Calorimetric measurement of the energy involved in the setting up of electrical polarisation in PLZT-type material
| Autor: | G. Thouy, L. Gille, J. Paletto, J M Sarreau |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
Phase transition
Materials science Doping General Engineering Analytical chemistry General Physics and Astronomy Calorimeter Condensed Matter::Materials Science Hysteresis Electric field visual_art visual_art.visual_art_medium Polar General Materials Science Ceramic Instrumentation Energy (signal processing) |
| Zdroj: | Journal of Physics E: Scientific Instruments. 11:1113-1116 |
| ISSN: | 0022-3735 |
| DOI: | 10.1088/0022-3735/11/11/010 |
| Popis: | To evaluate the energy involved in the setting up and switching of electrical polarisation in polar materials, a method, based on the comparison of the energy graphically plotted on an hysteresis cycle with that measured simultaneously in a differential calorimeter, was tested with ceramic samples of PLZT type. These measurements confirmed the existence of an antiferroelectric-ferroelectric first-order transition, induced by the application of an electric field at room temperature on a PLZT-type compound (5% La, 85% Zr, 15% Ti) and on a PZT type (94% Zr, 6% Ti, doped with 1% ThO2), both materials exhibiting inverted phase transitions with temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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