Change search
ReferencesLink to record
Permanent link

Direct link
Intrinsic ionic screening of the ferroelectric polarization of KTP revealed by second-harmonic generation microscopy
University of Bordeaux.
University of Bordeaux.
University of Bordeaux.
university of Grenoble Alpes.
Show others and affiliations
2016 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 6, no 1, 137-145 p.Article in journal (Refereed) PublishedText
Abstract [en]

Mobile charges and lattice polarization interact in ferroelectric materials because of the Coulomb interaction between the mobile free charges and the fixed lattice dipoles. Using SHG microscopy, we have investigated this mutual screening in KTiOPO4, a ferroelectric/superionic single crystal in which the mobile charges are K$+$ ions. The ionic accumulation close to the crystal surfaces leads to orders of magnitude increase of SHG. This ionic space charge model is supported by the absence of such an effect in non-ionic conductor but ferroelectric BaTiO3, by its temperature dependence in KTiOPO4 and by its broad depletion at domain walls.

Place, publisher, year, edition, pages
Optical Society of America, 2016. Vol. 6, no 1, 137-145 p.
Keyword [en]
Ferroelectrics; Nonlinear optics, materials
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-179729DOI: 10.1364/OME.6.000137ISI: 000369242300016ScopusID: 2-s2.0-84953432996OAI: oai:DiVA.org:kth-179729DiVA: diva2:889180
Note

QC 20160112. QC 20160304

Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2016-03-04Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopusPublished version

Search in DiVA

By author/editor
Canalias, Carlota
By organisation
Laser Physics
In the same journal
Optical Materials Express
Atom and Molecular Physics and Optics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 209 hits
ReferencesLink to record
Permanent link

Direct link