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Heat capacity of the 0.7PbNi1/3Nb2/3O3-0.3PbTiO3 ferroelectric ceramics |
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| Authors: | S N Kallaev Z M Omarov R G Mitarov K Bormanis |
| Institution: | 1. Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, ul. Yaragskogo 94, Makhachkala, 367003, Dagestan, Russia 2. Dagestan State Technical University, pr. Imama Shamilya 70, Makhachkala, 367015, Dagestan, Russia 3. Institute of Solid State Physics, University of Latvia, bulv. Raina 19, Riga, LV-1063, Latvia |
| Abstract: | The temperature dependence of the heat capacity of the 0.7PbNi1/3Nb2/3O3-0.3PbTiO3 compound has been studied in the temperature range 120?C800 K. The temperature dependence of the heat capacity C p has two diffuse anomalies in the temperature ranges 250?C450 K and 450?C650 K and a ?? anomaly at temperatures T ?? 225 K. The results are discussed with inclusion of the dielectric and structural data. |
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