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

doi:10.1063/1.4968517

Structure and magnetism of new rare-earth-free intermetallic compounds: Fe_3+xCo_3-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

STS Project Technical Systems

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

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 language	English
Article number	116109
Journal	APL Materials
Volume	4
Issue number	11
DOIs	https://doi.org/10.1063/1.4968517
State	Published - Nov 1 2016

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@article{35c4faa732f3473a81d2c62172db9732,

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

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.",

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

note = "Publisher Copyright: {\textcopyright} 2016 Author(s).",

year = "2016",

month = nov,

day = "1",

doi = "10.1063/1.4968517",

language = "English",

volume = "4",

journal = "APL Materials",

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TY - JOUR

T1 - Structure and magnetism of new rare-earth-free intermetallic compounds

T2 - Fe3+xCo3-xTi2(0 ≤ x ≤ 3)

AU - Balasubramanian, Balamurugan

AU - Das, Bhaskar

AU - Nguyen, Manh Cuong

AU - Xu, Xiaoshan

AU - Zhang, Jie

AU - Zhang, Xiaozhe

AU - Liu, Yaohua

AU - Huq, Ashfia

AU - Valloppilly, Shah R.

AU - Jin, Yunlong

AU - Wang, Cai Zhuang

AU - Ho, Kai Ming

AU - Sellmyer, David J.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85000977720

U2 - 10.1063/1.4968517

DO - 10.1063/1.4968517

M3 - Article

AN - SCOPUS:85000977720

SN - 2166-532X

VL - 4

JO - APL Materials

JF - APL Materials

IS - 11

M1 - 116109

ER -

Structure and magnetism of new rare-earth-free intermetallic compounds: Fe_3+xCo_3-xTi₂(0 ≤ x ≤ 3)

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