Cs3BiCl6 : Un compose ferroelastique presentant une polarisation remanente a temperature ambiante |
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| Authors: | R Von Der Mühll J Ravez P Hagenmuller P Barbier M Drache G Mairesse |
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| Institution: | 1. Laboratoire de Chimie du Solide du CNRS, Université de BORDEAUX I, 351, cours de la Libération, 33405 Talence Cedex, France;2. Laboratoire de Cristallochimie et Physicochimie du Solide, Université des Sciences et Techniques de Lille, 59655 Villeneuve d''Ascq, France |
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| Abstract: | X-ray diffraction, calorimetric, dielectric and thermocurrent measurements have been carried out on Cs3BiCl6 ceramic samples. Three phase transitions have been detected at T1 = 395 K, T2 = 684 K and T3 = 727 K. The T3 transition is of ferroelastic-paraelastic type. The low temperature phase is characterized by remanent polarization. The depolarization current results probably from charge traps in potential minima which disappear at rising temperature. |
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