On the Magnetic Anisotropy of Single Crystal of Mn_5Ge_3

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概要

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• The magnetic anisotropy of a single crystal of Mn_5Ge_3 is measured by means of a torque magnetometer. The direction of easy magnetization is found to lie along the c-axis between room and liquid nitrogen temperatures. The anisotropy constants are determined as 3.0×10^5erg/cm^3 at room temperature and 4.2×10^6 erg/cm^3 at liquid nitrogen temperature. The anisotropy constant determined from magnetization curves at liquid nitrogen temperature is 3.5×10^6erg/cm^3, and agrees well with that from torque measurements. Calculation shows that magnetic dipolar interaction accounts for about 20% of the observed value of the anisotropy. Temperature dependence of the dipolar anisotropy is discussed using molecular field approximation.

• 東北大学の論文

著者

• Sato Kiyoo

  The Research Institute For Iron Steel And Other Metals

• Tawara Yoshio

  Technical Research Laboratory Wireless Division Matsushita Electric Industrial Co. Ltd.

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