The effect of doping element Zr on anisotropy and microstructure of SmCo 7-xZr x

Tunghai University Institutional Repository > 理學院 > 應用物理學系所 > 期刊論文 > Item 310901/22035

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://140.128.103.80:8080/handle/310901/22035

题名:	The effect of doping element Zr on anisotropy and microstructure of SmCo 7-xZr x
作者:	Chen, Y.Y., Hsieh, C.C., Lo, S.C., Chang, W.C., Chang, H.W., Chiou, S.H., Ouyang, H.
贡献者:	Department of Physics, Tunghai University
关键词:	Ab initio;Ab initio calculations;Anisotropy constants;Atomic percent;Coercivities;Density-functional calculations;Dominant factor;Doping effects;Effect of doping;Grain size;Saturated magnetization;Transmission electron microscope;XRD
日期:	2011
上传时间:	2013-05-15T09:09:36Z (UTC)
摘要:	Ab initio density functional calculations, transmission electron microscope, and x-ray diffraction (XRD) were used to study the dominant factor of increased coercivity for the doping effect in SmCo 7-xZr x (x = 0 to 0.3). Simulated values of saturated magnetization are 940 emu/cm 3 for SmCo 7 and 799 emu/cm 3 for SmCo 6.7Zr 0.3, which agree with experimental results within 6. The calculated anisotropy constant (for 2e) increases from 1.151 ? 10 7 erg/cm 3 for SmCo 7 to 1.934 ? 10 7 erg/cm 3 for SmCo 6.7Zr 0.3. The grain sizes remain almost the same by adding ?4 (atomic percent) Zr through the analyses of XRD. The increased anisotropy is the dominated factor for enhancing the coercivity in SmCo 6.7Zr 0.3. In addition, both results of Rietveld refinements of XRD data and ab initio calculations show that Zr situating at 2e/3g positions are more stable than 2e/2e locations, which were suggested conventionally. ? 2011 American Institute of Physics.
關聯:	Journal of Applied Physics 109 (7) , art. no. 07A748
显示于类别:	[應用物理學系所] 期刊論文

文件中的档案:

档案	大小	格式	浏览次数
index.html	0Kb	HTML	193	检视/开启

在THUIR中所有的数据项都受到原著作权保护.

数据加载中.....