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Pulsed laser deposition-induced reduction of SrTiO3 crystals / Matthew L. Scullin in Acta materialia, Vol. 58 N° 2 (Janvier 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 2 (Janvier 2010) . - pp. 457-463 Titre : Pulsed laser deposition-induced reduction of SrTiO3 crystals Type de document : texte imprimé Auteurs : Matthew L. Scullin, Auteur ; Jayakanth Ravichandran, Auteur ; Choongho Yu, Auteur Article en page(s) : pp. 457-463 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Perovskites  Thin-films  Laser  deposition  Electrical  resistivity  Secondary  ion  mass  spectroscopy Index. décimale : 669 Métallurgie Résumé : We report a generic method for fast and efficient reduction of strontium titanate (SrTiO3, STO) single crystals by pulsed laser deposition (PLD) of thin-films. The reduction was largely independent of the thin-film material deposited on the crystals. It is shown that thermodynamic conditions (450°C, 10−7 torr, 10–60 min), which normally reduce STO (0 0 1) substrates to roughly 5 nm into a crystal substrate, can reduce the same crystals throughout their 500 μm thickness when coupled with the PLD. In situ characterization of the STO substrate resistance during thin-film growth is presented. This process opens up the possibility of employing STO substrates as a back-gate in functional oxide devices. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235556%23 [...] [article] Pulsed laser deposition-induced reduction of SrTiO3 crystals [texte imprimé] / Matthew L. Scullin, Auteur ; Jayakanth Ravichandran, Auteur ; Choongho Yu, Auteur . - pp. 457-463. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 2 (Janvier 2010) . - pp. 457-463 Mots-clés : Perovskites  Thin-films  Laser  deposition  Electrical  resistivity  Secondary  ion  mass  spectroscopy Index. décimale : 669 Métallurgie Résumé : We report a generic method for fast and efficient reduction of strontium titanate (SrTiO3, STO) single crystals by pulsed laser deposition (PLD) of thin-films. The reduction was largely independent of the thin-film material deposited on the crystals. It is shown that thermodynamic conditions (450°C, 10−7 torr, 10–60 min), which normally reduce STO (0 0 1) substrates to roughly 5 nm into a crystal substrate, can reduce the same crystals throughout their 500 μm thickness when coupled with the PLD. In situ characterization of the STO substrate resistance during thin-film growth is presented. This process opens up the possibility of employing STO substrates as a back-gate in functional oxide devices. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235556%23 [...]