Lowering of Ordering Temperature for L10-FePt in FePt/Cu Multilayers

Acta Metall Sin

2005, Vol. 41

Issue (6): 659-662 DOI:

Research Articles

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Lowering of Ordering Temperature for L10-FePt in FePt/Cu Multilayers

LI Baohe; HWANG Pol; YANG Tao; FENG Chun; TENG Jiao; ZHU Fengwu

Department of Material Physics and Chemistry; University of Science and Technology Beijing; Beijing 100083; Department of Mathematics and Physics; Beijing Technology and Business University; Beijing 100037

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LI Baohe; HWANG Pol; YANG Tao; FENG Chun; TENG Jiao; ZHU Fengwu. Lowering of Ordering Temperature for L10-FePt in FePt/Cu Multilayers. Acta Metall Sin, 2005, 41(6): 659-662 .

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Abstract FePt/Cu multilayers and FePt thin films were prepared by DC magnetron sputtering. The as-prepared samples were annealed in vacuum at a temperature range of 300-550 ℃ for 1 h. It is found that the addition of Cu could reduce the ordering temperature of FePt. The ordering parameter $S$ was evaluated to be 0.6, and the coercivity reached 421 kA/m in [FePt(4 nm)/Cu(0.2 nm)]10 multilayers annealed at 350 ℃. The Cu layer induced reduction of ordering temperature is ascribed to both kinetic and thermodynamic factors.

Key words: FePt/Cu multilayer L10-FePt ordered phase magnetron sputtering

Received: 19 October 2004

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	LI Baohe
	HWANG Pol
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	TENG Jiao
	ZHU Fengwu

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2005/V41/I6/659

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