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Magnetic Materials

GMR Harddisk, courtesy IBM GermanyMagnetic phenomena are omnipresent in the modern world. The Nobel prize in Physics (2007) was awarded for studies of giant magnetoresistance to A. Fert and P. Grünberg; their discoveries were soon implemented in hard drives (see picture, courtesy of IBM Germany). Learn more about the current research into magnetic materials, basic or applied.

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Recent Articles

Effect of the Functionalization Process on the Colloidal, Magnetic Resonance Imaging, and Bioelimination Properties of Mono- or Bisphosphonate-Anchored Dendronized Iron Oxide Nanoparticles

Effect of the Functionalization Process on the Colloidal, Magnetic Resonance Imaging, and Bioelimination Properties of Mono‐ or Bisphosphonate‐Anchored Dendronized Iron Oxide Nanoparticles

Bioelimination of MRI contrast agents: The effect of the number of anchoring agents and of the grafting process on the anchoring strength and colloidal, magnetic properties, cell internalization, bioelimination, and in vitro and in vivo magnetic resonance imaging properties of dendronized iron oxide nanoparticles are examined (see picture).

[Full Paper]
Aurélie Walter, Antonio Garofalo, Pauline Bonazza, Florent Meyer, Hervé Martinez, Solenne Fleutot, Claire Billotey, Jacqueline Taleb, Delphine Felder-Flesch, Sylvie Begin-Colin
ChemPlusChem, April 20, 2017, https://doi.org/10.1002/cplu.201700049 Read article

Structural, Photophysical, and Magnetic Circular Dichroism Studies of Three Rigidified meso-Pentafluorophenyl-Substituted Hexaphyrin Analogues

Structural, Photophysical, and Magnetic Circular Dichroism Studies of Three Rigidified meso‐Pentafluorophenyl‐Substituted Hexaphyrin Analogues

Protonation was explored as a means of altering the inherent electronic states of three congeneric expanded porphyrinoids, specifically three rigidified hexaphyrin analogues possessing different numbers of meso-carbon linkages. As inferred from a suite of spectroscopic studies, only the [24]rosarin, but not its analogues [24]amethyrin or [26]rubyrin, proved redox active under conditions of simple protonation (see figure).

[Full Paper]
Masatoshi Ishida, Taniyuki Furuyama, Jong Min Lim, Sangsu Lee, Zhan Zhang, Sudip K. Ghosh, Vincent M. Lynch, Chang-Hee Lee, Nagao Kobayashi, Dongho Kim, Jonathan L. Sessler
Chem. Eur. J., April 20, 2017, https://doi.org/10.1002/chem.201700759 Read article

Solvent-Controlled Phase Transition of a CoII-Organic Framework: From Achiral to Chiral and Two to Three Dimensions

Solvent‐Controlled Phase Transition of a CoII‐Organic Framework: From Achiral to Chiral and Two to Three Dimensions

Phase Transition Switch: A dynamic metal-organic framework, comprised of square-grid layers, is shown to undergo (a) methanol ordering, inducing chirality, which is absent upon desolvation or replacement by bulkier ethanol, and (b) 2D to 3D transformation from five-coordinated cobalt to octahedral through an astounding 0.3 Å motion between neighboring layers.

[Full Paper]
Xing-Po Wang, Wen-Miao Chen, Hao Qi, Xiao-Yi Li, Cyril Rajnák, Zhen-Yu Feng, Mohamedally Kurmoo, Roman Boča, Chun-Jiang Jia, Chen-Ho Tung, Di Sun
Chem. Eur. J., April 20, 2017, https://doi.org/10.1002/chem.201700474 Read article

Preparation of a Nanobiocatalyst by Efficiently Immobilizing Aspergillus niger Lipase onto Magnetic Metal–Biomolecule Frameworks (BioMOF)

Preparation of a Nanobiocatalyst by Efficiently Immobilizing Aspergillus niger Lipase onto Magnetic Metal–Biomolecule Frameworks (BioMOF)

Go Fish! Aspergillus niger lipase immobilized onto magnetic iron oxide nanoparticles exhibits high catalytic performance, a wide pH and temperature adaptability, and superior stabilities and solvent tolerance to those of the free counterpart. It can be easily recovered simply by using a magnet.

[Full Paper]
Gao-Hui Xia, Shi-Lin Cao, Pei Xu, Xue-Hui Li, Jian Zhou, Min-Hua Zong, Wen-Yong Lou
ChemCatChem, April 20, 2017, https://doi.org/10.1002/cctc.201700070 Read article

Structural and Magnetic Characterization of Two Tetranuclear Cu(II) Complexes with Closed-Cubane-Like Core Framework

Structural and Magnetic Characterization of Two Tetranuclear Cu(II) Complexes with Closed‐Cubane‐Like Core Framework

Two novel tetranuclear closed-cubane like core framework Cu(II) complexes were synthesized, and characterized by crystal structure and magnetic analysis. Magnetic susceptibility measurements indicate an overall weak antiferromagnetic exchange coupling in one compound, while ferromagnetic exchange coupling in another compound. Observed magnetic properties of the complexes corroborate with their structural arrangement.

[Full Paper]
Subal Chandra Manna, Soumen Manna, Aparup Paul, Ennio Zangrando, Albert Figuerola, Samar Dolai, Kalipada Das
ChemistrySelect, April 19, 2017, https://doi.org/10.1002/slct.201700669 Read article

(BEDT-TTF)2Cu2(HCOO)5: An Organic–Inorganic Hybrid Conducting Magnet

(BEDT‐TTF)2Cu2(HCOO)5: An Organic–Inorganic Hybrid Conducting Magnet

Code of conduct: An organic–inorganic hybrid (BEDT-TTF)2Cu2 (HCOO)5 composed of a θ-BEDT-TTF+05 layer and square lattice anionic sheet [Cu2(HCOO)5-]n is synthesized. The crystal shows long-range magnetic ordering at 8.0 K and is semiconducting with σrt=0.1 S cm. Thus, an antiferromagnetic square lattice is introduced into a molecular crystal.

[Communication]
Bin Zhang, Yan Zhang, Zheming Wang, Zengqiang Gao, Deliang Yang, Dongwei Wang, Yanjun Guo, Daoben Zhu
ChemistryOpen, April 19, 2017, https://doi.org/10.1002/open.201700041 Read article

Optical and Magnetic Properties of Fe Nanoparticles Fabricated by Femtosecond Laser Ablation in Organic and Inorganic Solvents

Optical and Magnetic Properties of Fe Nanoparticles Fabricated by Femtosecond Laser Ablation in Organic and Inorganic Solvents

Magnetic nanoparticles: Iron nanoparticles are synthesized by femtosecond laser ablation in different liquid media, and their optical, structural, and magnetic properties are studied. Under certain experimental conditions, submicrometer-sized iron oxide nanoparticles agglomerate in fractal patterns with self-similar properties. Nanoscale self-assembled annular structures are also observed.

[Article]
Jesica M. J. Santillán, David Muñetón Arboleda, Diego F. Coral, Marcela B. Fernández van Raap, Diego Muraca, Daniel C. Schinca, Lucía B. Scaffardi
ChemPhysChem, April 19, 2017, https://doi.org/10.1002/cphc.201601279 Read article

Linear, Trinuclear Cobalt Complexes with o-Phenylene-bis-Silylamido Ligands

Linear, Trinuclear Cobalt Complexes with o‐Phenylene‐bis‐Silylamido Ligands

All your cobalts in a row: Combined experimental and computational studies on the unprecedented linear trinuclear complex [{CoterN(SiMe3)2(μ-η-[o-C6H4(κNSiiPr3)2])}2Coint] (1), easily obtained by partial aminolysis of [Co{N(SiMe3)2}2]2 with C6H4(NHSiiPr3)2, establish intermetallic ferromagnetic interactions between the CoII centres (see figure); 1 is the first single-molecule magnet at zero applied field with a linear arrangement of the paramagnetic centres. A centrosymmetric Fe complex analogous to 1, was also obtained.

[Communication]
Kirill Yu. Monakhov, Jan van Leusen, Paul Kögerler, Emilie-Laure Zins, M. Esmaïl Alikhani, Moniek Tromp, Andreas A. Danopoulos, Pierre Braunstein
Chem. Eur. J., April 19, 2017, https://doi.org/10.1002/chem.201700496 Read article

Organization of Copper Azide Clusters into Two-Dimensional Structures: Synthesis, Structure, and Magnetic Properties

Organization of Copper Azide Clusters into Two‐Dimensional Structures: Synthesis, Structure, and Magnetic Properties

Three new compounds containing CuII atoms, azides, and aliphatic amines have been synthesized and characterized. Magnetic studies indicate that they are metamagnetic in nature.

[Full Paper]
Subhradeep Mistry, Subramanian Yashonath, Srinivasan Natarajan
Eur. J. Inorg. Chem., April 18, 2017, https://doi.org/10.1002/ejic.201601519 Read article

Cooperative Magnetism in Crystalline N-Aryl-Substituted Verdazyl Radicals: First-Principles Predictions and Experimental Results

Cooperative Magnetism in Crystalline N‐Aryl‐Substituted Verdazyl Radicals: First‐Principles Predictions and Experimental Results

Cooperative magnetic effects: The preparation of a series of eight tert-butyl-substituted 1,5-diaryl-6-oxo verdazyl radicals and the characterization of the magnetic susceptibilities are presented. Quantum chemical calculations revealed different complex magnetic networks including ferromagnetic and antiferromagnetic one- and two-dimensional networks. This study highlights the relationship between crystal structure and magnetic properties.

[Full Paper]
Steffen Eusterwiemann, Thomas Dresselhaus, Carsten Doerenkamp, Oliver Janka, Oliver Niehaus, Anja Massolle, Constantin G. Daniliuc, Hellmut Eckert, Rainer Pöttgen, Johannes Neugebauer, Armido Studer
Chem. Eur. J., April 18, 2017, https://doi.org/10.1002/chem.201700988 Read article

Unidirectional Wetting Properties on Multi-Bioinspired Magnetocontrollable Slippery Microcilia

Unidirectional Wetting Properties on Multi‐Bioinspired Magnetocontrollable Slippery Microcilia

Three natural inspirations, i.e., butterfly wings, pitcher plants, and microcilia, are integrated into a surface to design multifunctional interface materials. Based on this multi-bioinspiration, a microcilia surface lubricated by silicone oil is prepared that achieves unidirectional wetting behavior with magnetocontrollability.

[Communication]
Moyuan Cao, Xu Jin, Yun Peng, Cunming Yu, Kan Li, Kesong Liu, Lei Jiang
Adv. Mater., April 12, 2017, https://doi.org/10.1002/adma.201606869 Read article

Carboxylated Polysaccharides Decorated with Ultrasmall Magnetic Nanoparticles with Antibacterial and MRI Properties

Carboxylated Polysaccharides Decorated with Ultrasmall Magnetic Nanoparticles with Antibacterial and MRI Properties

Two (2,2,6,6-tetramethylpiperidine-1-yl)-oxyl radical-oxidized polysaccharides (cellulose and pullulan) are efficient matrixes for the in situ iron oxide nanoparticles fabrication. The results show that the two used polysaccharides are excellent materials to produce highly uniform shaped nanoparticles with an average size of about 3 nm. The magnetic nanoparticles also exhibit specific features as contrasting agent for noninvasive cellular and molecular imaging.

[Full Paper]
Gabriela Biliuta, Liviu Sacarescu, Vlad Socoliuc, Mihai Iacob, Liliana Gheorghe, Dragos Negru, Sergiu Coseri
Macromol. Chem. Phys., April 11, 2017, https://doi.org/10.1002/macp.201700062 Read article

Silica-Based Nanoparticles as Bifunctional and Bimodal Imaging Contrast Agents

Silica‐Based Nanoparticles as Bifunctional and Bimodal Imaging Contrast Agents

Dual action: Bifunctional and bimodal nanoparticles (NPs) based on silica NPs that incorporate ruthenium complex and grafted with gadolinium complex (see figure) have been developed for potential use as a bimodal probe (luminescence/magnetic resonance imaging) and theranostic agent (photodynamic therapy/imaging). The biological potential of these NPs has been studied on HCT-116 cells and microscopy and cytotoxicity results are given.

[Full Paper]
Séverine Lechevallier, Robert Mauricot, Hélène Gros-Dagnac, Sylviane Chevreux, Gilles Lemercier, Erick Phonesouk, Muriel Golzio, Marc Verelst
ChemPlusChem, April 11, 2017, https://doi.org/10.1002/cplu.201700078 Read article

Utilizing Iron's Attractive Chemical and Magnetic Properties in Microrocket Design, Extended Motion, and Unique Performance

Utilizing Iron's Attractive Chemical and Magnetic Properties in Microrocket Design, Extended Motion, and Unique Performance

“All-in-one” iron-based microrockets with efficient propulsion in acid, extended lifetime, facile magnetic guidance, heavy-cargo pickup and release, and self-assembly capability are demonstrated. Leveraging the intrinsic biocompatibility of iron with its multipurpose role in the microrocket design represents an important step toward wider in vivo use of micromotors.

[Full Paper]
Emil Karshalev, Chuanrui Chen, Gregor Marolt, Aída Martín, Isaac Campos, Roxanne Castillo, Tianlong Wu, Joseph Wang
Small, April 10, 2017, https://doi.org/10.1002/smll.201700035 Read article

Magnetocaloric Materials with Multiple Instabilities

Magnetocaloric Materials with Multiple Instabilities

The magnetocaloric effect is a phenomenon where the temperature of a magnetic material varies upon application or removal of a magnetic field. Several attempts to enhance the magnetocaloric effect are reviewed from the viewpoint of the competition or cooperation between the ferromagnetic interaction and other magnetic, electronic, and structural instabilities in strongly correlated materials.

[Research News]
Yasujiro Taguchi, Hideaki Sakai, Debraj Choudhury
Adv. Mater., April 07, 2017, https://doi.org/10.1002/adma.201606144 Read article

Polyphenol-Inspired Facile Construction of Smart Assemblies for ATP- and pH-Responsive Tumor MR/Optical Imaging and Photothermal Therapy

Polyphenol‐Inspired Facile Construction of Smart Assemblies for ATP‐ and pH‐Responsive Tumor MR/Optical Imaging and Photothermal Therapy

Smart magnetic assemblies featured with adenosine-triphosphate-responsive and pH-facilitated disassembly capabilities are facilely constructed based on polyphenol-inspired self-assembly of nanoparticles. Endowed with remarkable change of the transverse relaxivity and potent “turn-on” of fluorescence after the disassembly, the assemblies are employed for effective tumor magnetic resonance and fluorescence dual-modal imaging and photothermal therapy.

[Full Paper]
Xiao-Rong Song, Shi-Hua Li, Jiayong Dai, Liang Song, Guoming Huang, Ruhui Lin, Juan Li, Gang Liu, Huang-Hao Yang
Small, April 06, 2017, https://doi.org/10.1002/smll.201603997 Read article

Syntheses, Structures, and Properties of Two Coordination Complexes of a Flexible Ligand with Channel Structure

Syntheses, Structures, and Properties of Two Coordination Complexes of a Flexible Ligand with Channel Structure

[Article]
Tian Shi, Ya-Guang Chen
Z. Anorg. Allg. Chem., April 05, 2017, https://doi.org/10.1002/zaac.201700053 Read article

Uniaxial pressure induced compensated half metal in Cr-substituted iron(II) fluoride

Uniaxial pressure induced compensated half metal in Cr‐substituted iron(II) fluoride

A new fluoride (Fe0.5Cr0.5F2) is artificially designed via substituting half Fe with Cr in FeF2. The parent compound FeF2 is an antiferromagnetic insulator. An insulator to half metal transition is turned on by the uniaxial pressure of 2.02 GPa and a compensated half metal with high magnetic ordering temperature is fabricated.

[Rapid Research Letter]
Jing Wang, Lijing Zhai, Yuan Gao, Zhiping Li, Yuanhui Xu, Xianfeng Hao, Faming Gao
Phys. Status Solidi RRL, April 05, 2017, https://doi.org/10.1002/pssr.201700052 Read article

Characterizing Physical Properties of Superparamagnetic Nanoparticles in Liquid Phase Using Brownian Relaxation

Characterizing Physical Properties of Superparamagnetic Nanoparticles in Liquid Phase Using Brownian Relaxation

A search-coil-based method is successfully applied to characterize intrinsic properties in superparamagnetic nanoparticles such as saturation magnetization, average hydrodynamic size, dominating relaxation process, and to distinguish between single- and multicore beads. This system and method can be used as building blocks in nanoparticle characterization devices.

[Full Paper]
Kai Wu, Karl Schliep, Xiaowei Zhang, Jinming Liu, Bin Ma, Jian-Ping Wang
Small, April 04, 2017, https://doi.org/10.1002/smll.201604135 Read article

Spherical Polyelectrolyte Brushes as a Novel Platform for Paramagnetic Relaxation Enhancement and Passive Tumor Targeting

Spherical Polyelectrolyte Brushes as a Novel Platform for Paramagnetic Relaxation Enhancement and Passive Tumor Targeting

A novel platform for the development of highly efficient magnetic resonance imaging (MRI) contrast agents is demonstrated, by electrostatic self-assembly of cationic Gd complexes on spherical polyelectrolyte brushes. Both in vitro and in vivo experiments indicate excellent performance. It not only broadens the horizons of new MRI contrast agents, but also has a great potential for tumor diagnosis.

[Communication]
Qin Zhu, Zhenyu Yuan, Weiqiao Qian, Yuanyuan Li, Zhiqiang Qiu, Weijun Tang, Jie Wang, Yun Ding, Aiguo Hu
Adv. Healthcare Mater., April 03, 2017, https://doi.org/10.1002/adhm.201700071 Read article

Quantified Binding Scale of Competing Ligands at the Surface of Gold Nanoparticles: The Role of Entropy and Intermolecular Forces

Quantified Binding Scale of Competing Ligands at the Surface of Gold Nanoparticles: The Role of Entropy and Intermolecular Forces

Quantitative assessment by NMR of the surface composition of gold nanoparticles capped by competing thiol ligands unravels the relationship between the compositions of the ligand shell and the reaction medium. The combination with DFT calculations unveils the role of intermolecular forces and entropy on the stability of mixed ligand shells, toward further control of multifunctionality in hybrid nanoparticles.

[Full Paper]
Claire Goldmann, François Ribot, Leonardo F. Peiretti, Paola Quaino, Frederik Tielens, Clément Sanchez, Corinne Chanéac, David Portehault
Small, March 31, 2017, https://doi.org/10.1002/smll.201604028 Read article

Origin of Capacity Increasing in a Long-Life Ternary Sn–Fe3O4@Graphite Anode for Li-Ion Batteries

Origin of Capacity Increasing in a Long‐Life Ternary Sn–Fe3O4@Graphite Anode for Li‐Ion Batteries

The origin of the capacity increasing is verified by a long-life Sn–Fe3O4@graphite composite anode, demonstrating that the capacity increasing comes from the partial reversible formation and dissolution of growing solid electrolyte interphase on the surface of active materials. This process causes the Li+ irreversible consuming, but also favors the kinetics of the ternary composite anode in the battery system.

[Full Paper]
Hanyin Zhang, Renzong Hu, Yuxuan Liu, Jiangwen Liu, Zhongchen Lu, Min Zhu
Adv. Mater. Interfaces, March 31, 2017, https://doi.org/10.1002/admi.201700113 Read article

Route towards Dirac and Weyl antiferromagnetic spintronics

Route towards Dirac and Weyl antiferromagnetic spintronics

Topological magnets are excellent candidates for the next era in topological matter and spintronics. In this review, Ŝmejkal et al. show the new role that antiferromagnets have taken in combining topology with spintronics. The authors illustrate the unique antiferromagnetic symmetries allowing for combining seemingly incompatible effects such as the Néel spin-orbit torques and topological Dirac quasiparticles, or the anomalous Hall effect in noncollinear antiferromagnets.

[Review]
Libor Šmejkal, Tomáš Jungwirth, Jairo Sinova
Phys. Status Solidi RRL, March 29, 2017, https://doi.org/10.1002/pssr.201700044 Read article

Graphene Quantum Dot Modified Fe3O4 Nanoparticles Stabilize PdCu Nanoparticles for Enhanced Catalytic Activity in the Sonogashira Reaction

Graphene Quantum Dot Modified Fe3O4 Nanoparticles Stabilize PdCu Nanoparticles for Enhanced Catalytic Activity in the Sonogashira Reaction

Going dotty: Fe3O4 nanoparticles modified with graphene quantum dots (GQD) are used for the stabilization of PdCu bimetallic nanoparticles. This material is applied as an efficient catalyst for the Sonogashira reaction of aryl iodides, bromides, and chlorides in toluene or N,N-dimethylacetamide at 60–110 °C in very high yields with 0.3 mol % of Pd loading.

[Full Paper]
Mohammad Gholinejad, Jahantab Ahmadi, Carmen Nájera, Mohammad Seyedhamzeh, Fatemeh Zareh, Mohsen Kompany-Zareh
ChemCatChem, March 24, 2017, https://doi.org/10.1002/cctc.201601519 Read article

Remote Control of Cellular Functions: The Role of Smart Nanomaterials in the Medicine of the Future

Remote Control of Cellular Functions: The Role of Smart Nanomaterials in the Medicine of the Future

Smart nanoparticles are exploited for remote cell stimulation. The most recent and exciting findings about the main classes of active nanoparticles, which allow for a “wireless” activation and modulation of cell activities, are summarized in this Progress Report.

[Progress Report]
Giada Graziana Genchi, Attilio Marino, Agostina Grillone, Ilaria Pezzini, Gianni Ciofani
Adv. Healthcare Mater., March 24, 2017, https://doi.org/10.1002/adhm.201700002 Read article

A Density Functional Theory Investigation of Nin, Pdn, and Ptn Clusters (n=1–4) Adsorbed on Buckminsterfullerene

A Density Functional Theory Investigation of Nin, Pdn, and Ptn Clusters (n=1–4) Adsorbed on Buckminsterfullerene

Clusters on Bucky balls: How Ni, Pd, and Pt clusters adsorb on C60 is examined by using a computational approach. The calculations show that the base structure of C60 can host Nin/Pdn/Ptn (n=1–4) clusters with good adsorption stability and the complexes establish either two or no unpaired electrons. The binding energy of Pd and Pt clusters increases as the number of metal atom increases, which implies that the coverage of C60 with Pd or Pt preferentially establishes a large-size metal cluster.

[Article]
Nguyet N. T. Pham, Hung M. Le
ChemPhysChem, March 14, 2017, https://doi.org/10.1002/cphc.201601374 Read article

Synthesis, Crystal Structure, and Magnetic Properties of Pyrochlore-Type Eu2Ta2(O,N)7+δ

Synthesis, Crystal Structure, and Magnetic Properties of Pyrochlore‐Type Eu2Ta2(O,N)7+δ

[Article]
Björn Anke, Sophie Hund, Christian Lorent, Oliver Janka, Theresa Block, Rainer Pöttgen, Martin Lerch
Z. Anorg. Allg. Chem., March 13, 2017, https://doi.org/10.1002/zaac.201700024 Read article

Room temperature ferromagnetic-like response in “bulk” Y-doped CeO2

Room temperature ferromagnetic‐like response in “bulk” Y‐doped CeO2

Bulk (∼600 nm) crystallites of heavily Y-doped CeO2 display remarkable ferromagnetic-like response at room temperature. This response can be linked to the formation of defect-lined nanodomain interfaces in the interior of heavily doped crystals that result in the appearance of coherent mesoscopic domains with giant orbital paramagnetism.

[Rapid Research Letter]
R. M. Rakhmatullin, S. Sen
Phys. Status Solidi RRL, March 07, 2017, https://doi.org/10.1002/pssr.201700010 Read article

Synthesis of Magnetic Nanoparticles by Ultrashort Pulsed Laser Ablation of Iron in Different Liquids

Synthesis of Magnetic Nanoparticles by Ultrashort Pulsed Laser Ablation of Iron in Different Liquids

Which one reacts with iron? Femtosecond laser ablation of a pure iron plate in different solvents yields magnetic iron-based nanoparticles with clean surfaces. The structural and magnetic properties of the nanoparticles can be tuned by careful choice of the liquid environment, for example, for the generation iron oxides or carbides (see picture).

[Article]
Alexander Kanitz, Jan S. Hoppius, María del Mar Sanz, Marco Maicas, Andreas Ostendorf, Evgeny L. Gurevich
ChemPhysChem, March 06, 2017, https://doi.org/10.1002/cphc.201601252 Read article

Enhancing the Magnetic Heating Capacity of Iron Oxide Nanoparticles through Their Postproduction Incorporation into Iron Oxide–Gold Nanocomposites

Enhancing the Magnetic Heating Capacity of Iron Oxide Nanoparticles through Their Postproduction Incorporation into Iron Oxide–Gold Nanocomposites

The addition of gold nanoparticles in the postproduction treatment of iron oxide nanoparticles to form a nanocomposite material can improve the magnetic-heating properties of the iron oxide when it is subjected to an alternating magnetic field.

[Full Paper]
Gavin Bell, Lara K. Bogart, Paul Southern, Malini Olivo, Quentin A. Pankhurst, Ivan P. Parkin
Eur. J. Inorg. Chem., March 03, 2017, https://doi.org/10.1002/ejic.201601432 Read article

Charge Transfer Processes in OPV Materials as Revealed by EPR Spectroscopy

Charge Transfer Processes in OPV Materials as Revealed by EPR Spectroscopy

Light-induced EPR spectroscopy is ideally suited to study charge separated states in BHJ since it selectively probes the paramagnetic charge carriers and excited states. This review focusses on the application of advanced EPR techniques to characterize the electronic structure of positive and negative polarons as well as dynamics of spin-dependent charge separation and charge recombination processes in organic photovoltaic materials.

[Review]
Jens Niklas, Oleg G. Poluektov
Adv. Energy Mater., March 03, 2017, https://doi.org/10.1002/aenm.201602226 Read article

Controlling the Electrical and Magnetoelectric Properties of Epitaxially Strained Sr1−xBaxMnO3 Thin Films

Controlling the Electrical and Magnetoelectric Properties of Epitaxially Strained Sr1−xBaxMnO3 Thin Films

Modifying the structure of perovskite (Sr,Ba)MnO3 at will through Ba content and epitaxial strain gives rise to an accurate control of electrical and magnetoelectric functionalities. It is revealed to be decisive to tip the balance between the polar and nonpolar ground state, to tune the strength of magnetoelectric coupling, and to design the semiconductor band gap energy.

[Full Paper]
Eric Langenberg, Laura Maurel, Noelia Marcano, Roger Guzmán, Pavel Štrichovanec, Thomas Prokscha, César Magén, Pedro A. Algarabel, José A. Pardo
Adv. Mater. Interfaces, February 24, 2017, https://doi.org/10.1002/admi.201601040 Read article

Concepts of antiferromagnetic spintronics

Concepts of antiferromagnetic spintronics

[Review@RRL]
O. Gomonay, T. Jungwirth, J. Sinova
Phys. Status Solidi RRL, February 21, 2017, https://doi.org/10.1002/pssr.201700022 Read article

Investigation of exchange coupled bilayer Fe/CuMnAs by pump–probe experiment

Investigation of exchange coupled bilayer Fe/CuMnAs by pump–probe experiment

[Rapid Research Letter]
Vít Saidl, Petr Němec, Peter Wadley, Kevin W. Edmonds, Richard P. Campion, Vít Novák, Bryan L. Gallagher, František Trojánek, Tomáš Jungwirth
Phys. Status Solidi RRL, February 21, 2017, https://doi.org/10.1002/pssr.201600441 Read article

Topological spin Hall effect in antiferromagnetic skyrmions

Topological spin Hall effect in antiferromagnetic skyrmions

[Rapid Research Letter]
Patrick M. Buhl, Frank Freimuth, Stefan Blügel, Yuriy Mokrousov
Phys. Status Solidi RRL, February 17, 2017, https://doi.org/10.1002/pssr.201700007 Read article

Ultrasmall Yttrium Iron Garnet Nanoparticles with High Coercivity at Low Temperature Synthesized by Laser Ablation and Fragmentation of Pressed Powders

Ultrasmall Yttrium Iron Garnet Nanoparticles with High Coercivity at Low Temperature Synthesized by Laser Ablation and Fragmentation of Pressed Powders

Target density matters: The porosity of targets used in pulsed laser ablation in liquids (PLAL) is a crucial factor that has far-reaching implications on nanoparticle quality and productivity. The PLAL of pressed yttrium iron garnet (YIG) powders in water is studied and compared to the ablation of a single-crystal target to achieve YIG nanoparticles with sizes smaller than 3 nm and unexpected magnetic properties with huge coercive and irreversibility fields.

[Article]
Tim Schmitz, Ulf Wiedwald, Carsten Dubs, Bilal Gökce
ChemPhysChem, February 17, 2017, https://doi.org/10.1002/cphc.201601183 Read article

Manipulation of antiferromagnetic domain distribution in Mn2Au by ultrahigh magnetic fields and by strain

Manipulation of antiferromagnetic domain distribution in Mn2Au by ultrahigh magnetic fields and by strain

[Rapid Research Letter]
A. A. Sapozhnik, R. Abrudan, Yu. Skourski, M. Jourdan, H. Zabel, M. Kläui, H.-J. Elmers
Phys. Status Solidi RRL, February 10, 2017, https://doi.org/10.1002/pssr.201600438 Read article

Co-sputtered PtMnSb thin films and PtMnSb/Pt bilayers for spin–orbit torque investigations

Co‐sputtered PtMnSb thin films and PtMnSb/Pt bilayers for spin–orbit torque investigations

[Rapid Research Letter]
Jan Krieft, Johannes Mendil, Myriam H. Aguirre, Can O. Avci, Christoph Klewe, Karsten Rott, Jan-Michael Schmalhorst, Günter Reiss, Pietro Gambardella, Timo Kuschel
Phys. Status Solidi RRL, February 07, 2017, https://doi.org/10.1002/pssr.201600439 Read article

Spin Hall magnetoresistance in antiferromagnet/normal metal bilayers

Spin Hall magnetoresistance in antiferromagnet/normal metal bilayers

[Rapid Research Letter]
Aurélien Manchon
Phys. Status Solidi RRL, January 23, 2017, https://doi.org/10.1002/pssr.201600409 Read article

Laser Alloying of Co Nanorods and Al Nanoparticles in a Liquid

Laser Alloying of Co Nanorods and Al Nanoparticles in a Liquid

Co–Al nanoparticles are generated by laser exposure of a colloidal mixture of cobalt nanorods and aluminum spherical nanoparticles.

[Article]
Ekaterina V. Barmina, Ilya A. Sukhov, Guillaume Viau, Georgy A. Shafeev
ChemPhysChem, January 18, 2017, https://doi.org/10.1002/cphc.201601115 Read article

Field-free, spin-current control of magnetization in non-collinear chiral antiferromagnets

Field‐free, spin‐current control of magnetization in non‐collinear chiral antiferromagnets

[Rapid Research Letter]
Hiroyuki Fujita
phys. stat. sol. (RRL), December 14, 2016, https://doi.org/10.1002/pssr.201600360 Read article

Introducing Barium in Transition Metal Oxide Frameworks: Impact upon Superconductivity, Magnetism, Multiferroism and Oxygen Diffusion and Storage

Introducing Barium in Transition Metal Oxide Frameworks: Impact upon Superconductivity, Magnetism, Multiferroism and Oxygen Diffusion and Storage

Strongly correlated electron systems are observed for mixed valent transition metal oxide frameworks hosting alkaline earth and lanthanide cations. The introduction of barium in the cavities of the oxide framework allows generally an ordering with other cations due to its larger size. The specific affinity of barium with respect to oxygen allows the oxygen content, and consequently the electronic charge distribution to be tuned and favors oxygen and anionic vacancies ordering. These two specific characteristics allow best performances to be reached as well for the physical properties, such as superconductivity, magnetism or multiferroicity as for oxygen storage.

[Personal Account]
Bernard Raveau
Chem. Rec., November 25, 2016, https://doi.org/10.1002/tcr.201600119 Read article

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