High-frequency EPR of Tb3+-doped KPb2Cl5 crystal

Shakurov GS; Malkin BZ; Zakirov AR; Okhrimchuk AG; Butvina LN; Lichkova NV; Zavgorodnev VN

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High-frequency EPR of Tb3+-doped KPb2Cl5 crystal

机译：掺Tb3 +的KPb2Cl5晶体的高频EPR

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High-frequency electron paramagnetic resonance (EPR) spectra of the KPb2Cl5:Tb3+ crystal have been investigated. Three types of spectra were observed in the frequency range of 74-200 GHz. The most intensive spectrum with the resolved hyperfine structure corresponded to transitions between sublevels of the Tb-159(3+) ground quasi-doublet with the zero-field splitting (ZFS) close to 48 GHz. Experimental results were analyzed by the exchange charge model of the crystal field affecting terbium ions in low-symmetry Pb2+ positions with the chlorine sevenfold coordination and the charge compensating vacancy in the nearest potassium site. The calculated values of g-factors and ZFS were in agreement with the experimental data. The nature of a broad EPR line with ZFS of about 180 GHz and of additional weak EPR lines observed as satellites of the main Tb3+ lines was discussed.

机译：研究了KPb2Cl5：Tb3 +晶体的高频电子顺磁共振（EPR）光谱。在74-200 GHz的频率范围内观察到三种类型的光谱。具有解析的超精细结构的最密集频谱对应于Tb-159（3+）地面准双峰的子级之间的跃迁，零场分裂（ZFS）接近48 GHz。通过影响低对称性Pb2 +位置上的crystal离子的晶体场的交换电荷模型对实验结果进行了分析，该交换场模型具有氯的七倍配位和最近钾位的电荷补偿空位。 g因子和ZFS的计算值与实验数据一致。讨论了ZFS约为180 GHz的宽EPR线和作为主要Tb3 +线的卫星观测到的其他弱EPR线的性质。

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《Applied Magnetic Resonance》 |2004年第4期|共8页
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Shakurov GS; Malkin BZ; Zakirov AR; Okhrimchuk AG; Butvina LN; Lichkova NV; Zavgorodnev VN;
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中图分类电磁学、电动力学;
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High-frequency EPR of Tb3+-doped KPb2Cl5 crystal

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