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Cobalt ferrite (CoFe$_2$O$_4$) is a prototypical ferrimagnetic spinel oxide whose exceptional magnetic anisotropy, magnetoelastic coupling, and thermal stability underpin applications in spintronics, magnetic hyperthermia, energy…

材料科学 · 物理学 2026-05-05 Soham Chandra , Soumyajit Sarkar

The study investigates the manipulation of the magnetic anisotropy in a thick (1 $\mu$m) Ni$_{90}$Fe$_{10}$ layer electrodeposited on a ferroelectric BaTiO$_3$(001) substrate, using a combination of Magneto-optical Kerr Effect,…

The nature of low-impurity ferromagnetism remains a challenging problem in the solid-state community due to the strong dependence of magnetic properties on composition, concentration, and structural geometry of diluted alloys. To address…

Analytical expressions for the magnetoelastic anisotropy constants of cubic magnetic systems are derived for rectangular and oblique distortions originating from epitaxial growth on substrates with lower crystal symmetry. In particular, the…

材料科学 · 物理学 2008-11-14 C. A. F. Vaz

Pronounced anisotropy of magnetic properties and complex magnetic order of a new oxi-halide compound Co7(TeO3)4Br6 has been investigated by powder and single crystal neutron diffraction, magnetization and ac susceptibility techniques.…

材料科学 · 物理学 2013-05-29 M. Prester , I. Zivkovic , O. Zaharko , D. Pajic , P. Tregenna-Piggott , H. Berger

From a systematic study of the electrical resistivity $\rho(T,H)$, magnetic susceptibility $\chi(T,H)$, isothermal magnetization $M(H)$ and the specific heat $C(T,H)$, a temperature-magnetic field ($T$-$H$) phase diagram has been…

强关联电子 · 物理学 2015-03-04 T. Shang , Y. H. Chen , F. Ronning , N. Cornell , J. D. Thompson , A. Zakhidov , M. B. Salamon , H. Q. Yuan

On the basis of a first-principles, relativistic electronic structure theory of finite temperature metallic magnetism, we investigate the variation of magnetic anisotropy, K, with magnetisation, M, in metallic ferromagnets. We apply the…

材料科学 · 物理学 2009-11-10 J. B. Staunton , S. Ostanin , S. S. A. Razee , B. L. Gyorffy , L. Szunyogh , B. Ginatempo , Ezio Bruno

Understanding the magnetoresistance (MR) of a magnetic material forms the basis for uncovering the orbital mechanisms and charge-spin interactions in the system. Although the parent state of iron-based high-temperature superconductors,…

Magnetic anisotropies of Co-implanted ZnO (0001) films grown on single-crystalline Al2O3 (11-20) substrates have been studied by ferromagnetic resonance (FMR) technique for different cobalt implantation doses. The FMR data show that the…

介观与纳米尺度物理 · 物理学 2010-04-27 Numan Akdogan , Bulat Rameev , Sumeyra Guler , Osman Ozturk , Bekir Aktas , Hartmut Zabel , Rustam Khaibullin , Lenar Tagirov

High-quality single crystals of CoTiO$_3$ are grown and used to elucidate in detail structural and magnetostructural effects by means of high-resolution capacitance dilatometry studies in fields up to 15 T which are complemented by specific…

强关联电子 · 物理学 2021-07-19 M. Hoffmann , K. Dey , J. Werner , R. Bag , J. Kaiser , H. Wadepohl , Y. Skourski , M. Abdel-Hafiez , S. Singh , R. Klingeler

Magnetic axis rotation (MAR) in ferromagnetic (FM) layers is crucial for strain-mediated converse magnetoelectric coupling. Employing the density functional theory (DFT), we computationally study the magnetic anisotropy of selected deformed…

材料科学 · 物理学 2022-12-02 Zefeng Cai , Ben Xu

Using the Kubo-Greenwood formalism the resistivity anisotropy for electron doped Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$, hole doped (Ba$_{1-x}$K$_x$)Fe$_2$As$_2$ and isovalently doped Ba(Fe$_{1-x}$Ru$_x$)$_2$As$_2$ in their antiferromagnetic state…

超导电性 · 物理学 2016-08-30 Gerald Derondeau , Ján Minár , Sebastian Wimmer , Hubert Ebert

We report the magnetostrictive length changes of CoTiO$_3$ studied by means of high-resolution dilatometry in magnetic fields ($B$) up to 15~T. In the long-range antiferromagnetically ordered phase below $T_N$ = 38~K, the easy-plane type…

强关联电子 · 物理学 2021-09-27 K. Dey , M. Hoffmann , R. Klingeler

Artificial multiferroics consist of two types of ferroic materials, typically a ferroelectric and ferromagnet, often coupled interfacially by magnetostriction induced by the lattice elongations in the ferroelectric. In BaTiO3 the magnitude…

We have studied the magnetic behavior of dextran-coated magnetite (Fe$_3$O$_4$) nanoparticles with median particle size $\left<d\right>=8$ $nm$. Magnetization curves and in-field M\"ossbauer spectroscopy measurements showed that the…

材料科学 · 物理学 2007-05-23 E. Lima , A. L. Brandl , A. D. Arelaro , G. F. Goya

By studying coupled ferro- (FM) and antiferromagnetic (AFM) thin film systems, we obtain an in-plane magnetic reorientation as a function of temperature and FM film thickness. The interlayer exchange coupling causes a uniaxial anisotropy,…

统计力学 · 物理学 2009-11-10 P. J. Jensen , H. Dreysse

Theoretical predictions of the magnetic anisotropy of antiferromagnetic materials are demanding due to a lack of experimental techniques which are capable of a direct measurement of this quantity. At the same time it is highly significant…

其他凝聚态物理 · 物理学 2009-11-13 L. Szunyogh , B. Lazarovits , L. Udvardi , J. Jackson , U. Nowak

Rare-earth (RE) compounds have been of enormous interest in condensed matter physics as a platform for the exploration of interesting physical phenomena. Here, we report the successful single crystal growth of HoB$_{2}$, which exhibits a…

强关联电子 · 物理学 2025-07-24 Takafumi D. Yamamoto , Hiroyuki Takeya , Kensei Terashima , Akiko T. Saito , Yoshihiko Takano

The phase diagram of the quasi two-dimensional antiferromagnet BaNi$_{2}$V$_{2}$O$_{8}$ is studied by specific heat, thermal expansion, magnetostriction, and magnetization for magnetic fields applied perpendicular to $\mathbf{c}$. At…

强关联电子 · 物理学 2007-09-28 W. Knafo , C. Meingast , K. Grube , S. Drobnik , P. Popovich , P. Schweiss , P. Adelmann , Th. Wolf , H. V. Löhneysen

Features of low dimensional magnetism resulting from a square-net arrangement of Co atoms in trirutile CoTa$_2$O$_6$ is studied in the present work by means of density functional theory and is compared with the experimental results of…

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