Noncollinear spin structure in ( ) from neutron diffraction
Abstract
Neutron powder diffraction has been used to investigate the spin structure of the hard-magnetic alloy Fe3+xCo3–xTi2 (x = 0,2,3). The materials are produced by rapid quenching from the melt, they possess a hexagonal crystal structure, and they are nanocrystalline with crystallite sizes D of the order of 40 nm. Projections of the magnetic moment onto both the crystalline c axis and the basal plane were observed. The corresponding misalignment angle exhibits a nonlinear decrease with x, which we explain as a micromagnetic effect caused by Fe-Co site disorder. As a result, the underlying physics is a special kind of random-anisotropy magnetism that leads to the prediction of 1/D1/4 power-law dependence of the misalignment angle on the crystallite size.
- Authors:
-
- Univ. of Nebraska, Lincoln, NE (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1531241
- Alternate Identifier(s):
- OSTI ID: 1524474
- Grant/Contract Number:
- AC05-00OR22725; FG02-04ER46152
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Materials
- Additional Journal Information:
- Journal Volume: 3; Journal Issue: 6; Journal ID: ISSN 2475-9953
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
Citation Formats
Wang, Haohan, Balasubramanian, Balamurugan, Pahari, Rabindra, Skomski, Ralph, Liu, Yaohua, Huq, Ashfia, Sellmyer, D. J., and Xu, Xiaoshan. Noncollinear spin structure in Fe3+xCo3–xTi2 ( x=0,2,3 ) from neutron diffraction. United States: N. p., 2019.
Web. doi:10.1103/PhysRevMaterials.3.064403.
Wang, Haohan, Balasubramanian, Balamurugan, Pahari, Rabindra, Skomski, Ralph, Liu, Yaohua, Huq, Ashfia, Sellmyer, D. J., & Xu, Xiaoshan. Noncollinear spin structure in Fe3+xCo3–xTi2 ( x=0,2,3 ) from neutron diffraction. United States. https://doi.org/10.1103/PhysRevMaterials.3.064403
Wang, Haohan, Balasubramanian, Balamurugan, Pahari, Rabindra, Skomski, Ralph, Liu, Yaohua, Huq, Ashfia, Sellmyer, D. J., and Xu, Xiaoshan. Tue .
"Noncollinear spin structure in Fe3+xCo3–xTi2 ( x=0,2,3 ) from neutron diffraction". United States. https://doi.org/10.1103/PhysRevMaterials.3.064403. https://www.osti.gov/servlets/purl/1531241.
@article{osti_1531241,
title = {Noncollinear spin structure in Fe3+xCo3–xTi2 ( x=0,2,3 ) from neutron diffraction},
author = {Wang, Haohan and Balasubramanian, Balamurugan and Pahari, Rabindra and Skomski, Ralph and Liu, Yaohua and Huq, Ashfia and Sellmyer, D. J. and Xu, Xiaoshan},
abstractNote = {Neutron powder diffraction has been used to investigate the spin structure of the hard-magnetic alloy Fe3+xCo3–xTi2 (x = 0,2,3). The materials are produced by rapid quenching from the melt, they possess a hexagonal crystal structure, and they are nanocrystalline with crystallite sizes D of the order of 40 nm. Projections of the magnetic moment onto both the crystalline c axis and the basal plane were observed. The corresponding misalignment angle exhibits a nonlinear decrease with x, which we explain as a micromagnetic effect caused by Fe-Co site disorder. As a result, the underlying physics is a special kind of random-anisotropy magnetism that leads to the prediction of 1/D1/4 power-law dependence of the misalignment angle on the crystallite size.},
doi = {10.1103/PhysRevMaterials.3.064403},
journal = {Physical Review Materials},
number = 6,
volume = 3,
place = {United States},
year = {2019},
month = {6}
}
Web of Science
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