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Pyroelectric power generation with ferroelectrics (1-x)PMN-xPT

Author:
Kim, Juyoung  Yamanaka, Satoru  Nakajima, Akira  Katou, Takanori  Kim, Yoonho  Fukuda, Tatsuo  Yoshii, Kenji  Nishihata, Yasuo  Baba, Masaaki  Takeda, Masatoshi  Yamada, Noboru  Nakayama, Tadachika  Niihara, Koichi  Tanaka, Hirohisa  


Journal:
FERROELECTRICS


Issue Date:
2017


Abstract(summary):

A novel electrothermodynamic cycle based on temporal temperature variations (dT/dt); the pyroelectric effect was investigated for its potential role in the use of waste heat as renewable energy. Here, we present improved generating performance with relaxer ferroelectric ceramics ((1-x)Pb(Mg2/3Nb1/3)O-3-xPbTiO(3) (PMN-xPT)), which are well known for their strong dielectric and pyroelectric properties near the morphotropic phase boundary. The theoretical potential was evaluated using hysteresis loops, and the generating properties were analyzed in the laboratory using an engine dynamometer. The experiments yielded a value of 0.48mW/cm(3), which is 3times larger than that obtained previously, because of the high polarization properties.


Page:
92---99


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