Latent heat study of phase transition in Ba0.73Sr0.27TiO3 induced by electric field
We have developed a modified power-compensation DSC to evaluate the electrocaloric properties of ferroelectrics. With this apparatus, latent heat of electric-field-induced phase transition in Bao.73Sro.27TiO3 (BST) ferroelectric ceramics has been investigated in detail. It varies with temperature an...
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| Veröffentlicht in: | Journal of Thermal Analysis and Calorimetry 2005-07, Vol.81 (1), p.41-44 |
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| container_title | Journal of Thermal Analysis and Calorimetry |
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| creator | LIN, G. C XIONG, X. M ZHANG, J. X WEI, Q |
| description | We have developed a modified power-compensation DSC to evaluate the electrocaloric properties of ferroelectrics. With this apparatus, latent heat of electric-field-induced phase transition in Bao.73Sro.27TiO3 (BST) ferroelectric ceramics has been investigated in detail. It varies with temperature and reaches its climax at 25DGC, close to the ferroelectric-paraelectric phase transition temperature, when induced by the same electric field of 15 kV cm -1. The theoretical saturated endothermicity induced by enough high electric field at 25DGC is expected to 0.59 J g-1, which is 84% of the total phase transition latent heat of BST. At last the origins of difference between exothermicity and endothermicity are discussed. |
| doi_str_mv | 10.1007/s10973-005-0742-2 |
| format | Article |
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At last the origins of difference between exothermicity and endothermicity are discussed.</description><subject>Chemical thermodynamics</subject><subject>Chemistry</subject><subject>Elements, mineral and organic compounds</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Thermodynamic properties</subject><issn>1388-6150</issn><issn>1588-2926</issn><issn>1572-8943</issn><issn>0368-4466</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNpFkE9LAzEUxIMoWKsfwFsuetv6kmw2m6MWq0Khh9ZzSPOHRra7Ncke-u1NacHTGx4zw_BD6JHAjACIl0RAClYB8ApETSt6hSaEt21FJW2ui2ZFN4TDLbpL6QcApAQyQeulzq7PeOd0ximP9ogHjw87nRzOUfcp5DD0OPT4TcNMsHWEGRWbsGLlZ0fjLN4eseucyTEY7IPr7D268bpL7uFyp-h78b6Zf1bL1cfX_HVZGQY0lzXEeaktAQHGM66JqDkRWhhJoSXSc7altAYKhOqW-rq4BW-9tY3d1l6wKXo-9x7i8Du6lNU-JOO6TvduGJOiLWOyllCM5Gw0cUgpOq8OMex1PCoC6oRPnfGpgk-d8ClaMk-Xcp2M7nxhYUL6Dwrg0PKG_QGn8G1U</recordid><startdate>20050701</startdate><enddate>20050701</enddate><creator>LIN, G. 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The theoretical saturated endothermicity induced by enough high electric field at 25DGC is expected to 0.59 J g-1, which is 84% of the total phase transition latent heat of BST. At last the origins of difference between exothermicity and endothermicity are discussed.</abstract><cop>Dordrecht</cop><pub>Springer</pub><doi>10.1007/s10973-005-0742-2</doi><tpages>4</tpages></addata></record> |
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| subjects | Chemical thermodynamics Chemistry Elements, mineral and organic compounds Exact sciences and technology General and physical chemistry Thermodynamic properties |
| title | Latent heat study of phase transition in Ba0.73Sr0.27TiO3 induced by electric field |
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