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Effect of High Pressure on Antiferromagnetism in Cr Alloys

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3 Author(s)
Jayaraman, A. ; Bell Telephone Laboratories, Incorporated, Murray Hill, New Jersey 07974 ; Rice, T.M. ; Bucher, E.

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The pressure dependence of antiferromagnetic ordering in CrRu, CrMn, and CrRe alloys has been investigated. At low concentrations, TN drops very rapidly and nonlinearly with pressure up to some point and then exhibits a much slower variation with a distinct break in slope. We attribute this break in slope to a transition from communsurate phase (C) at lower pressures to an incommensurate phase (I) at higher pressures. If we extrapolate the paramagnetic (P) to incommensurate boundary back to 1 atm we obtain values for the Néel temperature (TNI) for P ‐ I transition, if the P ‐ C transition had not occurred first. TNI when plotted against e/a shows a sharp break at pure Cr, in accord with theoretical predictions based on the ``depairing'' effects of impurity scattering.

Published in:

Journal of Applied Physics  (Volume:41 ,  Issue: 3 )

Date of Publication:

Mar 1970

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