Metalorganic Chemical Vapor Deposition of Conductive CaRuO 3 Thin Films

CaRuO 3 thin films expected for use as an electrode of ferroelectric random-access memory were prepared for the first time by metalorganic chemical vapor deposition (MOCVD) from the bis(dipivaloylmethanato)calcium(tetraen) [Ca(C 11 H 29 O 2 ) 2 (C 8 H 23 N 5 ) x ]–tris(dipivaloylmethanato)ruthenium...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 39; no. 5R; p. 2780
Main Authors Higashi, Noriyuki, Okuda, Norikazu, Funakubo, Hiroshi
Format Journal Article
LanguageEnglish
Published 01.05.2000
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Summary:CaRuO 3 thin films expected for use as an electrode of ferroelectric random-access memory were prepared for the first time by metalorganic chemical vapor deposition (MOCVD) from the bis(dipivaloylmethanato)calcium(tetraen) [Ca(C 11 H 29 O 2 ) 2 (C 8 H 23 N 5 ) x ]–tris(dipivaloylmethanato)ruthenium [Ru(C 11 H 29 O 2 ) 3 ]–O 2 and the bis(dipivaloylmethanato)calcium(tetraen) [Ca(C 11 H 29 O 2 ) 2 (C 8 H 23 N 5 ) x ]–bis(ethylcyclipentadienyl)ruthenium Ru[(C 5 H 4 )(C 2 H 5 )] 2 –O 2 systems. Epitaxial films were obtained on (100)LaAlO 3 and (100)SrTiO 3 substrates at 750°C, while randomly oriented films were obtained on a (100)MgO substrate. The resistivity of these films was about 200 µΩ·cm, and was confirmed to be independent of film thickness ranging from 70 to 300 nm. This value is lower than that of SrRuO 3 thin films, about 280 µΩ·cm.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.39.2780