Flexopiezoelectricity at ferroelastic domain walls in WO3 films

Observation of a strain-gradient-induced piezoresponse at domain walls remains a challenge. Here, the authors find the piezoelectric response to be enhanced in the ferroelastic domain walls of centrosymmetric tungsten trioxide thin films due to a large strain gradient over a wide width of the wall.

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Autores principales: Shinhee Yun, Kyung Song, Kanghyun Chu, Soo-Yoon Hwang, Gi-Yeop Kim, Jeongdae Seo, Chang-Su Woo, Si-Young Choi, Chan-Ho Yang
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2020
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Acceso en línea:https://doaj.org/article/a40e15cd37e44a67b81b40e3e790dfb5
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Sumario:Observation of a strain-gradient-induced piezoresponse at domain walls remains a challenge. Here, the authors find the piezoelectric response to be enhanced in the ferroelastic domain walls of centrosymmetric tungsten trioxide thin films due to a large strain gradient over a wide width of the wall.