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To investigate the magnetic properties of SmFe$_{12}$, we construct an effective spin model, where magnetic moments, crystal field (CF) parameters, and exchange fields at 0 K are determined by first principles. Finite temperature magnetic…

Materials Science · Physics 2020-12-02 Takuya Yoshioka , Hiroki Tsuchiura , Pavel Novák

We report magnetocrystalline anisotropy of pure and Fe/Si substituted SmCo5. The calculations were performed using the advanced density functional theory (DFT) including onsite electron-electron correlation and spin orbit coupling. Si…

Materials Science · Physics 2019-12-10 Rajiv K. Chouhan , A. K. Pathak , D. Paudyal

The magnetic compensation and magnetostriction properties in Fe doped CoCr2O4 samples have been investigated. Structural and magnetic measurements imply that the doped Fe3+ ions initially occupy the B1(Cr) sites when x<0.1, and then mainly…

Materials Science · Physics 2012-11-30 Hongguo Zhang , Wenghong Wang , Enke Liu , Xiaodan Tang , Guijiang Li , Hongwei Zhang , Guangheng Wu

The electronic structure and magnetic properties of pure and doped {Fe$_{16}$N$_2$} systems have been studied in the local-density (LDA) and quasiparticle self-consistent {\emph{GW}} approximations. The {\emph{GW}} magnetic moment of pure…

The effect of Fe substitution on Mn sites in the colossal magnetoresistive compounds La0.65Ca0.35Mn1-xFexO3 with 0.01<x<0.1 have been studied. A careful study in the magnetic properties has been carried out by the measurement of ac…

Strongly Correlated Electrons · Physics 2010-07-13 Wiqar Hussain Shah , S. K. Hasanain

To understand the effect of molecular environment on the electronic and magnetic properties of the single-molecule magnet (SMM) Mn$_{12}$, we explore two possible means for adding extra electrons to molecule. We explore both substitution of…

Materials Science · Physics 2009-11-10 Kyungwha Park , Mark R. Pederson

(Fe,Co)$_2$B-based compounds with specified 5$d$ substitutions are considered as promising materials for permanent magnets without rare-earth elements. We conducted a combined first-principles and experimental study focused on…

To investigate the structural and magnetic properties of Cr-doped M-type strontium hexaferrite (SrFe$_{12}$O$_{19}$) with x = (0.0, 0.5, 1.0), we perform first-principles total-energy calculations relied on density functional theory. Based…

Materials Science · Physics 2023-06-22 Binod Regmi , Dinesh Thapa , Bipin Lamichhane , Seong-Gon Kim

Magnetic cooling has the potential to replace conventional gas compression refrigeration. Materials such as La(Fe,Si)$_{13}$ exhibit a sizeable first-order magnetocaloric effect, and it is possible to tailor the phase transition towards…

We use first-principles total-energy calculations based on density functional theory to study the site occupancy and magnetic properties of Al-substituted $M$-type strontium hexaferrite SrFe$_{12-x}$Al$_{x}$O$_{19}$ with $x=0.5$ and…

Abundant phenomena in CoCr2-xMnxO4 (x = 0 ~ 2) samples such as magnetic compensation, magnetostriction and exchange bias effect have been observed and investigated in this work. A structure transition from cubic to tetragonal symmetry has…

Materials Science · Physics 2013-10-21 H. G. Zhang , W. H. Wang , E. K. Liu , X. D. Tang , G. J. Li , J. L. Chen , H. W. Zhang , G. H. Wu

Materials based on the Sm-Co system exhibit remarkable magnetic performance due to their high Curie temperature, large saturation magnetization, and strong magnetic anisotropy, which are the result of the electronic structure in Co and Sm…

Materials Science · Physics 2018-07-25 S. Y. Jekal , J. F. Loeffler , M. Charilaou

We have explored, computationally and experimentally, the magnetic properties of \fecob{} alloys. Calculations provide a good agreement with experiment in terms of the saturation magnetization and the magnetocrystalline anisotropy energy…

The percentage of substitutional doping of magnetic atoms (Mn) in group-IV-based dilute magnetic semiconductors (DMS) can be increased by co-doping with another conventional electronic dopant (e-dopant) [Zhu et al., Phys. Rev. Lett. 100,…

Materials Science · Physics 2009-06-04 Hua Chen , Wenguang Zhu , Efthimios Kaxiras , Zhenyu Zhang

95, 97Mo NMR experiments have been performed on a series of Sr2FeMoO6 and electron-doped Sr2-xLaxFeMoO6 ceramics. Detailed analysis of the NMR spectra from pristine Sr2FeMoO6 conclusively shows that the Mo hyperfine field is mainly due to…

Materials Science · Physics 2007-05-23 M. Wojcik , E. Jedryka , S. Nadolski , J. Navarro , D. Rubi , J. Fontcuberta

The Fe$_5$PB$_2$ compound offers tunable magnetic properties via the possibility of various combinations of substitutions on the Fe and P-sites. Here, we present a combined computational and experimental study of the magnetic properties of…

The effect of Ir substitution for Os in CeOs2Al10, with an unusually high Neel temperature of T~28.5K, has been studied by high-resolution neutron diffraction and magnetization measurements. A small amount of Ir (~ 8%) results in a…

Strongly Correlated Electrons · Physics 2015-06-16 D. D. Khalyavin , D. T. Adroja , P. Manuel , J. Kawabata , K. Umeo , T. Takabatake , A. M. Strydom

We have studied selected rare earth doped and transition metal doped CeFe2 compounds by examining their structural, magnetic and magneto-thermal properties. With substitution of Ce by 5 and 10% Gd and 10% Ho, the Curie temperature can be…

Strongly Correlated Electrons · Physics 2015-05-19 Arabinda Haldar , K. G. Suresh , A. K. Nigam

We investigate a large variation in a diagonal component of the linear magnetoelectric (ME) susceptibility in a polar ferrimagnet Mn2Mo3O8 while changing the magnetic-ion site from orbital-quenched Mn2+ to Fe2+ with strong uniaxial…

Strongly Correlated Electrons · Physics 2017-01-30 T. Kurumaji , S. Ishiwata , Y. Tokura

The present study focuses on the intrinsic properties of the SmFe10Co2-xVx (x = 0-2) alloys, which includes the SmFe10Co2 alloy, one of the most promising permanent magnets with the ThMn12 type of structure due to its large saturation…

Materials Science · Physics 2025-04-30 Diana Benea , Viorel Pop , Jan Minár
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