caa a22 4500 388022108 CHVBK 20180307124927.0 cr unu---uuuuu 161130e199807 xx s 000 0 eng 10.1557/JMR.1998.0279 doi S0884291400045155 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0279 Large Faraday effect and local structure of alkali silicate glasses containing divalent europium ions [Elektronische Daten] Measurements of Faraday and Mössbauer 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 Mössbauer spectra indicate that about 80% of europium ions are present as a divalent state. The effective transition wavelength and effective transition probability for the 4f7 → 4f65d 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 borate 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 Mössbauer spectroscopy. Copyright © Materials Research Society 1998 Tanaka Katsuhisa Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan Fujita Koji Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan Matsuoka Nobuaki Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan Hirao Kazuyuki Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan Soga Naohiro Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan Journal of Materials Research Cambridge University Press 13/7(1998-07), 1989-1995 0884-2914 13:7<1989 1998 13 JMR https://doi.org/10.1557/JMR.1998.0279 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0279 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tanaka Katsuhisa Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan NATIONALLICENCE 700 1- Fujita Koji Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan NATIONALLICENCE 700 1- Matsuoka Nobuaki Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan NATIONALLICENCE 700 1- Hirao Kazuyuki Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan NATIONALLICENCE 700 1- Soga Naohiro Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/7(1998-07), 1989-1995 0884-2914 13:7<1989 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge