Microstructure, crystallinity, and properties of low-pressure MOCVD-grown europium oxide films

Singh, MP and Shalini, K and Shivashankar, SA and Deepak, GC and Bhat, N and Shripathi, T (2008) Microstructure, crystallinity, and properties of low-pressure MOCVD-grown europium oxide films. In: Materials Chemistry and Physics, 110 (2-3). pp. 337-343.

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Abstract

A study of growth, structure, and properties of $Eu_2O_3$ thin films were carried out. Films were grown at $500-600^o C$ temperature range on Si(100) and fused quartz from the complex of $Eu(acac)_3$. Phen by low pressure metalorganic chemical vapor deposition technique which has been rarely used for $Eu_2O_3$ deposition.These films were polycrystalline. Depending on growth conditions and substrates employed, these films had also possessed a parasitic phase. This phase can be removed by post-deposition annealing in oxidizing ambient. Morphology of the films was characterized by well-packed spherical mounds. Optical measurements exhibited that the bandgap of pure $Eu_2O_3$ phase was 4.4 eV. High frequency 1MHz capacitance–voltage (C–V) measurements showed that the dielectric constant of pure $Eu_2O_3$ film was about 12. Possible effects of cation and oxygen deficiency and parasitic phase on the optical and electrical properties of $Eu_2O_3$ films have been briefly discussed.

Item Type:	Journal Article
Publication:	Materials Chemistry and Physics
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	MOCVD;Rare earth oxides;Thin films;Microstructure Properties.
Department/Centre:	Division of Chemical Sciences > Materials Research Centre Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	10 Jul 2008
Last Modified:	19 Sep 2010 04:47
URI:	http://eprints.iisc.ac.in/id/eprint/14922

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