Magnetic properties of epitaxial Fe–Pd films measured at elevated temperatures

Abstract

Magnetic properties of disordered Fe–Pd films with 28 and 33at.% Pd epitaxially grown at room temperature were measured at room and elevated temperatures up to 900 and 600K, respectively. Thermomagnetic measurements of the film with 28at.% Pd having a body-centered-tetragonal structure in the as-deposited state show that, due to their metastability, disordered Fe–Pd phases can decompose at elevated temperatures. For a film with 33at.% Pd having a face-centered-tetragonal (fct) structure in the as-deposited state, no indication of decomposition or first order transformation is observed up to 600K, suggesting that the fct phase required for the magnetic shape memory effect is quite stable in epitaxial films.