Showing papers by "P. K. Mukhopadhyay published in 1990"
TL;DR: In this paper, the authors measured Young's modulus (E) and sound velocity (v) of the Alloy series Fe80−xNixCr20 using a vibrating reed technique for 14≤x≤30 in the temperature range 1.5-300 K.
Abstract: Young’s modulus (E) and the sound velocity (v) of the alloy series Fe80−xNixCr20 were measured using a vibrating reed technique for 14≤x≤30 in the temperature range 1.5–300 K. The measurement, done over a large range of x and T, made it possible to study and compare the elastic manifestation of various magnetic transitions in a single alloys series, from long‐range antiferromagnet (AFM) to long‐range ferromagnet (FM) through intermediate phases of spin glass (SG) and reentrant spin glass (RSG). The magnetic contribution to E and v is found to be qualitatively similar in FM and RSG alloys (both positive) and that it tends to zero as x→xc, where xc is the critical nickel concentration for the onset of ferromagnetism. In the spin glass (x
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