| Magnetic Properties of Exchange-Coupled Dual-Layer SmTbCo Thin Films |
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| 作者姓名： | 黄致新 高建明 丁晓夏 章平 王翔 李佐宜 |
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| 作者单位： | [1]Department of Physics, Central China Normal University, Wuhan 430079 [2]Department of Physics, Yunyang Teachers College, Danjiangkou 442700 [3]Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan 430074 |
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| 基金项目： | Supported by the Natural Science Foundation of Hubei Province under Grant No 2005ABA041. |
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| 摘 要： | Exchange-coupled SmTbCo dual-layer media are prepared by an r.f magnetron sputtering system and their magnetic properties are investigated. The prepared SmTbCo dual layer is composed of a 340 emu/cm^3 TM-rich readout layer and a 5.80 kOe RE-rich memory layer, meeting the requirements of high saturation magnetization and large coercivity for hybrid recording. Through exchange coupling, the coercivity of the high-saturation- magnetization SmTbCo layer is greatly enhanced from 1.85 to 5.96 kOe. The calculated interface wall energy for Sm6.65Tb12.35Co81 （20nm）/Sm1.22Tb42.16Co56.62 （20hm） is about 3.85erg/cm62. The reversal magnetization of the SmTbCo exchange-coupling dual-layer films is analysed based on a micro-magnetic model.
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| 关 键 词： | SmTbCo 磁铁交换 薄膜 物理学 |
| 修稿时间： | 2006-08-29 |
Magnetic Properties of Exchange-Coupled Dual-Layer SmTbCo Thin Films |
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| HUANG Zhi-Xin,GAO Jian-Ming,DING Xiao-Xia,ZHANG Ping,WANG Xiang,LI Zuo-Yi.Magnetic Properties of Exchange-Coupled Dual-Layer SmTbCo Thin Films[J].Chinese Physics Letters,2007,24(1):226-228. |
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| Authors: | HUANG Zhi-Xin GAO Jian-Ming DING Xiao-Xia ZHANG Ping WANG Xiang LI Zuo-Yi |
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| Institution: | Department of Physics, Central China Normal University, Wuhan 430079
Department of Physics, Yunyang Teachers College, Danjiangkou 442700
Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan 430074 |
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| Abstract: | Exchange-coupled SmTbCo dual-layer media are prepared by an r.f magnetron sputtering system and their magnetic properties are investigated. The prepared SmTbCo dual layer is composed of a 340emu/cm3 TM-rich readout layer and a 5.80 kOe RE-rich memory layer, meeting the requirements of high saturation magnetization and large coercivity for hybrid recording. Through exchange coupling, the coercivity of the high-saturation-magnetization SmTbCo layer is greatly enhanced from 1.85 to 5.96kOe. The calculated interface wall energy for Sm6.65Tb12.35Co81 (20nm)/Sm1.22Tb42.16Co56.62 (20nm) is about 3.85erg/cm2. The reversal magnetization of the SmTbCo exchange-coupling dual-layer films is analysed based on a micro-magnetic model. |
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| Keywords: | 75 70 i 78 20 Ls |
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