Pressure-induced magnetic phase transition in strong itinerant ferromagnet Fe3Pt

✍ Scribed by M.M. Abd-Elmeguid; H. Micklitz

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 270 KB
• Volume: 163
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(90)90227-l

✦ Synopsis

We have investigated the magnetic properties of strong itinerant ferromagnetic Fe7ZPt2R (ordered and disordered phases) at pressures up to 8 GPa and at various temperatures (300 to 4.2 K) using the "Fe high pressure Miissbauer effect technique.

We observe (in both cases) for the first time a pressure-induced magnetic phase transition from the ferromagnetic (FM) high-moment state to a low-moment magnetic state. The result is consistent with recent theoretical calculations of the volume dependence of the Fe moment in FM pure fee Fe. This observation clearly demonstrates a unique physical picture of the ferromagnetism in 3d ferromagnetic systems that exhibit large magnetovolume anomalies. The effect of atomic ordering on the stability of the FM ground state is also discussed.