Magneto-optical properties of transparent divalent iron phosphate glasses

Hirofumi Akamatsu, Koji Fujita, Shunsuke Murai, Katsuhisa Tanaka

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number251908
JournalApplied Physics Letters
Volume92
Issue number25
DOIs
Publication statusPublished - Jul 4 2008
Externally publishedYes

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phosphates
Faraday effect
optical properties
iron
glass
charge transfer
wavelengths
figure of merit
transition probabilities
spin glass
transmittance
ions
optical absorption
rare earth elements
melting
magnetic permeability
temperature dependence

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Magneto-optical properties of transparent divalent iron phosphate glasses. / Akamatsu, Hirofumi; Fujita, Koji; Murai, Shunsuke; Tanaka, Katsuhisa.

In: Applied Physics Letters, Vol. 92, No. 25, 251908, 04.07.2008.

Research output: Contribution to journalArticle

Akamatsu, Hirofumi ; Fujita, Koji ; Murai, Shunsuke ; Tanaka, Katsuhisa. / Magneto-optical properties of transparent divalent iron phosphate glasses. In: Applied Physics Letters. 2008 ; Vol. 92, No. 25.
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