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Exchange dipole optical transition in the manganese aluminosilicate glass: An insulating spin glass

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
33
Issue
1
Identifiers
DOI: 10.1016/0038-1098(80)90688-2

Abstract

Abstract We report on the absorption spectra of amorphous Mn 2+ aluminosilicates which may be considered as insulating spin glasses at low temperature. The two bands localized around 4 180 Å and 3 550 Å were assigned respectively to the 6A 1 → 4E a, 4A 1 ( 4G) and 6A 1 → 4E b( 4D) electric dipole exchange transitions. The temperature dependence of their intensity and position are related to the static two spin correlation functions of nearest ions. This gives informations on the magnetic ordering in such a spin glass.

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