Large Faraday effect and local structure of alkali silicate glasses containing divalent europium ions

Tanaka K.; Matsuoka N.; Hirao K.Soga N.Fujita K.

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Large Faraday effect and local structure of alkali silicate glasses containing divalent europium ions

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Measurements of Faraday and Mossbauer effects have been performed at room temperature for alkali silicate glasses containing a large amount of Eu2+ ions to examine the relation between local structure and magnitude of Verdet constant. The Mossbauer spectra indicate that about 80 of europium ions are present as a divalent state. The effective transition wavelength and effective transition probability for the 4f(7) --> 4f(6)5d transition of Eu2+, which causes the Faraday effect, are derived from the wavelength dependence of Verdet constant. Both effective transition wavelength and effective transition probability are large compared with berate glasses; leading to the large magnitude of Verdet constant of the alkali silicate glasses. The variation of effective transition wavelength with glass composition is connected with the change of 6s-electron density of Eu2+ evaluated from the Mossbauer spectroscopy. References: 30

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来源
《Journal of Materials Research》 |1998年第7期|1989-1995|共7页
作者
Tanaka K.; Matsuoka N.; Hirao K.Soga N.Fujita K.;
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作者单位

Kyoto Univ, Fac Engn, Div Mat Chem, Sakyo Ku, Kyoto 60601, Japan, .;

itt.eduS.K.Mishra, P.A.Keyel, M.J.Hawryluk and N.R.Agostinelli contributed equally to this work;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
Magneto-optical properties; Aluminosilicate glasses; Borate glasses; Earth; Transition; Fluorides; Mossbauer;

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Large Faraday effect and local structure of alkali silicate glasses containing divalent europium ions

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