Substrate-induced strain effects on the transport properties of pulsed laser-deposited Nb-doped SrTiO3 films.

Authors :: Ramadan, W.
Ogale, S. B.
Dhar, S.
Zhang, S. X.
Kundaliya, D. C.
Satoh, I.
Venkatesan, T.
Source :: Applied Physics Letters; 4/3/2006, Vol. 88 Issue 14, p142903, 3p, 3 Graphs
Publication Year :: 2006
Abstract: Thin films of Nb-doped SrTiO<subscript>3</subscript> (NSTO) are grown via pulsed laser deposition (PLD) on LaAlO<subscript>3</subscript> (LAO,001), MgAl<subscript>2</subscript>O<subscript>4</subscript> (MAO,001), SrTiO<subscript>3</subscript> (STO,001), and Y-stabilized ZrO<subscript>2</subscript> (YSZ,001) substrates. The effects of the film-substrate lattice mismatch, film thickness, and substrate temperature during growth on the film properties are investigated. The electrical transport in NSTO films is shown to exhibit a strong sensitivity to strain, which is suggested to arise from the dependence of carrier mobility on bond distortions/stretching and related changes in phonon modes. [ABSTRACT FROM AUTHOR]

Subjects :: THIN films
SURFACES (Technology)
PULSED laser deposition
SOLID state electronics
COATING processes
SEMIMODULAR lattices
MODULAR lattices

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