Abstract
The reaction of Eu with a molten mixture of [formula omitted] and excess Se has produced a new rare earth dichalcogenide, [formula omitted] with a type “a” antiferromagnetic structure. The compound crystallizes in the tetragonal space group [formula omitted] forming into small single crystal rectangular blocks with their long axis along c. The high temperature magnetic susceptibility exhibits Curie–Weiss behavior with a ferromagnetic [formula omitted] and an effective moment [formula omitted] magnetons consistent with the theoretical value of 7.94 for the [formula omitted] free ion. There is a peak in [formula omitted] at [formula omitted] which is attributed to an antiferromagnetic transition. At [formula omitted] with the magnetic field, H, applied along c, [formula omitted] exhibits a sharp increase near 1.5 T attributed to a metamagnetic transition. With H along a the moments saturate at about 5 T. A simple mean field model in which the Eu ions in the ab plane are coupled into ferromagnetic sheets, with alternate sheets along c coupled antiferromagnetically to form a bulk antiferromagnet is used to interpret the data.
Original language | English |
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Pages (from-to) | 5381-5383 |
Number of pages | 3 |
Journal | Journal of Applied Physics |
Volume | 85 |
Issue number | 8 |
DOIs | |
Publication status | Published - Apr 15 1999 |
ASJC Scopus subject areas
- Physics and Astronomy(all)