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High‐temperature piezoelectric properties of 0‐3 type CaBi 4 Ti 4 O 15 : x wt%BiFeO 3 composites
Author(s) -
Hussain Ahmad,
Qaiser Muhammad Adnan,
Zhang Ji,
Zhang ShanTao,
Wang Yiping,
Yang Ying,
Liu Zhiguo,
Yuan Guoliang
Publication year - 2017
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.14879
Subject(s) - materials science , composite number , dielectric , piezoelectricity , composite material , ceramic , polarization (electrochemistry) , optoelectronics , chemistry
The 0‐3 type CaBi 4 Ti 4 O 15 :30 wt%BiFeO 3 composite shows much better high‐temperature piezoelectric properties than the single‐phase CaBi 4 Ti 4 O 15 or BiFeO 3 ceramics. The composite with 0‐3 type connectivity exhibits a high density of 7.01 g/cm 3 , a saturated polarization of 21.5 μC/cm 2 and an enhanced piezoelectric d 33 of 25 pC/N. After the poled composite was annealed at 600°C, its d 33 is 21 pC/N at room temperature. Resistance of the composite decreases slowly from 10 9 ohm at 20°C to ~10 5 ohm at 500°C. Furthermore, the poled composite shows strong radial and thickness dielectric resonances at 20°C‐500°C.