Effective Hyperfine Fields at the Nuclei of Os and Pt Dissolved in Fe

Abstract

The heat capacities of two alloys containing, respectively, 0.75 at.% Os and 3.21 at.% Pt dissolved in Fe have been measured from 0.08 to 1.15\ifmmode^\circ\else\textdegree\fi{}K. From the coefficients of the ${T}^{\ensuremath{-}2}$ terms, the hyperfine fields at the nuclei were found to be 1400 kOe for Os and 1390 kOe for Pt.