Magnetic Properties and Microstructure of TbFeCoAg Amorphous Thin Films

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概要

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• The effect of Ag content on the magnetic properties and microstructure of Tb19.05Fe22.01Co58.94-xAgx film ($x=0--18.51$ at. %) were investigated. As judged from X-ray diffraction and transmission electron microscopy analyses, as-deposited Tb19.05Fe22.01Co58.94-xAgx films were amorphous. It was found that the addition of a small amount of the nonmagnetic element Ag into TbFeCo increases the saturation magnetization ($M_{\text{s}}$) and perpendicular coercivity ($H_{\text{c}\bot}$) of the film. For a Tb19.05Fe22.01Co55.75Ag3.19 film, the $M_{\text{s}}$ is 268 emu/cm3, the perpendicular squareness is 0.94 and the $H_{\text{c}\bot}$ is 2058 Oe at room temperature. The $H_{\text{c}\bot}$ of the Tb19.05Fe22.01Co55.75Ag3.19 film decreases to approximately 40 Oe as temperature is increased to 200 °C. This film has potential for heat-assisted magnetic recording media applications.

• 2006-05-15

著者

• Yao Yeong-der

  Institute Of Physics Academia Sinica

• Kuo Po-cheng

  Institute Of Material Science And Engineering National Taiwan University

• Chou Chun-Yuan

  Institute of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan

• Yao Yeong-Der

  Institute of Physics, Academia Sinica, Taipei 115, Taiwan

• Cheng Nai-Wen

  Institute of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan

• Fang Yen-Hsiang

  Institute of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan

• Chen Sheng-Chi

  Center for Nanostorage Research, National Taiwan University, Taipei 106, Taiwan

• Sun An-Cheng

  Institute of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan

• Kuo Po-Cheng

  Institute of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan

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