Enhancement of dielectric constant and associated coupling of polarization behavior in thin film relaxor superlattices

M.H. Corbett, Robert Bowman, Marty Gregg, D.T. Foord

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Thin film capacitor structures in which the dielectric is composed of superlattices of the relaxors [0.2Pb(Zn1/3Nb2/3)O- 3-0.8BaTiO(3)] and Pb(Mg1/3Nb2/3)O-3 have been fabricated by pulsed laser deposition. Superlattice wavelength (Lambda) was varied between similar to3 and similar to 600 nm, and dielectric properties were investigated as a function of Lambda. Progressive enhancement of the dielectric constant was observed on decreasing Lambda, and, in contrast to previous work, this was not associated with the onset of Maxwell-Wagner behavior. Polarization measurements as a function of temperature suggested that the observed enhancement in dielectric constant was associated with the onset of a coupled response. The superlattice wavelength (Lambda =20 nm) at which coupled functional behavior became apparent is comparable to that found in literature for the onset of coupled structural behavior (between Lambda =5 nm and Lambda =10 nm). (C) 2001 American Institute of Physics.
Original languageEnglish
Pages (from-to)815-817
Number of pages3
JournalApplied Physics Letters
Volume79(6)
Issue number6
DOIs
Publication statusPublished - 06 Aug 2001

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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