A Neutron Diffraction and Mössbauer Effect Study of the Magnetic Structure of Y₂(Fe₁₋ₓMnₓ)₁₄B

Author

Gaya Kanishka Marasinghe
Oran Allan Pringle, Missouri University of Science and TechnologyFollow
Gary J. Long, Missouri University of Science and TechnologyFollow
William Joseph James, Missouri University of Science and TechnologyFollow
William B. Yelon, Missouri University of Science and Technology
Fernande Grandjean, Missouri University of Science and TechnologyFollow

Abstract

The magnetic structures of a series of Y₂(Fe _1-xMn_x)₁₄B samples, with x equal to 0.03, 0.10, 0.25, and 0.37, have been studied by powder neutron diffraction and Mössbauer spectroscopy. Y₂(Fe_0.97Mn _0.03)₁₄B and Y₂(Fe_0.9Mn _0.1)₁₄B are ferromagnetic at both 295 and 85 K, Y ₂(Fe_0.63Mn_0.37)₁₄B is paramagnetic at both 295 and 85 K, whereas Y₂(Fe_0.75Mn _0.25)₁₄B is paramagnetic at 295 K and is partially ordered at 78 K. The magnetic structure of Y₂(Fe_0.75Mn _0.25)₁₄B is explained in terms of the preferential Mn occupancy of the transition metal 8j₂ site in the Y ₂Fe₁₄B structure. Small amounts of Mn located in this site are very effective in disrupting the long-range ferromagnetic coupling.

Recommended Citation

G. K. Marasinghe et al., "A Neutron Diffraction and Mössbauer Effect Study of the Magnetic Structure of Y₂(Fe₁₋ₓMnₓ)₁₄B," Journal of Applied Physics, vol. 70, no. 10, pp. 6149 - 6151, American Institute of Physics (AIP) Publishing, May 1993.

The definitive version is available at https://doi.org/10.1063/1.350025

Department(s)

Physics

Second Department

Chemistry

International Standard Serial Number (ISSN)

0021-8979

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1991 American Institute of Physics (AIP) Publishing, All rights reserved.

Publication Date

01 May 1993