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Epitaxial growth and anisotropic dielectric properties of La-doped Bi 4Ti3O12 thin films

  • Kookmin University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

To investigate the anisotropic dielectric properties of layer-structured bismuth-based ferroelectrics along different crystal directions, we fabricate devices along different crystal orientations using highly c-axis oriented Bi3.25La0.75Ti3O12 (BLT) thin films on (001) LaAlO3 (LAO) substrates. Experimental results have shown that the dielectric properties of the BLT films are highly anisotropic along different crystal directions. The dielectric constants (IMHz at 300 K) are 358 and 160 along [100] and [110], respectively. Dielectric nonlinearity is also detected along these crystal directions. On the other hand, a much smaller dielectric constant and no detectable dielectric nonlinearity in a field range of 0-200 kV/cm are observed for films along [001] when c-axis oriented SRO is used as the bottom electrode.

Original languageEnglish
Title of host publicationAdvances in Nanomaterials and Processing - IUMRS - ICA - 2006 International Conference in Asia
PublisherTrans Tech Publications Ltd
Pages177-180
Number of pages4
EditionPART 1
ISBN (Print)3908451310, 9783908451310
DOIs
StatePublished - 2007
EventIUMRS International Conference in Asia 2006, IUMRS-ICA 2006 - Jeju, Korea, Republic of
Duration: Sep 10 2006Sep 14 2006

Publication series

NameSolid State Phenomena
NumberPART 1
Volume124-126
ISSN (Print)1012-0394

Conference

ConferenceIUMRS International Conference in Asia 2006, IUMRS-ICA 2006
Country/TerritoryKorea, Republic of
CityJeju
Period09/10/0609/14/06

Keywords

  • Anisotropic dielectric property
  • Crystal direction
  • Epitaxial growth

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