• Stern, R. A.
• Willoughby, S. D.
• Maclaren, J. M.
• Pan, Q.
• Ramirez, A.
• Cui, J.

Abstract

<p>Ferromagnetic shape memory (FSM) alloys are scientifically and technologically interesting materials that combine ferromagnetism with a reversible martensitic phase transformation. Fe ₇₀Pd ₃₀ has recently been shown to display a FSM effect at usable temperatures and low fields. Reported here are results of experimental studies on Fe ₇₀Pd ₃₀ and electronic structure calculations on Fe ₇₀Pd _30-xPt _x. The calculations show that additions of Pt by 6 at% to Fe ₇₀Pd ₃₀ can triple the magnetocrystalline anisotropy. There is, however, a large discrepancy between the measured and calculated anisotropy values of Fe ₇₀Pd ₃₀, suggesting the presence of significant disorder in the measured samples. Other calculated structural and magnetic properties are in close agreement with experimental values.</p>

Topics

• impedance spectroscopy
• phase