Temperature-dependent Raman scattering of KTa1-xNbxO3 thin films

  title={Temperature-dependent Raman scattering of KTa1-xNbxO3 thin films},
  author={Ausrine Bartasyte and Jens Kreisel and Wenxi Peng and Maryline Guilloux-Viry},
  journal={arXiv: Materials Science},
We report a Raman scattering investigation of KTa1-xNbxO3 (x = 0.35, 0.5) thin films deposited on MgO and LaAlO3 as a function of temperature. The observed phase sequence in the range from 90 K to 720 K is similar to the structural phase transitions of the end-member material KNbO3. Although similar in the phase sequence, the actual temperatures observed for phase transition temperatures are significantly different from those observed in the literature for bulk samples. Namely, the tetragonal… 
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