Atomic-scale study of electric dipoles near charged and uncharged domain walls in ferroelectric films.

Atomic-scale study of electric dipoles near charged and uncharged domain walls in ferroelectric films. Research Abstract Details 

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Atomic-scale study of electric dipoles near charged and uncharged domain walls in ferroelectric films. Abstract Text:

Chun-Lin Jia,Shao-Bo Mi,Knut Urban,Ionela Vrejoiu,Marin Alexe,Dietrich Hesse,Chun-Lin Jia,Shao-Bo Mi,Knut Urban,Ionela Vrejoiu,Marin Alexe,Dietrich Hesse,Chun-Lin Jia,Shao-Bo Mi,Knut Urban,Ionela Vrejoiu,Marin Alexe,Dietrich Hesse,

Ferroelectrics are materials exhibiting spontaneous electric polarization due to dipoles formed by displacements of charged ions inside the crystal unit cell. Their exceptional properties are exploited in a variety of microelectronic applications. As ferroelectricity is strongly influenced by surfaces, interfaces and domain boundaries, there is great interest in exploring how the local atomic structure affects the electric properties. Here, using the negative spherical-aberration imaging technique in an aberration-corrected transmission electron microscope, we investigate the cation-oxygen dipoles near 180( composite function) domain walls in epitaxial PbZr(0.2)Ti(0.8)O(3) thin films on the atomic scale. The width and dipole distortion across a transversal wall and a longitudinal wall are measured, and on this basis the local polarization is calculated. For the first time, a large difference in atomic details between charged and uncharged domain walls is reported.

Atomic-scale study of electric dipoles near charged and uncharged domain walls in ferroelectric films. Publishing Authors By Initials

CL Jia,SB Mi,K Urban,I Vrejoiu,M Alexe,D Hesse,CL Jia,SB Mi,K Urban,I Vrejoiu,M Alexe,D Hesse,CL Jia,SB Mi,K Urban,I Vrejoiu,M Alexe,D Hesse,

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Atomic-scale study of electric dipoles near charged and uncharged domain walls in ferroelectric films. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Nature materials

VOLUME: 7

Page Numbers: 57-61

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ISSN: 1476-1122

DAY: 9

MONTH: 12

YEAR: 2007

Atomic-scale study of electric dipoles near charged and uncharged domain walls in ferroelectric films. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Atomic-scale study of electric dipoles near charged and uncharged domain walls in ferroelectric films.

AFFILIATION: Institute of Solid State Research and Ernst Ruska Centre for Microscopy and Spectroscopy with Electrons, Research Centre Jülich, D-52425 Jülich, Germany.

Country: England

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MEDLINETA: Nat Mater

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