Tunable dimensional crossover and magnetocrystalline anisotropy in Fe2P -based alloys

Zhuravlev, I. A.; Antropov, V. P.; Vishina, A.; van Schilfgaarde, M.; Belashchenko, K. D.

doi:10.1103/PhysRevMaterials.1.051401

Tunable dimensional crossover and magnetocrystalline anisotropy in ${Fe}_{2} P$ -based alloys

Journal Article · Sun Oct 01 00:00:00 EDT 2017 · Physical Review Materials

DOI:https://doi.org/10.1103/PhysRevMaterials.1.051401· OSTI ID:1415797

Zhuravlev, I. A. ^[1]; Antropov, V. P. ^[2]; Vishina, A. ^[3]; van Schilfgaarde, M. ^[3]; Belashchenko, K. D. ^[1]

Univ. of Nebraska, Lincoln, NE (United States). Dept. of Physics and Astronomy, Nebraska Center for Materials and Nanoscience
Ames Lab., Ames, IA (United States)
Kings College, London (United Kingdom)

Electronic structure calculations are used to examine the magnetic properties of Fe₂P-based alloys and the mechanisms through which the Curie temperature and magnetocrystalline anisotropy can be optimized for specific applications. It is found that at elevated temperatures the magnetic interaction in pure Fe₂P develops a pronounced two-dimensional character due to the suppression of the magnetization in one of the sublattices, but the interlayer coupling is very sensitive to band filling and structural distortions. This feature suggests a natural explanation of the observed sharp enhancement of the Curie temperature by alloying with multiple elements, such as Co, Ni, Si, and B. The magnetocrystalline anisotropy is also tunable by electron doping, reaching a maximum near the electron count of pure Fe₂P. These findings enable the optimization of the alloy content, suggesting co-alloying of Fe₂P with Co (or Ni) and Si as a strategy for maximizing the magnetocrystalline anisotropy at and above room temperature.

View Accepted Manuscript (DOE)

Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-07CH11358

OSTI ID:: 1415797

Alternate ID(s):: OSTI ID: 1399065

Report Number(s):: IS-J--9528

Journal Information:: Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 5 Vol. 1; ISSN PRMHAR; ISSN 2475-9953

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (1)

Concentration-tuned tetragonal strain in alloys: Application to magnetic anisotropy of FeNi 1 − x Co x Wysocki, Aleksander L.; Nguyen, Manh Cuong; Wang, Cai-Zhuang Physical Review B, Vol. 100, Issue 10 https://doi.org/10.1103/physrevb.100.104429	journal	September 2019

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