Fabrication of textured BNKLT ceramics by reactive templated grain growth using NBT templates

W. K. Tam, Kin Wing Kwok, J. T. Zeng, H. L.W. Chan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Textured Bi0.5Na0.35K0.1Li0.05TiO3(BNKLT) ceramics have been fabricated by a Reactive Templated Grain Growth (RTGG) method using plate-like Na0.5Bi0.5TiO3(NBT) templates. The NBT templates were synthesized from bismuth layer-structured ferroelectric Na0.5Bi4.5Ti4O15(NBiT) particles by the topochemical method. After reactively sintering at 1085°C for 12h, the ceramic textured with 20wt% NBT templates contains a large fraction of grains aligned with their a-axis normal to the sample surface, giving a Lotgering factor of 0.6. The piezoelectric properties were improved while depolarization temperature remained almost unchanged. The piezoelectric coefficient d33of the ceramic reaches a high value of 300 pC/N, while the electromechanical coupling coefficients kpand ktare 0.39 and 0.56, respectively.
Original languageEnglish
Title of host publication2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF
Pages670-672
Number of pages3
DOIs
Publication statusPublished - 1 Dec 2007
Event2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF - Nara-city, Japan
Duration: 27 May 200731 May 2007

Conference

Conference2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF
CountryJapan
CityNara-city
Period27/05/0731/05/07

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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