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日本結晶学会誌
Vol. 55 (2013) No. 5 p. 278-284

記事言語:

http://doi.org/10.5940/jcrsj.55.278

最近の研究から

Polarization rotation is the key for interpretation of the piezoelectricity in Pb(Ti1-xZrx)O3(PZT)and other piezoelectric ceramics. We found the monoclinic phase in BiCo1-xFexO3x~0.7)that is isostructural with the low temperature phase of PZT at the morphotropic phase boundary(MPB). Precise structural analysis by electron diffraction and powder synchrotron X-ray diffraction revealed that the monoclinic perovskite BiCo1-xFexO3 exhibits Cm symmetry and showed polarization rotation as functions of composition and temperature. The second order structural transition from tetragonal to monoclinic structures was accompanied by a rotation of the polarization vector from the[001]to[111]directions of a pseudo cubic cell.

Copyright © 2013 日本結晶学会

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