Temperature Dependence of Absorption Bands of (NH_4)_2SO_4:Tl Crystal
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概要
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The absorption spectra of ammonium sulphate, (NH.).50., crystals containing asmall amount of thallous ions have been measured in the energy region from 20000 to60000 cm '. At 15'C only one broad band is found for all of a, b and c-polarizedlights below the fundamental absorption edge of the host crystals. However, atl96'C the band for c-polarized light is split into two, 46450 and 47750 cm ', andfor a-polarized light there appears a shoulder in the higher energy side of the band.These absorption bands are attributed to the superposition of the transitions betweenthe molecular orbitals in the two unequivalent Tl-(SO.). complexes. The temperaturedependence of the absorption spectra is explained by that of the molecular orbitalenergies of the complexes and that of the crystal fields of (NH.).50. crystals.
- 社団法人日本物理学会の論文
- 1987-01-15
著者
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Mabuchi Teruhiko
Institute For Applied Physics University Of Tsukuba
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Abe Hidenori
Institute Of Applied Physics University Of Tsukuba
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Abe Hidenori
Institute Of Applied Physics University Of Tsukuba:nippon Mining Co. Ltd.central Research Laboratori
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