journal article·2016-11-01Open access

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

APL Materials· Volume 4· Issue 11

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.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Magnetic Properties of Alloys · Magnetic properties of thin films · Magnetic and transport properties of perovskites and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

University of Nebraska 1 Nebraska Center for Materials and Nanoscience, , Lincoln, Nebraska 68588, USA

University of Nebraska 2 Department of Physics and Astronomy, , Lincoln, Nebraska 68588, USA

US Department of Energy 3 Ames Laboratory, , Ames, Iowa 50011, USA

Iowa State University 4 Department of Physics and Astronomy, , Ames, Iowa 50011, USA

Chinese Academy of Sciences 5 Key Laboratory of Material Physics, Institute of Solid State Physics, , Hefei 230031, People’s Republic of China

Oak Ridge National Laboratory 6 Quantum Condensed Matter Division, , Oak Ridge, Tennessee 37831, USA

Oak Ridge National Laboratory 7 Chemical and Engineering Materials Division, , Oak Ridge, Tennessee 37831, USA

Funding

Nebraska Center for Materials and Nanoscience · Spallation Neutron Source User Facility · National Science Foundation

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