Structure and magnetism of new rare-earth-free intermetallic compounds: Fe3+xCo3-xTi2(0 ≤ x ≤ 3)

Balamurugan Balasubramanian, Bhaskar Das, Manh Cuong Nguyen, Xiaoshan Xu, Jie Zhang, Xiaozhe Zhang, Yaohua Liu, Ashfia Huq, Shah R. Valloppilly, Yunlong Jin, Cai Zhuang Wang, Kai Ming Ho, David J. Sellmyer

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report the fabrication of a set of new rare-earth-free magnetic compounds, which form the Fe3Co3Ti2-type hexagonal structure with P-6m2 symmetry. Neutron powder diffraction shows a significant Fe/Co anti-site mixing in the Fe3Co3Ti2 structure, which has a strong effect on the magnetocrystalline anisotropy as revealed by first-principle calculations. Increasing substitution of Fe atoms for Co in the Fe3Co3Ti2 lattice leads to the formation of Fe4Co2Ti2, Fe5CoTi, and Fe6Ti2 with significantly improved permanent-magnet properties. A high magnetic anisotropy (13.0 Mergs/cm3) and saturation magnetic polarization (11.4 kG) are achieved at 10 K by altering the atomic arrangements and decreasing Fe/Co occupancy disorder.

Original languageEnglish (US)
Article number116109
JournalAPL Materials
Volume4
Issue number11
DOIs
StatePublished - Nov 1 2016

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Magnetocrystalline anisotropy
Neutron powder diffraction
Magnetic anisotropy
Magnetism
Saturation magnetization
Rare earths
Permanent magnets
Intermetallics
Substitution reactions
Polarization
Fabrication
Atoms

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

Structure and magnetism of new rare-earth-free intermetallic compounds : Fe3+xCo3-xTi2(0 ≤ x ≤ 3). / Balasubramanian, Balamurugan; Das, Bhaskar; Nguyen, Manh Cuong; Xu, Xiaoshan; Zhang, Jie; Zhang, Xiaozhe; Liu, Yaohua; Huq, Ashfia; Valloppilly, Shah R.; Jin, Yunlong; Wang, Cai Zhuang; Ho, Kai Ming; Sellmyer, David J.

In: APL Materials, Vol. 4, No. 11, 116109, 01.11.2016.

Research output: Contribution to journalArticle

Balasubramanian, B, Das, B, Nguyen, MC, Xu, X, Zhang, J, Zhang, X, Liu, Y, Huq, A, Valloppilly, SR, Jin, Y, Wang, CZ, Ho, KM & Sellmyer, DJ 2016, 'Structure and magnetism of new rare-earth-free intermetallic compounds: Fe3+xCo3-xTi2(0 ≤ x ≤ 3)', APL Materials, vol. 4, no. 11, 116109. https://doi.org/10.1063/1.4968517
Balasubramanian, Balamurugan ; Das, Bhaskar ; Nguyen, Manh Cuong ; Xu, Xiaoshan ; Zhang, Jie ; Zhang, Xiaozhe ; Liu, Yaohua ; Huq, Ashfia ; Valloppilly, Shah R. ; Jin, Yunlong ; Wang, Cai Zhuang ; Ho, Kai Ming ; Sellmyer, David J. / Structure and magnetism of new rare-earth-free intermetallic compounds : Fe3+xCo3-xTi2(0 ≤ x ≤ 3). In: APL Materials. 2016 ; Vol. 4, No. 11.
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