Low-Temperature Magnetic Properties of Co Antidot Array  

作　　者：刘青芳 蒋长军 范小龙 王建波 薛德胜 

机构地区：[1]Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000

出　　处：《Chinese Physics Letters》2006年第6期1592-1595,共4页中国物理快报（英文版）

基　　金：Supported by the Doctorial Start-up Fund of Lanzhou University and the National Natural Science Foundation of China under Grant Nos 10404011 and 50401018.

摘　　要：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 5 K-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.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 5 K-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.

关 键 词：PERMALLOY ARRAYS ANISOTROPY 

分 类 号：O7[理学—晶体学]