Theoretical studies of the local structures and electron paramagnetic resonance parameters for Cu2+ center in Zn(C3H3O4)2(H2O)2 single crystal

Theoretical studies of the local structures and electron paramagnetic resonance parameters for Cu2+ center in Zn(C3H3O4)2(H2O)2 single crystal
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Zn(C3H3O4)2(H2O)2单晶Cu2中心局域结构及电子顺磁共振参数的理论研究

DOI:
10.1080/10420150.2014.913590
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发表时间:
2014-07
影响因子:
1
通讯作者:
Wan Xiong
Wan Xiong
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Zhang Hua-Min;Xiao Wen-Bo;Wan Xiong

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通过考虑Zn(C3 H3 O 4)2(H2O)2(DABMZ)单晶中Cu ~(2+)离子基态波函数中d轨道的混合,解释了其电子顺磁共振参数(g因子gxx,gyy,gzz和超精细结构常数Axx,Ayy,Azz).在此基础上,得到了杂质Cu ~(2+)中心的局域结构参数(Ra = 1.92 μ m,Rb = 1.96 μ m,Rc = 1.99 μ m)。基于DABMZ晶体中Cu ~(2+)− O ~(2-)键长的EPR参数与实验值吻合较好,与前人的研究结果相比有了一定的改进。
The electron paramagnetic resonance (EPR) parameters (g factors gxx, gyy, gzz and hyperfine structure constants Axx, Ayy, Azz) are interpreted by taking account of the admixture of d-orbitals in the ground state wave function of the Cu2+ ion in a Zn(C3H3O4)2(H2O)2 (DABMZ) single crystal. Based on the calculation, local structural parameters of the impurity Cu2+ center were obtained (i.e. Ra≈1.92 Å, Rb≈1.96 Å, Rc≈1.99 Å). The theoretical EPR parameters based on the above Cu2+−O2− bond lengths in the DABMZ crystal show good agreement with the observed values and some improvements have been made as compared with those in the previous studies.
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