Effect of crystallographic orientation in textured Ba0.92Ca0.08TiO3 piezoelectric ceramics
2014 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 116, no 13, 134102- p.Article in journal (Refereed) Published
Strongly textured lead-free Ba0.92Ca0.08TiO3 piezoelectric ceramics were fabricated by tape casting and templated grain growth. Dense ceramics with both favorable < 100 > and unfavorable < 111 > texture were successfully prepared. Enhanced piezoelectric performance was demonstrated for ceramics with < 100 > texture, in line with the predictions based on reported piezoelectric coefficients of tetragonal BaTiO3. Due to the expanded tetragonal range through Ca-substitution, < 100 > texture is favorable over a wide temperature range. The < 100 > texture also results in the enhanced piezoelectric performance being temperature-independent. In addition to engineering of stable, high-performance lead-free piezoelectric ceramics, this study has demonstrated that consideration of the extender/rotator nature of piezoelectric properties is imperative for improving the piezoelectric response through texturing.
Place, publisher, year, edition, pages
2014. Vol. 116, no 13, 134102- p.
IdentifiersURN: urn:nbn:se:su:diva-109978DOI: 10.1063/1.4896840ISI: 000343872500041OAI: oai:DiVA.org:su-109978DiVA: diva2:768702