Domain structures and piezoelectric properties of low-temperature sintered (Ba0.95Ca0.05)(Ti0.94Sn0.06)O3 ceramics with CuO additive

Yuan Sun, Yunfei Chang, Jie Wu, Xiaohui Wang, Shantao Zhang, Ruixue Wang, Bin Yang, Wenwu Cao

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

(Ba0.95Ca0.05)(Ti0.94Sn0.06)O3-x mol% CuO ceramics were fabricated to investigate their domain structures and piezoelectric properties. The CuO additive significantly improved the densification behavior of the ceramics, resulting in a reduced sintering temperature by ∼150 °C. Increasing x shifted the orthorhombic-tetragonal phase transition towards lower temperatures, and caused the specific ratio of tetragonal to orthorhombic phase to increase at room temperature. The herringbone domain patterns became much simpler and their number substantially decreased. The watermarks and parallel strips are the dominant domain configuration in ceramics with x=0.50 which show the optimum piezoelectric properties: d33 ∼ 516 pC/N, d33∗ ∼ 996 pC/N, kp ∼ 0.42, and Qm ∼ 352. The underlying physical mechanisms for the enhanced piezoelectricity in the CuO-doped ceramics were discussed.

Original languageEnglish (US)
Pages (from-to)128-131
Number of pages4
JournalMaterials Letters
Volume177
DOIs
StatePublished - Aug 15 2016

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this