J. Phys. Soc. Jpn. 42 (1977) pp. 72-75  |Next Article|  |Table of Contents|
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Mössbauer Study of Fe_1-xCr_x Alloys

Hisashi Kuwano and Kazuo Ôno¹

(Received June 14, 1976)

The internal field H_int at ⁵⁷Fe nuclei in Fe_1-xCr_x 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, H_int varies almost linearly with increasing x from the value 340 kOe at x=0 to 120 kOe at x=0.93. As for alloys Fe_0.15Cr_0.85 and Fe_0.13Cr_0.87, 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

URL: http://jpsj.ipap.jp/link?JPSJ/42/72/
DOI: 10.1143/JPSJ.42.72

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