Temperature Dependence of Magneto-Electric Effect of Magnetite (Fe₃O₄) at about 10 K

Abstract

Magneto-electric effect was measured in a temperature range between 4.2 and 30 K on a plate of Fe 3 O 4 cut parallel to (110) referred to the cubic axes. The voltage as high as several tens of volts was observed to be induced across a 1.45 mm thick specimen when the magnetization is rotated in the (110) plane at 4.2 K. The effect changes drastically as the temperature is increased towards 10 K, at which a specific heat anomaly had been reported.