Kumar, S and Nath, P (1966) Absorption spectra of Mn2+ion in glasses. Transactions of the Indian Ceramic Society, 25 (1). pp. 12-19. ISSN 0371-750X

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Abstract

Absorption spectra of Mn2+ ion in alumino-boro-phosphate, magnesium-aluminoborate and soda-lime-silica glasses were studied within the range, 16000 cm-1 30000 cm-1 Five absorption bands were observed at or around 19200 cm-1 [4Γ4(G)], 23300 cm-1 [4Γ5(G)], 24000 cm-1 [4Γ3,4Γ1 (G)], 28100 cm-1 [4Γ5 (D)] and 29300 cm-1 [4Γ3 (D)]. Good agreement was noticed between the observed band positions and the values calculated from ligand field considerations. The molar extinction co-efficient varied with glass composition. It is about ten times higher than that in aqueous solution and is nearly one hundredth of the corresponding value due to Mn3+ ion in the same base glass. The spectrophotometric and fluorescence studies reveal that Mn2+ ion is present mostly in octahedral coordination in alumino-boro-phosphate glass. In the silicate glasses probably the tetrahedral co-ordination is more predominant. © 1966 Taylor & Francis Group, LLC.

Item Type:	Article
Subjects:	Glass
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	22 May 2018 11:44
Last Modified:	22 May 2018 11:44
URI:	http://cgcri.csircentral.net/id/eprint/4201

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