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Paper detail

Coupled atomic motion and spin-glass transition in FeAl2

We have used 57Fe Mossbauer spectroscopy and x-ray diffraction to study the magnetic and vibrational properties of FeAl2. FeAl2 is an ordered intermetallic with a large Fe local moment, and a complex crystal structure with site-occupation disorder on some sites. This material exhibits spin-glass freezing below 35 K. From the 57Fe recoilless fraction, we find that there is a vibrational mode which freezes out concurrently with the spin freezing. X-ray powder diffraction measurements confirm this result, indicating an anomalous change in the Debye-Waller factor at temperatures below the spin-freezing temperature.

preprint2005arXivOpen access
Yang LiF. G. VagizovV. GorugantiJoseph H. Ross, Jr.Zuxiong XuGuohui CaoCheng DongZhaosheng Feng
cond-mat.mtrl-sci
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Yang LiF. G. VagizovV. GorugantiJoseph H. Ross, Jr.Zuxiong XuGuohui CaoCheng DongZhaosheng Feng

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