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Metals can be defined as materials with a Fermi surface or as materials exhibiting metallic conduction (i.e., $\mathrm{d} \rho / \mathrm{d}T > 0$). Usually, these definitions both hold at low temperatures, such as liquid-helium…

强关联电子 · 物理学 2023-04-14 Taichi Terashima , Hishiro T. Hirose , Naoki Kikugawa , Shinya Uji , David Graf , Hitoshi Sugawara

Thin ferromagnetic films with in-plane magnetic anisotropy are promising materials for obtaining high microwave permeability. The paper reports on the M\"ossbauer study of the field induced in-plane uniaxial anisotropy in electro-deposited…

材料科学 · 物理学 2011-09-22 Zhiwei Li , Xu Yang , Haibo Wang , Xin Liu , Fashen Li

The addition of transition metal elements can significantly modify physical properties of intermetalic compounds. We studied the influence of Molybdenum and Vanadium additives on thermal expansion coefficient (CTE) of Fe/sub 3/Al and FeAl…

材料科学 · 物理学 2007-05-23 Tatiana Seletskaia , Leonid Muratov , Bernard Cooper

The structural and magnetic properties of Fe$_{1-x}$Ni$_x$~($x$ = 0.32, 0.36, 0.40, 0.50) alloys have been investigated using synchrotron based x-ray diffraction (XRD) technique with x-rays of wavelength 0.63658 \AA\ down to 50 K…

Doping NiFe by heavy rare earth atoms alters the magnetic relaxation properties of this material drastically. We show that this effect can be well explained by the slow relaxing impurity mechanism. This process is a consequence of the…

材料科学 · 物理学 2015-05-13 G. Woltersdorf , M. Kiessling , G. Meyer , J. -U. Thiele , C. H. Back

Ferromagnetic Weyl semi-metals exhibit an anomalous Hall effect, a consequence of their topological properties. In the non-interacting case, the derivative of the orbital magnetization with respect to chemical potential is proportional to…

强关联电子 · 物理学 2019-04-05 S. Acheche , R. Nourafkan , A. -M. S. Tremblay

Monoclinic Y$_{0.7}$Er$_{0.3}$Fe$_2$D$_{4.2}$ compound exhibits unusual magnetic properties with different field induced magnetic transitions. The deuteride is ferrimagnetic at low temperature and the Er and Fe sublattices present magnetic…

材料科学 · 物理学 2023-05-05 Z. Arnold , O. Isnard , V. Paul-Boncour

The attainability of modification of the apparent magnetic anisotropy in (III,Mn)V ferromagnetic semiconductors is probed by means of the finite-elements-based modelling. The most representative case of (Ga,Mn)As and its in-plane uniaxial…

材料科学 · 物理学 2017-02-14 K. Dziatkowski , A. Twardowski

In this letter, the authors present a study of the energetics and magnetic interactions in Fe doped ZnO clusters by ab-initio density functional calculations. The results indicate that defects under suitable conditions can induce…

材料科学 · 物理学 2009-05-15 Nirmal Ganguli , Indra Dasgupta , Biplab Sanyal

The effect of Fe doping in the Mn site on the magnetic, transport and structural properties of polycrystalline La1/2Ca1/2MnO3 was studied. Doping with low Fe concentration (< 10%) strongly affects electrical transport and magnetization.…

材料科学 · 物理学 2016-08-31 P. Levy , L. Granja , E. Indelicato , D. Vega , G. Polla , F. Parisi

A series of Fe$_x$Rh$_{100-x}$ ($30 \leq x \leq 57$) films were epitaxially grown using magnetron sputtering, and were systematically studied by magnetization-, electrical resistivity-, and Hall resistivity measurements. After optimizing…

Gilbert damping is a key property governing magnetization dynamics in ordered magnets. We present a theoretical study of intrinsic Gilbert damping induced by magnon decay in antiferromagnetic metals through $s$-$d$ exchange interaction. Our…

介观与纳米尺度物理 · 物理学 2020-01-15 Haakon T. Simensen , Akashdeep Kamra , Roberto E. Troncoso , Arne Brataas

We performed a systematic study on the properties of CeFeAs$_{1-x}$P$_{x}$O ($0\leq x\leq 1$) by electrical resistivity, magnetization and specific heat measurements. The c-axis lattice constant decreases significantly with increasing P…

强关联电子 · 物理学 2010-04-27 Yongkang Luo , Yuke Li , Shuai Jiang , Jianhui Dai , Guanghan Cao , Zhuan Xu

In this work we propose a method for the structural relaxation of magnetic materials in the paramagnetic regime, in an adiabatic fast-magnetism approximation within the disordered local moment (DLM) picture in the framework of density…

材料科学 · 物理学 2018-09-12 Davide Gambino , Björn Alling

First-principles calculations are used to gauge different levels of approximation to calculate the magnetocrystalline anisotropy energies (MAE) of five $L1_0$ FeMe alloys (Me=Co, Cu, Pd, Pt, Au). We find that a second-order perturbation…

材料科学 · 物理学 2020-12-14 M. Blanco-Rey , J. I. Cerda , A. Arnau

Controlling magnetic anisotropy energy (MAE) in two-dimensional (2D) ferromagnetic materials is crucial for designing novel spintronic devices. Using first-principles calculations, we systematically investigate the magnetic properties of…

材料科学 · 物理学 2024-11-22 Xunwu Hu , Dao-Xin Yao , Kun Cao

The electrical resistivity, magnetization, and Hall effect in Co$_2$FeZ (Z = Al, Si, Ga, Ge, Sn, Sb) ferromagnetic Heusler alloys are studied. A number of correlations between the electronic and magnetic characteristics of the studied…

材料科学 · 物理学 2025-02-19 Yu. A. Perevozchikova , V. Yu. Irkhin , A. A. Semiannikova , V. V. Marchenkov

The electronic structures of Fe-doped III-V semiconductors were studied by first-principles supercell calculation. It was found that their electronic structures are basically the same as those of Mn-doped ones except that the extra electron…

强关联电子 · 物理学 2019-11-11 Shoya Sakamoto , Atsushi Fujimori

The Invar effect in ferromagnetic Fe-Ni, Fe-Pt, and Fe-Pd alloys is investigated theoretically by means of a computationally efficient scheme. The procedure can be divided into two stages: study of magnetism and calculations of structural…

材料科学 · 物理学 2012-08-15 F. Liot , C. A. Hooley

An ab initio scheme based on the Kubo-Greenwood linear response theory of exchange torque correlation is presented to calculate intrinsic Gilbert damping parameters in magnets of reduced dimensions. The method implemented into the…

材料科学 · 物理学 2025-07-01 Balázs Nagyfalusi , László Szunyogh , Krisztián Palotás