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Transition in temperature scaling behaviors and super temperature stable polarization in BiScO 3 –PbZrO 3 –PbTiO 3 system
Author(s) -
Hu Querui,
Yang Ying,
Li Ling,
Wang Yiping,
Chen Lang,
Yuan Guoliang,
Zhang Shantao
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17074
Subject(s) - materials science , ferroelectricity , condensed matter physics , scaling , phase boundary , ceramic , polarization (electrochemistry) , exponent , hysteresis , ternary operation , piezoelectricity , transition temperature , mineralogy , analytical chemistry (journal) , phase (matter) , composite material , dielectric , mathematics , physics , chemistry , optoelectronics , superconductivity , geometry , philosophy , linguistics , quantum mechanics , chromatography , programming language , computer science
Temperature scaling of dynamic ferroelectric hysteresis for the morphotropic phase boundary (MPB) compositions in x BiScO 3 –(1‐ x ‐ y )PbZrO 3 – y PbTiO 3 ( x BS–(1‐ x ‐ y )PZ– y PT, 0.018 ≤ x ≤ 0.264) ternary system was systematically investigated. The power‐law relation was obtained for remanent polarization P r and temperature T , that is, P r ∝ T β . It is interesting to find that the power‐law exponent β could be modulated by BiScO 3 content x . With the increase of x from 0.018 to 0.264, β varies from −1.09398 to 2.44147. Transition of β from negative to positive produces in the vicinity of 0.054BS–0.476PZ–0.470PT ceramic. At this composition, the magnitude of β is very close to zero with value of only −0.01567, implying an almost temperature‐independent polarization characteristic of the ceramic. Comparing with the conventional PZT‐based piezoelectric ceramics that usually with negative exponent β , when x > 0.054, the x BS–(1‐ x ‐ y )PZ– y PT ceramics show positive β value, so that the ferroelectric polarization is enhanced with increasing temperature. Such a positive temperature dependence of ferro‐/piezoelectric property makes the ternary system a promising candidate for high‐temperature applications.