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Co掺杂锶铁氧体SrFe_(12)O_(19)磁性机理的理论研究 被引量：2

Theoretical Study on the Magnetic Mechanism of Co-doped Strontium Hexaferrite SrFe_(12)O_(19)
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摘要 采用第一性原理方法研究了Co掺杂锶铁氧体SrFe_(12)O_(19)的磁性机理.对未掺杂和掺杂后体系的基态能量、电子结构、态密度进行了计算分析.计算结果表明预测的未掺杂的SrFe_(12)O_(19)呈现出亚铁磁性,Fe原子2a、2b、12k晶位的磁矩与4f1、4F2晶位的磁矩反平行排列;Co在SrFe_(12)O_(19)中优先占据2a晶位,并能够有效增强SrFe_(12)O_(19)的磁性. The magnetic mchanism of Co-dope strontium hexaferrite SrFe12O19 was studied using first-principles method.Ground state energy,electronic structures and density of states were investigated for the undoped and Co-doped configurations.The calculated results imply that the SrFe12O19 shows ferromagnetic ordering;the magnetic moment of Fe atoms at the 2a,2b and12 k sites anti-parallel to the rest of Fe atoms at 4fl and 4f2 sites;Co atom tends to substitute Fe atom at 2a site;the Co-doped SrFe12O19 has a larger magnetic moment.
作者 李强 王藩侯 黄多辉 曹启龙 杨俊升 万明杰 邵菊香
机构地区 宜宾学院计算物理四川省高等学校重点实验室
出处 《宜宾学院学报》 2014年第6期33-35,共3页 Journal of Yibin University
基金 宜宾市重点科技项目(2012SF034) 四川省教育厅项目(13ZA0198 13ZB0211)
关键词 第一性原理 SrFe12O19 磁性 first-principles SrFe12O19 magnetism
分类号 O482.5 [理学—固体物理] TM27 [一般工业技术—材料科学与工程]
作者简介 李强（1981-），男。助教，硕士，研究方向为材料热力学和磁性
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参考文献13

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共引文献13

同被引文献21

  • 1刘先松,贾道宁,胡锋,朱德如,Jose Luis Menéndez.钴掺杂锶铁氧体的磁光克尔效应研究[J].稀有金属材料与工程,2012,41(S2):63-66. 被引量：3
  • 2胡国光,姚学标,尹平,李文凤.Al3＋替代对Mg－Mn微波铁氧体性能的影响[J].安徽大学学报（自然科学版）,1996,20(2):44-47. 被引量：3
  • 3黄凯,刘先松,周圣强,王勇,蔡霞,孙红军,马宝,Pablo Hernández-Gómez.La、Co取代对M型锶铁氧体结构和磁性能的影响[J].磁性材料及器件,2006,37(4):17-19. 被引量：18
  • 4黄凯,刘果红,唐震,盛守奇,刘先松.镧钴掺杂锶铁氧体的制备及相变研究[J].安徽大学学报（自然科学版）,2007,31(3):62-64. 被引量：4
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二级引证文献3

宜宾学院学报
2014年 第6期

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