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A systematic study of magnetocrystalline anisotropy is performed for R(La/Ce/Nd)2Fe14B tetragonal compound with the site substitution mechanism. Theoretical calculation suggests the 50% doping with Ce at 4f-site can lead to competitive…

Materials Science · Physics 2018-06-07 Rajiv K. Chouhan , Arjun K. Pathak , D. Paudyal , V. K. Pecharsky

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…

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…

Materials Science · Physics 2020-12-14 M. Blanco-Rey , J. I. Cerda , A. Arnau

By understanding the small easy axis magnetocrystalline anisotropy energy (MAE) of hexagonal Ce2Co17, an attempt has been made to improve anisotropy and consequently to obtain better characteristics for a high energy permanent magnet via…

Materials Science · Physics 2018-05-02 Manish K. Kashyap , Timothy A. Hackett , Ed Moxley , Sarvesh Kumar , D. Paudyal , B. N. Harmon

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…

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…

Materials Science · Physics 2024-11-22 Xunwu Hu , Dao-Xin Yao , Kun Cao

In this study, we considered a large set of materials that are closely related to orthorhombic Fe$_3$C (cementite) with the aim of characterizing trends in their intrinsic magnetic properties and identifying alloys that are optimal for…

Materials Science · Physics 2025-03-19 Justyn Snarski-Adamski , Mirosław Werwiński , Justyna Rychły-Gruszecka

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…

Due to its strong magnetocrystalline anisotropy, FePt L1$\mathrm{_0}$ phase is considered as a promising magnetic recording media material. Although the magnetic properties of this phase have already been analyzed many times using density…

Materials Science · Physics 2022-05-11 Joanna Marciniak , Wojciech Marciniak , Mirosław Werwiński

Using state-of-the-art first-principles calculations we study the magnetic behaviour of CeOFeAs. We find the Ce layer moments oriented perpendicular to those of the Fe layers. An analysis of incommensurate magnetic structures reveals that…

Superconductivity · Physics 2009-03-16 S. Sharma , S. Shallcross , J. K. Dewhurst , A. Sanna , C. Bersier , H. Glawe , E. K. U. Gross

A model of magnetic interactions in the ordered ferromagnetic FePt is proposed on the basis of first-principles calculations of non-collinear magnetic configurations and shown to be capable of explaining recent measurements of magnetic…

Fluid Dynamics · Physics 2015-06-26 O. N. Mryasov , U. Nowak , K. Y. Guslienko , R. W. Chantrell

In intercalated transition metal dichalcogenide $Fe_xTaS_2$ (0.2 $\leq$ x $\leq$ 0.4) single crystals, large magnetic anisotropy is observed. Transport property measurements indicate that heavy Fe-doping leads to a large anisotropy of…

Strongly Correlated Electrons · Physics 2017-05-10 G. Wu , B. L. Kang , Y. L. Li , T. Wu , N. Z. Wang , X. G. Luo , Z. Sun , L. J. Zou , X. H. Chen

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

A grand challenge in materials research is identifying the relationship between composition and performance. Herein, we explore this relationship for magnetic properties, specifically magnetic saturation (M$_s$) and magnetic anisotropy…

The mechanisms underlying the enhancement of magnetic anisotropies (MAs) of Sm ions, owing to valence electrons at the Sm site and the screened nuclear charges of ligands, are clarified using a detailed analysis of crystal fields (CF). In…

Materials Science · Physics 2022-01-12 Takuya Yoshioka , Hiroki Tsuchiura , Pavel Novák

The development of new-generation permanent magnets is based on experimental efforts and innovative theoretical tools for modeling magnetic properties. Magnetocrystalline anisotropy energy (MAE) - one of the main intrinsic properties of…

The magnetic moments and magnetic anisotropy energy (MAE) of CoRh alloy nanoparticles are determined experimentally and theoretically. Non-trivial correlations between chemical order, magnetic order and MAE are revealed. A remarkable…

Materials Science · Physics 2015-05-13 M. Muñoz-Navia , J. Dorantes-Dávila , D. Zitoun , C. Amiens , N. Jaouen , A. Rogalev , M. Respaud , G. M. Pastor

Dimers are the smallest chemical objects that show magnetic anisotropy. We focus on 3$d$ and 4$d$ transition metal dimers that have magnetic ground states in most cases. Some of these magnetic dimers have a considerable barrier against…

Atomic and Molecular Clusters · Physics 2008-04-09 Daniel Fritsch , Klaus Koepernik , Manuel Richter , Helmut Eschrig

To guide improved properties coincident with reduction of critical materials in permanent magnets, we investigate via density functional theory (DFT) the intrinsic magnetic properties of a promising system,…

Materials Science · Physics 2016-10-04 Liqin Ke , Duane D. Johnson

The Mn2Ge2Te6 shows intrinsic ferromagnetic (FM) order, with Curie temperature (Tc) of 316 K. The FM order origins from superexchange interaction between Mn and Te atoms. Mn2Ge2Te6 is half-metal (HM), and spin-\b{eta} electron is a…

Chemical Physics · Physics 2022-05-04 Ziyuan An , Ya Su , Shuang Ni , Zhaoyong Guan
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