期刊文献+

ZnX:Co^(2+)(X=S,Se,Te)中配体对g因子贡献规律的研究

Stndy on the Contribution Rule of the Ligands to the g-factors in ZnX:Co^(2+)(X=S,Se,Te) Crystals
在线阅读 下载PDF
导出
摘要 采用双自旋 轨道耦合参数模型和半经验的分子轨道法研究了Co2+离子在Ⅱ Ⅵ半磁半导体ZnX(X=S,Se,Te)中的EPRg因子.结果表明,配体Se和Te对Co2+的g因子有不可忽略的贡献,并且,配体S、Se和Te对相同中心金属Co2+的络离子的EPRg因子的贡献随配体的原子序数变大而依次增加. In this paper, the EPR g-factors for Co^2+ ions in II-VI semimagnetic semiconductors ZnX(X=S,Se,Te) are studied by means of a double spin-orbit(SO) coupling parametric model and a semiempirical molecular orbital method. The calculated results show that the contributions of the ligands Se and Te to the EPR g-factors can not be neglected. Furthermore, the contribution of ligands S、Se and Te to the g-factors in ZnX:Co^2+(X=S,Se,Te) crystals increases with the increasing atomic number.
出处 《四川师范大学学报(自然科学版)》 CAS CSCD 2004年第5期505-508,共4页 Journal of Sichuan Normal University(Natural Science)
基金 国家自然科学基金(10247006) 四川省教育厅重点科研基金资助项目
关键词 双SO耦合 ZRX: Co^2+(X=S Se Te) G因子 Double SO coupling ZnX:Co^2+(X=S,Se,Te) g-factor
  • 相关文献

参考文献15

  • 1Ham F S, Ludwig G M, Watkins G D, et al. Spin hamiltonian of Co2+[J]. Phys Rev Lett,1960,5,468-470.
  • 2Wyckoff R W G. Crystal structures[M]. New York:Interscience Puplishers INC,1964.
  • 3Koidl P, Schirmer O F, Kaufmann U. Near-infrared absorption of Co2+ in ZnS weak Jahn-Teller coupling in the 4T2 and 4T1 state[J]. Phys Rev,1973,B8(11):4926-4934.
  • 4Baranowski J M, Allen J W, Pearson G L. Crystal-field spectra of 3dn impurities in II-VI and III-V compound semiconductors[J]. Phys Rev,1967,16(3):627-632.
  • 5Hwang I, Lee J Y, Kim J E, et al. Forbidden transitions in the ZnSe:Co2+ crystal[J]. Phys Stat Sol (b),1992,173:29-32.
  • 6Zhao M G, Zhang Y F. The EPR parameters and magnetic susceptibility of CoCl2-4 Ion in Cs3CoCl5[J]. IEEE:Trans Mang Mig,1983,19(5):1972-1973.
  • 7Noras J M, Szawelska H R, Allen J W. Energy leves of cobalt in ZnSe and ZnS[J]. J Phys C:Solid State Phys,1981,14:3255-3268.
  • 8Clementi E, Raimondi D L. Atomic screening constants from SCF functions[J]. J Chem Phys,1963,38:2686-2689.
  • 9Clementi E, Raimondi D L, Reinhardt W P. Atomic screening constants from SCF functions II atoms with 37 to 86 electrons[J]. J Chem Phys,1967,47:1300-1307.
  • 10Fraga S, Saxena K M S, Karwowski J. Handbook of Atomic Data[M]. New York:Elsevier,1976.

二级参考文献77

  • 1Li Z M, Du M L. g factor of Cu^2+ with ^2A1g ground state[J]. Physica B,1997,233:89- 92.
  • 2Parker I H. Cu^2+ in ammonium fluoride-a tetrahedral site[J]. J Phys, 1971,CA:2967 -2978.
  • 3Bates C A, Chandle P E. The Jahn-Teller interaction and 3d^9 ions at tetrahedral sites: Ⅱ Tetragonal distortions[J]. J Phys, 1973,C6:1975-1980.
  • 4Grittlth J S. The Theory of Transitlon-metd Ions[M]. Cambridge:Cambridge University Press, 1961.
  • 5Zhou Y Y,J Sichuan Normal Univ,2001年,24卷,1期,51页
  • 6张乾二,多面体分子轨道,1987年
  • 7Zhao M G, Chiu M. Phys Rev,1995,B52:10043.
  • 8Zhao M G, Lei Y. Phys Rev,1997,B55:8955; J Phys:Condensed Matter,1997,9:529.
  • 9Zhao M G. J Chem Phys,1998,109:8003; J Phys:Condensed Matter,1998,10:9859.
  • 10Sugano S, Tanabe Y, Kamimura H. Multiplets of Transition-Metal Lons in Crystals[M]. New York:Academic,1970.

共引文献15

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部