J. Phys. Soc. Jpn. 42 (1977) pp. 72-75 |Next Article| |Table of Contents|
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Mössbauer Study of Fe1-xCrx Alloys
Muroran Institute of Technology
1Institute for Solid State Physics, The University of Tokyo
(Received June 14, 1976)
The internal field Hint at 57Fe nuclei in Fe1-xCrx alloys has been measured at 4.2 K and 1.7 K in the concentration range 0≤x≤0.96 by means of the Mössbauer effect. In the concentration range 0≤x≤0.93, Hint varies almost linearly with increasing x from the value 340 kOe at x=0 to 120 kOe at x=0.93. As for alloys Fe0.15Cr0.85 and Fe0.13Cr0.87, the temperature dependence of the internal field has been examined from 300 to 4.2 K. In each of both alloys, the field vs temperature curve shows two plateaus around 40 K and 4 K, having respectively values of 35 and 120 kOe. This suggests that the magnetic moments of Fe in the alloys thermally fluctuate above 30 K, and the observed field of 35 kOe is mainly ascribed to the magnetic moments of Cr ordered in an antiferromagnetic state, while the magnetic moments of Fe become ordered below 30 K, producing the larger internal field of about 120 kOe at 4.2 K.
©1977 The Physical Society of Japan
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