Anomalous Behavior in Temperature Dependence of Pyroelectric Polarization and Magnetoelectric Polarization of Magnetite below 60 K

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概要

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• An electric polarization which contains spontaneous electric polarization andmagnetoelectric polarizatioxa of magnetite was measured over a temperature rangefrom 4.2 K to 60 K. The observed electric polarization is divided into two parts : one isdue to rotation of magnetization and the other is indepencient of it. An anomalousbehavior in temperature dependence was observed in both of these two parts at thesame temperature of 6 K. In earlier reports, anomalous lcehaviors in pyroelectricpolarization and in magnetoelectric polarization were meas,ured individually at thistemperature. Another anomaly was observed at about 45 K, which was interpreted asan effect due to the switching of the a axis to the b axis by the magnetic field. A changecaused by breaking of the mirror symmetry was not observed at about 10 K in the present measurements.

• 社団法人日本物理学会の論文
• 1987-10-15

著者

• Inase Toshio

  Department Of Physics Faculty Of Science Saitama University:advanced Materials Research Laboratories

• MIYAMOTO Yoshiko

  Department of Physics,Faculty of Science,Saitama University

• Miyamoto Yoshiko

  Department Of Physics Faculty Of Science Saitama University

関連論文

• Temperature Dependence of Magneto-Electric Effect of Magnetite (Fe_3O_4) at about 10 K
• Magnetocrystalline Anisotropy of Low Temperature Phase of Magnetite
• Crystal Symmetry of Magnetite in Low Temperature Phase Deduced from Magnetoelectric Measurements
• Anomalous Behavior in Temperature Dependence of Pyroelectric Polarization and Magnetoelectric Polarization of Magnetite below 60 K
• Magnetoelectric Measurement of Magnetite (Fe_3O_4) at Low Temperatures and Direct Evidence for Nonexistence of ac Mirror Plane
• Anomaly of Pyroelectricity in Magnetite below 10 K^*

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