Coherent domain growth under photo-excitation in a Prussian blue analogue

M. Hanawa, Y. Moritomo, A. Kuriki, J. Tateishi, K. Kato, M. Takata, M. Sakata

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We have investigated the structural properties of the photo-induced metastable phase of a Prussian blue analogue (Na0.42Co[Fe(CN) 6]0.78·4.64H2O), which shows the photo-magnetization phenomenon, as revealed by means of the high angle-resolved synchrotron-radiation X-ray powder diffraction technique. We have found that (1) the structural domain size is larger than the quenched high-temperature phase and (2) the lattice constant a (= 10.287(1) Å) is larger than that of the quenched phase (a = 10.187(3) Å). These observations indicate that photo-excitation coherently increases the size of the photo-induced metastable region even at low temperature (91 K ≪ Tc).

Original languageEnglish
Pages (from-to)987-990
Number of pages4
JournalJournal of the Physical Society of Japan
Issue number5
Publication statusPublished - 2003 May


  • Crystal growth
  • Crystal structure
  • Metastable phase
  • Photo-induced magnetization
  • Powder X-ray diffraction
  • Structural domain
  • Synchrotron radiation


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