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Enhanced ferroelectric and piezoelectric responses of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 ceramics by Tm3+ amphoteric substitution.
- Source :
-
Materials Chemistry & Physics . Sep2020, Vol. 252, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- The influences of Tm3+ doping on the microstructure and electric properties of (Ba 0.85 Ca 0.15)(Zr 0.1 Ti 0.9)O 3 - x mol%Tm 2 O 3 (BCZT- x %Tm) ceramics fabricated by a solid-state method have been studied. BCZT ceramics was orthorhombic phase, and BCZT- x %Tm (x = 0.3–1) ceramics exhibited the coexistence of orthorhombic and tetragonal phases. The correlation of crystal structure and electric properties confirmed that the substitution position of Tm3+ with amphoteric characteristics was related to Tm3+ content. Especially for BCZT-0.5%Tm ceramics, the obvious amphoteric substitution for both A- and B-sites cations of Tm3+ resulted in the formation of defect dipole. The electric properties of BCZT- x %Tm ceramics were dependent on the phase structure, defects and grain size caused by the introduction of Tm3+, and the relevant defect chemical mechanism was illuminated. The enhanced piezoelectric responses (d 33 = 523 pC/N and d 33 * = 645 p.m./V) were achieved in BCZT - 0.5%Tm ceramics, and these findings have essential significance in developing high performance lead-free piezoelectric materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02540584
- Volume :
- 252
- Database :
- Academic Search Index
- Journal :
- Materials Chemistry & Physics
- Publication Type :
- Academic Journal
- Accession number :
- 145320744
- Full Text :
- https://doi.org/10.1016/j.matchemphys.2020.123242