Photochromism enhancement in reduced tridymite BaMgSiO4 by Fe-doping

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  • AKIYAMA Morito
    Measurement Solution Research Center, National Institute of Advanced Industrial Science and Technology
  • YAMADA Hiroshi
    Measurement Solution Research Center, National Institute of Advanced Industrial Science and Technology
  • SAKAI Kazufumi
    Measurement Solution Research Center, National Institute of Advanced Industrial Science and Technology

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We have investigated the influence of 38 kinds of metal ions on photochromism in BaMgSiO4 (BMS). We have found that the doped Fe ions are the most effective to enhance the photochromism. The Fe-doped BMS shows great sensitivity to blue light (wavelength λ = 405 nm) and turns bright pink. The colored Fe-doped BMS is bleached by green light (λ = 532 nm) irradiation. The coloration-bleaching process is repeatable. The color density of the photochromism depends on the wavelength of irradiation lights. We think that the photochromism enhancement is due to the electron deeper traps formed by the doped Fe ions.

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