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VOLUME 37 (1983) | ISSUE 11 | PAGE 520
Transition of a ferroelectric to a state with a magnetic moment in an external electromagnetic field
Illumination generates a magnetic moment in the ferroelectric semiconductor GeTe. The moment disappears upon a phase transition to a paraelectric state. The effect is interpreted as either a consequence of an anomalous photovoltaic effect which forms ring currents or a transition to a ferromagnetic state in the external electromagnetic field.