| 掺V4+的KTiOPO4单晶的电子顺磁共振研究 |
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| 引用本文： | 韩世莹,眭云霞,王继杨,刘耀岗,魏景谦. 掺V4+的KTiOPO4单晶的电子顺磁共振研究[J]. 物理学报, 1993, 42(5): 859-863 |
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| 作者姓名： | 韩世莹 眭云霞 王继杨 刘耀岗 魏景谦 |
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| 作者单位： | 南京大学现代分析中心,南京210008;南京大学现代分析中心,南京210008;山东大学晶体材料研究所,济南250100;山东大学晶体材料研究所,济南250100;山东大学晶体材料研究所,济南250100 |
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| 基金项目： | 南京大学固体微结构国家重点实验室资助的课题 |
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| 摘 要： | 在室温X波段对掺V4+的KTP单晶作电子顺磁共振(EPR)谱的测量和分析表明:V4+占据的晶位可分为结晶学上不同的两类,每一类又含4个磁性不等价而结晶学上相同的V4+晶位。测量了3个互相垂直结晶主平面上的EPR超精细线随角度的变化,并用严格的最小二乘法拟合程序,确定了g和A张量的主值以及它们主轴的方向余弦。从而揭示了V4+是处在带有四角畸变的八面体环境及单胞中所有8个磁性不等价V4+晶位的空间取向
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| 关 键 词： | 磷酸钛氧钾 单晶 ESR 钒 |
| 收稿时间： | 1992-04-06 |
ELECTRON PARAMAGNETIC RESONANCE OF V4+-DOPED KTiOPO4 SINGLE CRYSTAL |
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| HAN SHI-YING,SUI YUN-XIA,WANG JI-YANG,LIU YAO-GANG and WEI JIN-QIAN. ELECTRON PARAMAGNETIC RESONANCE OF V4+-DOPED KTiOPO4 SINGLE CRYSTAL[J]. Acta Physica Sinica, 1993, 42(5): 859-863 |
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| Authors: | HAN SHI-YING SUI YUN-XIA WANG JI-YANG LIU YAO-GANG WEI JIN-QIAN |
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| Abstract: | EPR spectra of V4+-doped single crystal (V4+/KTP) were observed in X band at room temperature. The analysis on the spectra shows that the V4+ ions may occupy two kinds of crystallographically diffrent sites, each kind of sites contains four magnetically nonequivalent but crystallographically equivalent sites. The angular varitions of EPR hyperfine lines were measured with the external magnetic field in three mutually perpendicular planes. The principal values and direction cosines of the principal axes of the g and A tensors, were computed by a least-squares fitting procedure. These main results reveal that the V enters the lattice to substitute for the Ti ion of KTP to form V site with a tetragonally distorted octahetral symmetry. The orientations of all eight Ti ion sites substituted in an unit cell of KTP have been determined. |
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