Modifying Temperature Stability of (K,Na)NbO3\n Ceramics through Phase Boundary

Xiang Lv, Jiagang Wu, Dingquan Xiao, Jianguo Zhu, Junwei Zhang, Xixiang Zhang

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

(0.99-x)(K0.5Na0.5)(Nb0.965Sb0.035)O3-0.01SrZrO3-x(Bi0.5Na0.5)ZrO3 ceramics are chosen as an example to illustrate the effects of phase boundaries on strain. Temperature-dependent dielectric permittivity and convergent beam electron diffraction patterns confirm the multiphase coexistence of rhombohedral, orthorhombic, and tetragonal phases in the ceramics with x = 0.03–0.04. Intriguingly, the ceramics with x = 0.03 display improved temperature stability in strain, e.g., a high retention (≈95%) of unipolar strain at 180 °C and low variation of 24% at 20–180 °C. A mode is proposed to show how to effectively tailor the strain and consolidate its temperature stability in potassium sodium niobate-based ceramics.
Original languageEnglish (US)
Pages (from-to)1800205
JournalAdvanced Electronic Materials
Volume4
Issue number9
DOIs
StatePublished - Jun 28 2018

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