ANALYSIS OF THE INTEGRATED INTENSITY OF THE CENTRAL PEAKS CALCULATED AS A FUNCTION OF TEMPERATURE IN THE FERROELECTRIC PHASE OF LITHIUM TANTALATE
作者: Ali Kiraci Hamit Yurtseven
刊名: Thermal Science, 2018, Vol.22 (Supplement), pp.S221-S227
来源数据库: Society for Thermal Engineers of Serbia
DOI: https://doi.org/10.2298/TSCI170614289K
关键词: Integrated intensityOrder parameterDamping constantRelaxation timeLiTaO3
原始语种摘要: The integrated intensity of the central peak is calculated as a function of temperature in the ferroelectric phase (T < TC) of nearly stoichiometric LiTaO3. This calculation is performed using the temperature dependence of the order parameter obtained from the mean field theory at temperatures lower than the transition temperature TC (TC = 963 K) of this crystal. The calculated values of the order parameter (squared) are fitted to the integrated intensity of the central peaks as observed from the Raman and Brillouin scattering experiments as reported in the literature in the ferroelectric phase of nearly stoichiometric LiTaO3. Our results are in good agreement with the observed behavior of LiTaO3 crystal. Because of the applications of LiTaO3 in several academic disciplines including the...
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关键词翻译
关键词翻译
  • crystal 晶体
  • intensity 强度
  • parameter 参数
  • calculated 计算的
  • dependence 从属
  • temperature 温度
  • calculation 计算
  • stoichiometric 化学计量的
  • thermal 热的
  • ferroelectric 铁电体