Jump to main content
Jump to site search

Issue 30, 2018
Previous Article Next Article

Enhanced temperature stability in the R–T phase boundary with dominating intrinsic contribution

Author affiliations

Abstract

In this study, 0.96KNNSx–0.01SZ–0.03BNZ ceramics (x = 0–0.08) were used as examples to illustrate the effects of phase boundaries on strain property and temperature stability. The addition of Sb5+ resulted in a rhombohedral–tetragonal (R–T) phase boundary at x = 0.05–0.07, as confirmed by temperature-dependent Raman spectra. In the R–T region, an improved piezoelectric constant (d33 = 390–440 pC N−1) and high unipolar strain (Suni = 0.14–0.15%) were observed due to the dominating intrinsic contribution. More importantly, a favorable temperature stability of Suni was observed in the ceramics with x = 0.05; for example, there was a slight variation of +5% to −13% when the temperature was increased from 20 °C to 180 °C. Through systematic investigations of composition and temperature-dependent strain, methods to improve Suni and consolidate its temperature stability in KNN-based ceramics were subsequently suggested. We believe that this study can promote the understanding and design of KNN-based ceramics with high strain and favorable temperature stability.

Graphical abstract: Enhanced temperature stability in the R–T phase boundary with dominating intrinsic contribution

Back to tab navigation

Publication details

The article was received on 07 May 2018, accepted on 05 Jul 2018 and first published on 05 Jul 2018


Article type: Paper
DOI: 10.1039/C8CP02891E
Citation: Phys. Chem. Chem. Phys., 2018,20, 20149-20159
  •   Request permissions

    Enhanced temperature stability in the R–T phase boundary with dominating intrinsic contribution

    X. Lv, J. Wu, J. Zhu and D. Xiao, Phys. Chem. Chem. Phys., 2018, 20, 20149
    DOI: 10.1039/C8CP02891E

Search articles by author

Spotlight

Advertisements