| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1476410 | Journal of the European Ceramic Society | 2007 | 5 Pages |
Abstract
Temperature dependence of the optic phonons in 0.4PbMg1/3Nb2/3O3-0.3PbSc1/2Nb1/2O3-0.3PbZn1/3Nb2/3O3 (0.4PMN-0.3PSN-0.3PZN) ceramics were studied by means of FTIR reflection and THz transmission spectroscopy in the temperature range of â253.15 to 226.85 °C. On heating from low temperatures, the A1 component of the strongly split TO1 mode softens towards the Burns temperature, but the softening ceases near 126.85 °C which could be a signature of polar cluster percolation temperature. Surprisingly, the TO2 mode also softens on heating and follows the Cochran law with extrapolated critical temperature close to the melting point.
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Authors
J. Macutkevic, S. Kamba, J. Banys, A. Pashkin, K. Bormanis, A. Sternberg,