Studies of periodic ferroelectric domains in KTiOPO4 using high-resolution x-ray scattering and diffraction imaging
UNSPECIFIED. (1999) Studies of periodic ferroelectric domains in KTiOPO4 using high-resolution x-ray scattering and diffraction imaging. PHYSICAL REVIEW B, 59 (22). pp. 14259-14264. ISSN 0163-1829Full text not available from this repository.
A periodically domain-inverted KTiOPO4 crystal, in which inverted ferroelectric domains were produced by electric-field poling, has been studied using high-resolution x-ray scattering and diffraction imaging techniques. The degree of perfection of domain inversion as well as the periodic structure has been revealed in high-spatial-resolution images, and the periodic contrast is shown to arise largely from lattice distortions produced in the poled regions. The q(parallel to) dependence of intensity scattered from the domain-inverted structure can be described by a two-component line shape, one with a sharp nearly-pure-Gaussian line, the other with a broad pseudo-voigt-function profile. A high-angular-resolution method has been combined to elucidate the origin of the two-component profile. The diffuse scattering of the crystal truncation rod along q(perpendicular to) is observed to follow a power law q(perpendicular to)(-gamma) with gamma similar to 2.29 +/- 0.03 after poling compared with an average value of 2.05 +/- 0.03 before poling. Discussions of the electric-field poling and its consequence for the domain-inverted structure are presented in terms of the results of x-ray measurements. [S0163-1829(99)09921-X].
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||PHYSICAL REVIEW B|
|Publisher:||AMERICAN PHYSICAL SOC|
|Date:||1 June 1999|
|Number of Pages:||6|
|Page Range:||pp. 14259-14264|
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