Low-Temperature Magnetic Properties of Co Antidot Array

Chin. Phys. Lett.

2006, Vol. 23

Issue (6): 1592-1595 DOI:

Original Articles

Low-Temperature Magnetic Properties of Co Antidot Array

LIU Qing-Fang;JIANG Chang-Jun;FAN Xiao-Long;WANG Jian-Bo;XUE De-Sheng

Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000

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LIU Qing-Fang, JIANG Chang-Jun, FAN Xiao-Long et al 2006 Chin. Phys. Lett. 23 1592-1595

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Abstract Cobalt antidot arrays with different thicknesses are fabricated by rf magnetron sputtering onto porous alumina substrates. Scanning electron microscopy and grazing incidence x-ray diffraction are employed to characterize the morphology and crystal structure of the antidot array, respectively. The temperature dependence of magnetic properties shows that in the temperature range 5K--300K, coercivity and squareness increase firstly, reach their maximum values, then decrease. The anomalous temperature dependences of coercivity and squareness are discussed by considering the pinning effect of the antidot and the magnetocrystalline anisotropy.

Keywords: 75.75.+a 75.50.Cc

Published: 01 June 2006

PACS:	75.75.+a
	75.50.Cc	(Other ferromagnetic metals and alloys)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2006/V23/I6/01592

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	LIU Qing-Fang
	JIANG Chang-Jun
	FAN Xiao-Long
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	XUE De-Sheng

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