Title

A Magnetic, Neutron Diffraction, and Mössbauer Spectral Study of the Tb2Fe17-xGax Solid Solutions, with 7 ≤ x ≤ 9

Abstract

The compositional dependence of the Curie temperature of the Tb2Fe17-xGax solid solutions shows a primary maximum for x equal to three and a secondary maximum for x equal to eight. The Mössbauer spectra and powder neutron diffraction patterns of Tb2Fe9Ga8 indicate that gallium avoids the 9d site, completely fills the 6c site, and occupies preferentially the 18f site over the 18h site. This gallium preferential substitution leads to a nearly ordered two-dimensional antiferromagnetic arrangement of the terbium and iron magnetic moments, an increase in Curie temperature, and a surprisingly sharp Mössbauer spectrum.

Department(s)

Physics

Second Department

Chemistry

Keywords and Phrases

Antiferromagnetism; Gallium alloys; Iron alloys; Magnetic materials; Magnetic properties; Mössbauer spectroscopy; Neutron diffraction; Solid solutions; Terbium alloys; Curie temperature; Ferrimagnetism; Antiferromagnetic materials; Mössbauer effect

International Standard Serial Number (ISSN)

0304-8853

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1998 Elsevier Limited, All rights reserved.

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