Open AccessINVESTIGATION OF (1-x)PMN-xPT FERROELECTRIC REFRIGERATION CERAMICS
Author(s) -
Dingquan Xiao,
Wang Yong-Chuan,
Zhang Rong-Long,
Peng Shang-Qiang,
Bin Yang,
Jianguo Zhu,
Wen Zhang,
Hong-Tao Wang
Publication year - 1998
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.1754
Subject(s) - ferroelectricity , materials science , electrocaloric effect , refrigeration , ceramic , phase transition , dielectric , ferroelectric ceramics , condensed matter physics , phase (matter) , electric field , thermodynamics , composite material , optoelectronics , physics , quantum mechanics
In recent years, the electrocaloric effect (abbr. ECE) of dielectrics has attracted attention for ferroelectric refrigerating application. The fundamentals of ferroelectric refrigeration and the expressions of three types of ECEs, i.e., linear, quadratic and field-induced first-order phase transition electrocaloric effects, are presented in this paper. The ECE properties of (1-x)PbMg1/3Nb2/3O3-xPbTiO3abbr. (1-x)PMN-xPT ferroelectric ceramics(x=0.08, 0.10, and 0.25 respectively) at room temperature were measured and analyzed. It is found that the large electrocaloric effect of (1-x)PMN-xPT ferroelectric ceramics about room temperature is due to the electric-induced first-order phase transition and linear electrocaloric effects, and these ceramics could be used in ferroelectric multi-stage refrigeration.