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.

doi:10.1063/1.4968517

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

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Abstract

Here, 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.

Authors:

Balasubramanian, Balamurugan ^[1];

^[1];

^[2];

^[1]; Zhang, Jie ^[3];

^[1];

^[4]; Huq, Ashfia ^[4]; Valloppilly, Shah R. ^[1]; Jin, Yunlong ^[1]; Wang, Cai -Zhuang ^[2]; Ho, Kai -Ming ^[2]; Sellmyer, David J. ^[1]

Univ. of Nebraska, Lincoln, NE (United States)
Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
Iowa State Univ., Ames, IA (United States); Chinese Academy of Sciences, Hefei (People's Republic of China)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Mon Nov 28 00:00:00 EST 2016

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS); Ames Lab., Ames, IA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1334479

Alternate Identifier(s):: OSTI ID: 1347743

Report Number(s):: IS-J-9182
Journal ID: ISSN 2166-532X; AMPADS; KC0402010; ERKCSNX

Grant/Contract Number:: AC05-00OR22725; AC02-07CH11358

Resource Type:: Accepted Manuscript

Journal Name:: APL Materials

Additional Journal Information:: Journal Volume: 4; Journal Issue: 11; Journal ID: ISSN 2166-532X

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; x-ray diffraction; crystal structure; magnetic anisotropy; coercive force; density functional theory

Citation Formats


                    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, and Sellmyer, David J. Structure and magnetism of new rare-earth-free intermetallic compounds: Fe3+xCo3-xTi2 (0 ≤ x ≤ 3).  United States: N. p., 2016. 
Web.  doi:10.1063/1.4968517.

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                    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).  United States.  https://doi.org/10.1063/1.4968517

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                    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, and Sellmyer, David J. Mon .  
"Structure and magnetism of new rare-earth-free intermetallic compounds: Fe3+xCo3-xTi2 (0 ≤ x ≤ 3)".  United States.  https://doi.org/10.1063/1.4968517.  https://www.osti.gov/servlets/purl/1334479.

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@article{osti_1334479,

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

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

  abstractNote = {Here, 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.},

  doi          = {10.1063/1.4968517},

  journal      = {APL Materials},

  number       = 11,

  volume       = 4,

  place        = {United States},

  year         = {Mon Nov 28 00:00:00 EST 2016},

  month        = {Mon Nov 28 00:00:00 EST 2016}

}

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

Abstract

Citation Formats

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