DETERMINATION OF STRUCTURE AND DIELETRIC, ELASTIC AND PIEZOELECTRIC COEFFICIENTS IN FERROELECTRIC SINGLE CRYSTALS PbxBa1-xNb2O6 AND Li, Na-DOPED PbxBa1-xBb2O6 | Zendy

Yuhuan Xu | Zendy; Wang Hong | Zendy; Huanchu Chen | Zendy

Open Access

DETERMINATION OF STRUCTURE AND DIELETRIC, ELASTIC AND PIEZOELECTRIC COEFFICIENTS IN FERROELECTRIC SINGLE CRYSTALS PbxBa1-xNb2O6 AND Li, Na-DOPED PbxBa1-xBb2O6

Author(s) -

Yuhuan Xu,

Wang Hong,

Huanchu Chen

Publication year - 1988

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.37.1350

Subject(s) - materials science , ferroelectricity , piezoelectricity , condensed matter physics , doping , single crystal , nuclear magnetic resonance , physics , composite material , optoelectronics , dielectric

Two ferroelectric single crystals Pb0.37Ba0.63 Nb2O6 and Pb0.30Ba0.533Na0.306Li0.028 Nb2O6,pulled from melt by Czochralski technique, have been studied. By X-ray diffraction, it has been determined that both of two crystals belong to the tetragonal system with lattice parameters a = 12.493 ?, c = 3.984 ? for PBN, and a = 12.493 ?, c=3.970 ? for Li, Na-doped PBN. All of the dielectric, elastic, and piezoelectric coefficients of the two crystals have been measured. The results show that PBN crystal possesses good piezoelectric character with d15≈108×10-12C/N. This crystal could be a promising material for piezoelectric transducers operating in the shear mode. The dielectric constants are reduced, while the Tc is enhanced obviously in PBN doped by Li and Na Ions.

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