Field-Induced Magnetization Steps in Intermetallic Compounds and Manganese Oxides: The Martensitic Scenario

Abstract

Field-induced magnetization jumps with similar characteristics are observed at low temperature for the intermetallic germanide Gd5Ge4and the mixed-valent manganite Pr0.6Ca0.4Mn0.96Ga0.04O3. We report that the field location -and even the existence- of these jumps depends critically on the magnetic field sweep rate used to record the data. It is proposed that, for both compounds, the martensitic character of their antiferromagnetic-to-ferromagnetic transitions is at the origin of the magnetization steps.

4 pages,4 figures

References in corpus (4)

• Ultra-sharp magnetization steps in perovskite manganites
• Martensitic accommodation strain and the metal-insulator transition in manganites
• On the athermal character of structural phase transitions
• Staircase effect in metamagnetic transitions of charge and orbitally ordered manganites

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