Anisotropic effects in dilute Pt-Mn: A nuclear orientation study

Abstract

The paper studies the behaviour of the Mn spin for dilute Mn in Pt as a function of temperature and applied field using the technique of nuclear orientation. In the preferentially oriented cubic polycrystalline foil a preferential nuclear spin ordering axis has been observed in the absence of an applied field. A measure of interaction of the spin with its environment has been obtained which may be modelled by a molecular field with mean value 440 G, and having a distribution in magnitude and direction. The saturation hyperfine field for Mn in Pt was found to be -365+or-15 kG.