Magneto-optical properties of transparent divalent iron phosphate glasses

Hirofumi Akamatsu, Koji Fujita, Shunsuke Murai, Katsuhisa Tanaka

研究成果: Contribution to journalArticle査読

31 被引用数 (Scopus)

抄録

We have prepared glasses having xFeO· (100-x) P2O 5 (mol %) (x=50.0,54.0,57.1) compositions by melting under mild reducing condition and found that these glasses exhibit fairly high transmittance in the visible range and large Faraday effect at the wavelength of about 400 nm. Fe57 Mössbauer spectra confirm that almost all the iron ions are present as Fe2+ in the glasses. A spin glass transition is observed at low temperatures in the temperature dependence of magnetic susceptibility. Intense optical absorption in the ultraviolet and infrared wavelength ranges occurs by the charge transfer transition from O2- to Fe2+ and the intra-atomic d-d transition, respectively. The analysis on the wavelength dependence of the Faraday rotation angle using the Van Vleck-Hebb theory has revealed that the charge transfer transition contributes more significantly to the Faraday effect owing to the large effective transition probability, which is comparable to those reported for glasses containing 4f rare-earth ions. The magneto-optical figure of merit shows a maximum at around 380 nm.

本文言語英語
論文番号251908
ジャーナルApplied Physics Letters
92
25
DOI
出版ステータス出版済み - 2008
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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