| 强磁场退火对FePt薄膜结构与磁性能的影响 | |
| 陈鹏 ; 蔡强 ; 李丘林 ; 刘伟 ; CHEN Peng ; CAI Qiang ; LI Qiulin ; LIU Wei | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | 强磁场 退火 FePt薄膜 high magnetic field annealing FePt films TG132.2 |
| 其他题名 | Effects of annealing with high magnetic fields on the structure and magnetic properties of FePt films |
| 中文摘要 | 为减少FePt纳米薄膜退火过程中晶粒团聚长大,进行了在外加强磁场条件下退火实验。对化学法制备的FePt纳米薄膜,经热处理后外加磁场,并使用X射线衍射仪、透射电子显微镜、扫描电子显微镜、振动样品磁强计表征薄膜的结构、晶粒尺寸和磁性能。实验发现:外加7.96MA.m-1磁场450℃退火,样品即开始有序化相变;外加7.96MA.m-1磁场600℃退火,样品有序度要高于常规退火样品;外加1.59～6.37MA.m-1磁场550℃退火,样品晶粒明显细化、矫顽力明显提高。因此,强磁场退火能降低FePt薄膜有序化相变温度,提高有序度、细化晶粒和提高矫顽力。; FePt nano-films were annealed in the presence of high magnetic fields to reduce the grain sizes and the random distribution of during annealing.The FePt nano-films were prepared chemically,annealed,and then placed in magnetic fields.The structure,grain size,and magnetic performance were measured using XRD,TEM,SEM and VSM.The results show that an ordered transformation starts at 450℃ in a 7.96 MA ·m-1 magnetic field with a more order grain structure in the sample annealed at 600℃ with a 7.96 MA ·m-1 magnetic field than in the sample annealed without a magnetic field.Samples annealed at 550℃ in magnetic fields 1.596.37 MA· m-1 showed finer grains and higher coercivity than samples prepared without magnetic fields.So,high magnetic fields during annealing of FePt nano-films reduce the temperature of the disorder-order transformation,enhance the disorder-order transformation,reduce the grain sizes,and increase their coercivities. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/61336]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 陈鹏,蔡强,李丘林,等. 强磁场退火对FePt薄膜结构与磁性能的影响[J],2010, 2010. |
| APA | 陈鹏.,蔡强.,李丘林.,刘伟.,CHEN Peng.,...&LIU Wei.(2010).强磁场退火对FePt薄膜结构与磁性能的影响.. |
| MLA | 陈鹏,et al."强磁场退火对FePt薄膜结构与磁性能的影响".(2010). |
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