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Zn(BF_4)_2·6H_2O:Co^(2+)晶体自旋哈密顿参量的理论研究 被引量:2

Theoretical Study of Spin Hamiltonian Parameters for Zn(BF_4)_2·6H_2O:Co^(2+) Crystal
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摘要 用基于基团途径(或半经验的分子轨道法)的微扰公式计算了Co2+离子在Zn(BF4)2.6H2O晶体中的三角对称Zn2+位置的自旋哈密顿参量(g因子和超精细结构常数).通过计算,我们发现Co2+杂质中心的八面体是三角伸长的,且常数为负值.对上述结果的合理性进行了讨论. The spin-Hamiltonian parameters ( g factors g∥, g⊥ and hyperfine structure constants A∥, A⊥) of Co^2+ at the trigonal Zn^2+ site in Zn(BF4)2·6H2O:Co^2+ crystal are calculated from the perturbation formulas based on the cluster approach. From the calculations, it is found that the oxygen (or water) octahedron surrounding Co^2+ ion is trigonally elongated and the sign of constant A ⊥ is negative. The results are discussed.
出处 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2006年第4期816-819,共4页 Journal of Sichuan University(Natural Science Edition)
基金 重庆工学院科研启动基金资助项目
关键词 自旋哈密顿参量 缺陷结构 Zn(BF4)2·6H2O:Co^2+晶体 spin-Hamiltonian parameters defect structure Zn(BF4) 2· 6H2O: Co^2+ crystal
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  • 1[3]S.D.Devine and W.H.Robinson,Adv.Magn.Reson.10(1982) 53.
  • 2[4]J.F.Clare and S.D.Devine,J.Phys.C: Solid State Phys.17 (1984) 2801.
  • 3[5]W.C.Zheng,Phys.Rev.B42 (1990) 826.
  • 4[6]W.C.Zheng,J.Phys.: Condens.Matt: 2 (1990) 2179.
  • 5[7]E.B.Tucker,Phys.Rev.143 (1966) 264.
  • 6[8]A.Abragam and M.H.I.Pryce,Proc.Roy.Soc.London A206 (1951) 173.
  • 7[9]W.C.Zheng,P.Ren and S.Y.Wu,Physica B291 (2000)123 .
  • 8[10]W.C.Zheng and S.Y.Wu,Z.Naturforsch 55A (2000)539.
  • 9[11]S.Y.Wu and W.C.Zheng,Phys.Stat.Sol.B223 (2001)685.
  • 10[12]I.N.Douglas,Phys.Stat.Sol.B73 (1976) 641.

同被引文献27

  • 1Hontsu S,Ishli J,Kawai T,et al.LaSrGaO4 substrate gives oriented crystalline YBa2Cu3O7-y films[J].Appl Phys Lett,1991,59:2886.
  • 2Drozdowski M,Domagala J.Temperature study of lattice constants and Raman scattering of SrLaGaO4 single crystal[J].Solid State Commun,1995,96(10):785.
  • 3Anikeenok O A,Augustyniak-Jablokow M A,Ivanova T A,et al.Delocalisation of the Cu^2+ unpaired electron on the next nearest ligands in LaSrGa0.995Cu0.005O4 single crystal[J].Phys Status Solidi B,2001,226:R1.
  • 4Reinen D,Wegwerth J.Local and cooperative bonding effects in K2NiF4-type copper superconductors.Structural,spectroscopic and magnetic investigations on mixed crystals La1+x Sr1-x Ga1-x CuxO4[J].Physica C,1991,183:261.
  • 5Yang Z Y,Rudowicz C,Qin J.The effect of disorder in the local lattice distortions on the EPR and optical spectroscopy parameters for a new Cr^3+ defect center in Cr^3+:Mg^2+:LiNbO3[J].Physica B,2002,318:188.
  • 6Zheng W C,Zhou Q,Wu X X,et al.EPR parameters and impurity structures for Cr^3+ ions in KSc(MoO4)2,RbIn(MoO4)2 and RbSc(MO4)2 crystals[J].Spectrochim Acta A,2005,61:1243.
  • 7Griffith J S.The theory of transition-metal ions[M].London:Cambridge University Press,1964.
  • 8Kawamori A,Miyagawa I.ESR study of X-Ray irradiated crystals of copper acetate monohydrate[J].J Chem Phys,1971,55:1336.
  • 9Newman D J,Ng Betty.The superposition model of crystal fields[J].Rep Prog Phys,1989,52:699.
  • 10Yu w L,Zhang X M,Yang L X,et al.Spectroscopic properties of Cr^3+ ions at the defect sites in cubic fluoroperovskite crystals[J].Phys Rev B,1994,50:6756.

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