Ferro electriclike and pyroelectric behavior of CaCu3Ti4O12 ceramics
Data(s) |
2007
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Resumo |
A ferroelectriclike hysteresis loop was obtained at room temperature for CaCu3Ti4O12 (CCTO) ceramic. The remnant polarization and coercive field for 1100 °C/5 h sintered CaCu3Ti4O12 ceramics were 0.063 μC/cm2 and 195 V/cm, respectively. Remnant polarization increased while the coercive field decreased with increase in sintering temperature/duration, implying that these were microstructural dependent. The observation of the hysteresis loop for CCTO ceramic was corroborated by its pyroelectric behavior, and the pyroelectric current at room temperature was −0.0028 nA. These findings were attributed to the presence of mixed-valent Ti ions, apart from off center displacement of Ti ions in TiO6 octahedra. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/43019/1/Ferroelectriclike_and_pyroelectric.pdf Prakash, Shri B and Varma, KBR (2007) Ferro electriclike and pyroelectric behavior of CaCu3Ti4O12 ceramics. In: Applied Physics Letters, 90 (8). 082903-082903. |
Publicador |
American Institute of Physics |
Relação |
http://apl.aip.org/applab/v90/i8/p082903_s1 http://eprints.iisc.ernet.in/43019/ |
Palavras-Chave | #Materials Research Centre |
Tipo |
Journal Article PeerReviewed |