THE INFLUENCE OF MICROSTRUCTURE ON THE ELECTRONIC-PROPERTIES OF THIN-FILMS OF BARIUM STRONTIUM TITANIUM-OXIDE COMPOSITES

Authors
COLE MW SENGUPTA S STOWELL S HUBBARD CW NGO EH
Citation
Mw. Cole et al., THE INFLUENCE OF MICROSTRUCTURE ON THE ELECTRONIC-PROPERTIES OF THIN-FILMS OF BARIUM STRONTIUM TITANIUM-OXIDE COMPOSITES, Integrated ferroelectrics (Print), 21(1-4), 1998, pp. 469-473
Citations number
11
Categorie Soggetti
Physics, Condensed Matter","Engineering, Eletrical & Electronic","Physics, Applied
Journal title
Integrated ferroelectrics (Print) → ACNP
ISSN journal
10584587
Volume
21
Issue
1-4
Year of publication
1998
Pages
469 - 473
Database
ISI
SICI code
1058-4587(1998)21:1-4<469:TIOMOT>2.0.ZU;2-9
Abstract
Microstructural and electrical properties were investigated for barium strontium titanium oxide (BSTO) magnesium oxide doped (0 to 10 wt. %) thin films deposited by the pulsed laser deposition (PLD) method on P t/TiOx/SiO2/Si substrates. The dielectric properties were found to be strongly dependent on composition and microstructure. In cross-section , all films exhibited a columnar polycrystalline microstructure with v ertical orientation deviations dictated by the surface roughness of th e Pt electrode. A uniform granular microstructure was observed for all films in plan view. The dielectric constant, loss tangent and grain s ize decreased with increasing MgO concentration.