Showing papers by "Myriam P. Sarachik published in 1975"
TL;DR: In this paper, the power data for Ir containing 0.5 and 1 at.% Fe and pure Ir were presented for the spin fluctuation temperature Tsf = 28°K, independent of solute concentration.
7 citations
TL;DR: In this article, the magnetization and susceptibility of dilute CuAu(Fe) alloys with varying host compositions and Fe concentrations have been measured as a function of magnetic field to 50 kG at temperatures between 1.38 and 120 \ifmmode^\circ\else\textdegree\fi{}K.
Abstract: The magnetization $M$ and susceptibility $\ensuremath{\chi}$ of a series of dilute CuAu(Fe) alloys with varying host compositions and Fe concentrations have been measured as a function of magnetic field to 50 kG at temperatures between 1.38 and 120 \ifmmode^\circ\else\textdegree\fi{}K. The results for $M$ and $\ensuremath{\chi}$ for the Cu-rich alloys can be separated into linear and quadratic terms in the concentration $c$. The term proportional to ${c}^{2}$ has a spin value near $S=3$, and is attributed to the presence of pairs of ferromagnetically coupled Fe atoms. The single-impurity susceptibility yields values of the Weiss temperature ${\ensuremath{\Theta}}_{1}$ which decrease rapidly as the Au content of the host is increased. Further, all the single-impurity data fit on a single universal curve, and yield values of ${T}_{K}$ for the various CuAu hosts which are in good agreement with those deduced from other measurements. These results provide further support for the use of a one-parameter model to describe the CuAu(Fe) system.
4 citations