Polar phonons in relaxor ferroelectric 0.2PSN-0.4PMN-0.4PZN
作者： J. Macutkevič , S. Kamba , A. Pashkin , J. Banys , K. Bormanis
DOI: 10.12693/APHYSPOLA.113.879
关键词:
摘要: Relaxor ferroelectrics 0-2PbSc(1/2)Nb(1/2)O(3) - 0.4PbMg(1/3)Nb(2/3)O(3)-0.4PbZn(1/3)Nb(2/3)O(3) ceramics were studied by means of the Fourier transform infrared reflection and THz transmission spectroscopy in temperature range 20-500 K. On heating from low temperatures, A(1) component strongly split TO1 mode softens towards Burns temperature, but softening ceases near 400 K, which could be a signature polar cluster percolation temperature.
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