Structural coherence and ferroelectricity decay in submicron- and nano-sized perovskites

Petkov, V. (author)

Buscaglia, V. (author)

Buscaglia, M. T. (author)

Zhao, Zhe (author): Stockholms universitet,Avdelningen för materialkemi,Department of Physical Inorganic and Structural Chemistry, Stockholm University

Ren, Y. (author)

(creator_code:org_t)

2008
2008
English.
In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 78:5, s. 54107-

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; https://urn.kb.se/re...; show less...

Abstract Subject headings

Understanding the loss of ferroelectricity in submicron- and nano-sized perovskites is an issue that has been debated for decades. Here we report results from a high-energy x-ray diffraction (XRD) study on a prime example of the perovskite's family, BaTiO3 ceramics with a grain size ranging from 1200 to 5 nm. We find that the loss of ferroelectricity in submicron- and nano-sized BaTiO3 has an intrinsic origin related to the increased atomic positional disorder in spatially confined physical systems. Our results imply that no particular critical size at which ferroelectricity in BaTO3, in particular, and perovskites, in general, is completely lost exists. Rather it weakens exponentially with the decreasing of their physical size. Smart technological solutions are needed to bring it back.

By the author/editor: Petkov, V.; Buscaglia, V.; Buscaglia, M. T.; Zhao, Zhe; Ren, Y.

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Ceramics

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.