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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.

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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