Diffuse x-ray scattering in perovskite ferroelectrics

B. D. Chapman; E. A. Stern; S. W. Han; J. O. Cross; G. T. Seidler; V. Gavrilyatchenko; R. V. Vedrinskii; V. L. Kraizman

doi:10.1103/physrevb.71.020102

Diffuse x-ray scattering in perovskite ferroelectrics

B. D. Chapman, E. A. Stern, S. W. Han, J. O. Cross, G. T. Seidler, V. Gavrilyatchenko, R. V. Vedrinskii, V. L. Kraizman

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Abstract

Diffuse x-ray scattering measurements on the cubic paraelectric phase of single-crystal PbTiO ₃ are presented. No diffuse scattering sheets are found, in contrast to sheets observed in the cubic paraelectric phases of BaTiO ₃ and KNbO ₃. A quantitative analysis of the diffuse scattering indicates that the soft-mode branch contribution to sheets is negligible in all three ferroelectric perovskites. Differences in the diffuse scattering are explained by differences in the disordering of the local displacements, thus resolving a long-standing controversy.

Original language	English
Article number	020102
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	71
Issue number	2
DOIs	https://doi.org/10.1103/physrevb.71.020102
State	Published - Jan 2005
Externally published	Yes

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abstract = "Diffuse x-ray scattering measurements on the cubic paraelectric phase of single-crystal PbTiO 3 are presented. No diffuse scattering sheets are found, in contrast to sheets observed in the cubic paraelectric phases of BaTiO 3 and KNbO 3. A quantitative analysis of the diffuse scattering indicates that the soft-mode branch contribution to sheets is negligible in all three ferroelectric perovskites. Differences in the diffuse scattering are explained by differences in the disordering of the local displacements, thus resolving a long-standing controversy.",

author = "Chapman, {B. D.} and Stern, {E. A.} and Han, {S. W.} and Cross, {J. O.} and Seidler, {G. T.} and V. Gavrilyatchenko and Vedrinskii, {R. V.} and Kraizman, {V. L.}",

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AU - Stern, E. A.

AU - Han, S. W.

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AU - Seidler, G. T.

AU - Gavrilyatchenko, V.

AU - Vedrinskii, R. V.

AU - Kraizman, V. L.

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N2 - Diffuse x-ray scattering measurements on the cubic paraelectric phase of single-crystal PbTiO 3 are presented. No diffuse scattering sheets are found, in contrast to sheets observed in the cubic paraelectric phases of BaTiO 3 and KNbO 3. A quantitative analysis of the diffuse scattering indicates that the soft-mode branch contribution to sheets is negligible in all three ferroelectric perovskites. Differences in the diffuse scattering are explained by differences in the disordering of the local displacements, thus resolving a long-standing controversy.

AB - Diffuse x-ray scattering measurements on the cubic paraelectric phase of single-crystal PbTiO 3 are presented. No diffuse scattering sheets are found, in contrast to sheets observed in the cubic paraelectric phases of BaTiO 3 and KNbO 3. A quantitative analysis of the diffuse scattering indicates that the soft-mode branch contribution to sheets is negligible in all three ferroelectric perovskites. Differences in the diffuse scattering are explained by differences in the disordering of the local displacements, thus resolving a long-standing controversy.

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Diffuse x-ray scattering in perovskite ferroelectrics

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