Charged domain boundaries stabilized by translational symmetry breaking in the hybrid improper ferroelectric Ca3–x Sr x Ti2O7

Charged domain boundaries stabilized by translational symmetry breaking in the hybrid improper ferroelectric Ca3–x Sr x Ti2O7

Charged domain walls in ferroelectrics are interesting as they may enhance electrical conductivity. Here, atomic-resolution imaging of Ca3–xSrxTi2O7 reveals that charged domain boundaries are stabilized by an out-of-phase translational shift of crystallographic domains and that Sr ions accumulate at...

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Bibliographic Details
Main Authors: Hiroshi Nakajima, Kosuke Kurushima, Shinya Mine, Hirofumi Tsukasaki, Masaya Matsuoka, Bin Gao, Sang-Wook Cheong, Shigeo Mori
Format: article
Language:EN
Published: Nature Portfolio 2021
Subjects:
Materials of engineering and construction. Mechanics of materials
TA401-492
Online Access:https://doaj.org/article/a376742ec2cd4be9b6ea23b3a04f5081
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Summary:Charged domain walls in ferroelectrics are interesting as they may enhance electrical conductivity. Here, atomic-resolution imaging of Ca3–xSrxTi2O7 reveals that charged domain boundaries are stabilized by an out-of-phase translational shift of crystallographic domains and that Sr ions accumulate at the boundaries.

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