| Magnetic Properties of （Sm, Tb）FeCo/Cr/TbFeCo Trilayers with Perpendicular Anisotropy |
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| 引用本文： | 王翔 苏深伟 余雪梅 由衷 蔡波. Magnetic Properties of （Sm, Tb）FeCo/Cr/TbFeCo Trilayers with Perpendicular Anisotropy[J]. 中国稀土学报(英文版), 2007, 25(2): 215-219. DOI: 10.1016/S1002-0721(07)60076-3 |
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| 作者姓名： | 王翔 苏深伟 余雪梅 由衷 蔡波 |
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| 作者单位： | Department of Electronic Science and Technology, Beihang University, Beijing 100083, China |
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| 基金项目： | Foundation item： Project supported by the National Natural Science Foundation of China （90306008）, Item of ＂Engineering Research Institute, Peking University （ERIPKU）＂, and Spaceflight Science and Technology Innovation Foundation |
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| 摘 要： | A series of （Sm, Tb）FeCo/Cr/TbFeCo trilayers with perpendicular anisotropy was prepared by RF magnetron sputtering, and the effect of Cr interlayer thickness on magnetic properties and interlayer exchange coupling was investigated. All the samples showed strong out-of-plane anisotropy but their hysteresis loops displayed two types ： singlephase and double-phase, indicating that interlayer exchange coupling and magnetic properties varied with the thickness of Cr interlayer. Both saturation field Hs and （1-Mr/Ms） curves indicated that interlayer exchange coupling oscillated between antiferromagnetic and ferromagnetic with a period of 1.6 nm, and the oscillation strength attenuated with increasing Cr interlayer thickness. After being annealed at 450℃ for 25 min, the hysteresis loops of all the samples became single-phase type and coercivity Hc decreased greatly, which could be attributed to the decrease of effective anisotropy in （Sm, TbFeCo） grains.
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| 关 键 词： | 稀土 TbFeCo薄膜 三层结构 磁性能 垂直各向异性 层间耦合 |
| 文章编号： | 1002-0721（2007）02-0215-05 |
| 收稿时间： | 2006-04-27 |
| 修稿时间： | 2006-07-03 |
Magnetic Properties of (Sm, Tb)FeCo/Cr/TbFeCo Trilayers with Perpendicular Anisotropy |
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| Xiang , Shenwei Su, Xuemei Yu, Zhong You,Bo Cai. Magnetic Properties of (Sm, Tb)FeCo/Cr/TbFeCo Trilayers with Perpendicular Anisotropy[J]. Journal of Rare Earths, 2007, 25(2): 215-219. DOI: 10.1016/S1002-0721(07)60076-3 |
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| Authors: | Xiang Shenwei Su Xuemei Yu Zhong You Bo Cai |
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| Affiliation: | aDepartment of Electronic Science and Technology, Beihang University, Beijing 100083, China |
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| Abstract: | A series of (Sm, Tb)FeCo/Cr/TbFeCo trilayers with perpendicular anisotropy was prepared by RF magnetron sputtering, and the effect of Cr interlayer thickness on magnetic properties and interlayer exchange coupling was investigated. All the samples showed strong out-of-plane anisotropy but their hysteresis loops displayed two types: single-phase and double-phase, indicating that interlayer exchange coupling and magnetic properties varied with the thickness of Cr interlayer. Both saturation field Hs and (1-Mr/Ms) curves indicated that interlayer exchange coupling oscillated between antiferromagnetic and ferromagnetic with a period of 1.6 nm, and the oscillation strength attenuated with increasing Cr interlayer thickness. After being annealed at 450 °C for 25 min, the hysteresis loops of all the samples became single-phase type and coercivity Hc decreased greatly, which could be attributed to the decrease of effective anisotropy in (Sm, TbFeCo) grains. |
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| Keywords: | TbFeCo film interlayer exchange coupling uniaxial anisotropy rare earths |
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