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Lowering of ordering temperature for L100-FePt in Fe/Pt multilayers

## Lowering of ordering temperature for L100-FePt in Fe/Pt multilayers

Yang Tao, Zhai Zhong-Hai, Zhu Feng-Wu, Li Bao-He, Hwang Pol
• #### Abstract

Fe/Pt multilayers and FePt thin films were prepared by DC magnetron sputtering. The as-prepared samples were subjected to vacuum annealing at temperatures in t he range of 300—550℃. The multilayered structure is an effective approach fo r reducing the ordering temperature of FePt. The ordering parameter S is evaluated to be 06, and correspondingly the coercivity is evaluated to be 501kA/m in ［Fe(15nm)/Pt(15nm)］1313 multilayers annealed at 350℃ for 20min. Relatively low ordering temperature for the multilayer is due to the e xtra driving force of ordering process caused by the vanishing of the multilayer interface at annealing.

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#### Cited By

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•  Citation:
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• Abstract views:  2715
• Cited By: 0
##### Publishing process
• Received Date:  19 August 2004
• Accepted Date:  06 September 2004
• Published Online:  19 April 2005

## Lowering of ordering temperature for L100-FePt in Fe/Pt multilayers

• 1. (1)北京科技大学材料物理与化学系,北京 100083; (2)北京科技大学材料物理与化学系,北京 100083;北京工商大学数理部,北京 100037; (3)北京科技大学材料物理与化学系,北京 100083;金日成综合大学物理系,朝鲜平壤

Abstract: Fe/Pt multilayers and FePt thin films were prepared by DC magnetron sputtering. The as-prepared samples were subjected to vacuum annealing at temperatures in t he range of 300—550℃. The multilayered structure is an effective approach fo r reducing the ordering temperature of FePt. The ordering parameter S is evaluated to be 06, and correspondingly the coercivity is evaluated to be 501kA/m in ［Fe(15nm)/Pt(15nm)］1313 multilayers annealed at 350℃ for 20min. Relatively low ordering temperature for the multilayer is due to the e xtra driving force of ordering process caused by the vanishing of the multilayer interface at annealing.

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