EPR investigations of Eu2+ in orthorhombic sites of NaCl
EPR investigations of Eu2+ in orthorhombic sites of NaCl
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NaCl 斜方晶格位点中 Eu2+ 的 EPR 研究
DOI：
10.1063/1.1680965
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发表时间：
1974
期刊：
影响因子：
--
通讯作者：
R. W. Reynolds
中科院分区：
文献类型：
--
作者：
G. Aguilar;L. Boatner;R. W. Reynolds
在77和300 K下测定了描述NaCl单晶正交晶位中Eu 2 + EPR谱的自旋-哈密顿参数。以前未确定的绝对符号的参数推导出在液氦温度下的相对线强度的观测。发现二阶自旋哈密顿参数b20的符号为正，因此与Nair等人报道的KCl中Eu 2+的符号一致。以前提出的模型的正交Eu 2+缺陷碱金属卤化物进行了讨论。
Spin‐Hamiltonian parameters describing the EPR spectrum of Eu2+ in orthorhombic sites of NaCl single crystals have been determined at 77 and 300 K. Previously undetermined absolute signs of the parameters were deduced from observations of relative line intensities at liquid helium temperatures. The sign of the second‐order spin‐Hamiltonian parameter b20 was found to be positive and is therefore in agreement with the sign reported by Nair et al. for Eu2+ in KCl. Previously proposed models for the orthorhombic Eu2+ defects in alkali halides are discussed.