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STRUCTURES AND MAGNETIC PROPERTIES OF ISOTROPIC NANOSTRUCTURED Fe-Pt THIN FILMS

ZHANG MAO-CAI QIAO YI HU BO-PING WANG JIN WANG YIN-JUN SHEN BAO-GEN WANG YI-ZHONG

STRUCTURES AND MAGNETIC PROPERTIES OF ISOTROPIC NANOSTRUCTURED Fe-Pt THIN FILMS

ZHANG MAO-CAI, QIAO YI, HU BO-PING, WANG JIN, WANG YIN-JUN, SHEN BAO-GEN, WANG YI-ZHONG
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  • Abstract views:  2735
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  • Received Date:  25 November 1999
  • Accepted Date:  03 January 2000
  • Published Online:  20 August 2000

STRUCTURES AND MAGNETIC PROPERTIES OF ISOTROPIC NANOSTRUCTURED Fe-Pt THIN FILMS

  • 1. (1)北京科技大学新金属材料国家重点实验室,北京 100083; (2)中国科学院三环新材料研究开发公司研究部,北京 100080; (3)中国科学院物理研究所磁学国家重点实验室,北京 100080; (4)中国科学院物理研究所磁学国家重点实验室,北京 100080;中国科学院三环新材料研究开发公司研究部,北京 100080

Abstract: Two series of isotropic nanostructured Fe-Pt permenent magnetic thin films have been prepared by sputtering Fe/Pt multilayers and subsequent vacuum annealing. Their structures and magnetic properties have been inverstigated. Studies show that Fe-Pt permenent magnetic thin films with Fe-rich were composed of two phases: a hard FePt phase and a soft Fe3Pt phase. Saturation magnetic polarization and remaenence increase with increasing thickness of the Fe layer. Kelly-Henkel plot indicates that magnetic interactions in Fe-Pt thin films are mainly determined by ferromagnetic exchange interaction between neighboring grains.

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