Investigation on growth defects in Pb(Zn1/3Nb2/3)O3-PbTiO3 crystals by Min Jin, Jiayue Xu, Minli Shi, and Shiji Fan

Crystal Research and Technology

Cryst. Res. Technol. 41, 1067 (2006) - Abstract -

Investigation on growth defects in Pb(Zn_1/3Nb_2/3)O₃-PbTiO₃ crystals

Min Jin, Jiayue Xu, Minli Shi, and Shiji Fan

Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Keywords	vertical Bridgman method, nucleation core, inclusion, particle, boundary
PACS	81.10.Dn, 81.70.Pg, 77.84.-s
DOI	10.1002/crat.200610723

Relaxor ferroelectric crystal (1-x)Pb(Zn_1/3Nb_2/3)O₃-xPbTiO₃ (PZNT) with x=0.07 (PZNT93/7) has been grown by the vertical Bridgman method from the high temperature solution of PZNT-PbO system. The growth defects, such as nucleation core, inclusions, boundaries and particles, were investigated by optical microscope and scanning electron microscope. Sub-structures were found in the flux inclusions and the lack of ZnO component in PZNT crystals was attributed to the existence of ZnO particles in the inclusions.

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