Raman Scattering Spectra of Rb2ZnCl4

  • Wada Mitsuo
    Synthetic Crystal Research Laboratory, Faculty of Engineering, Nagoya University
  • Sawada Akikatsu
    Synthetic Crystal Research Laboratory, Faculty of Engineering, Nagoya University
  • Ishibashi Yoshihiro
    Synthetic Crystal Research Laboratory, Faculty of Engineering, Nagoya University

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タイトル別名
  • Raman Scattering Spectra of Rb<SUB>2</SUB>ZnCl<SUB>4</SUB>

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The Raman scattering spectra of Rb2ZnCl4 single crystals were measured over the temperature range covering the successive phase transitions at T1=302 K and T2=189 K. The low-lying mode, whose frequency decreases as the prototypic-incommensurate phase transition point T1 is approached from below, has been observed for the c(aa)b scattering orientation as well as for the a(cc)b orientation, and is assigned to the amplitude mode. The results obtained are discussed in connection with the incommensurate phase transition.

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