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Changes in the Bragg-Williams Parameter with Deformation in Ordered Au4V

Published online by Cambridge University Press:  06 March 2019

B. G. LeFevre and
E. A. Starke Jr.
B. G. LeFevre
Affiliation:
Georgia Institute of Technology, Atlanta, Georgia 30332
E. A. Starke Jr.
Affiliation:
Georgia Institute of Technology, Atlanta, Georgia 30332
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Abstract

The intermetallic compound Au4V is known to be ferromagnetic at temperatures below 43°K. Its ferromagnetism, which has been attributed to long range order, can he destroyed by cold deformation. The present study was undertaken to determine how the Bragg and Williams long-range-order parameter of the fully-ordered alloy varied as a function of deformation by cold rolling. Because of complexities in the diffraction spectrum it was not possible to determine 5 by a simple ratio of integrated intensities as is frequently done in other ordered systems, A treatment was developed to handle these difficulties using a modification of a method developed by Giamei and Freise for determining volume fractions of mixed phases. These results are correlated with magnetic measurements made by Chin and coworkers at Bell Laboratories.

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Type
Research Article
Information
Advances in X-Ray Analysis , Volume 12: Seventeenth Annual Conference on Applications of X-ray Analysis, August 21-23, 1968 , 1968, pp. 113 - 128
Copyright
Copyright © International Centre for Diffraction Data 1968

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References

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