High-Field Torque Measurement of FePt Nanoparticles

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概要

• 論文の詳細を見る

• Two methods using torque measurement in magnetic fields of up to 90 kOe were applied to evaluating the magnetocrystalline anisotropy of FePt nanoparticle samples with various order parameters. The maximum anisotropy field in the samples was obtained from the rotational hysteresis loss measurement. It was shown that the maximum anisotropy field monotonically increases with the order parameter. The magnetic anisotropy constant corresponding to the maximum anisotropy field of the sample with an order parameter of 0.96 is 4.4x 10^7 erg/cm^3. The anisotropy field distribution was also obtained by using Flanders and Shtrikman's method. Thermal relaxation of magnetization was, however, superimposed on the anisotropy field distribution at 300 K.

• 社団法人日本磁気学会の論文
• 2004-02-01

著者

• SAKUMA H.

  Research Division of Functional Materials Design, Utsunomiya University

• Kitamoto Y.

  Tokyo Institute of Technology

• Nishio H.

  Meiji University

• Yamamoto H.

  Meiji University

• Yamazaki Y.

  Tokyo Institute of Technology

• Sakuma H.

  Tokyo Institute of Technology

• Sakuma H.

  Research Division Of Functional Materials Design Utsunomiya University

• Nishio H

  Meiji University

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• Magneto-optical properties of Bi-YIG particle-composite films prepared by different coprecipitation Procedures
• Bi-YIG particles prepared by different coprecipitation procedure
• High-Field Torque Measurement of FePt Nanoparticles

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