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Microwave Irradiation Assisted Method for the Rapid Synthesis of fine Particles of alpha Al2O3 And alpha (Al1-XCrx)(2)O-3 And Their Coatings on Si(100)

Gairola, Anshita and Umarji, AM and Shivashankar, SA (2009) Microwave Irradiation Assisted Method for the Rapid Synthesis of fine Particles of alpha Al2O3 And alpha (Al1-XCrx)(2)O-3 And Their Coatings on Si(100). In: Materials Science and Technology Conference and Exhibition (MS&T 08), OCT 05-09, 2008 , Pittsburgh, PA, pp. 15-21.

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Abstract

Chromium substituted beta diketonate complexes of aluminium have been synthesized and employed as precursors for a novel soft chemistry process wherein microwave irradiation of a solution of the complex yields within minutes well crystallized needles of alpha (Al1 XCrx)(2)O-3 measuring 20 30 nm in diameter and 50 nm long By varying the microwave irradiation parameters and using a surfactant such as polyvinyl pyrrolidone the crystallite size and shape can be controlled and their agglomeration prevented These microstructural parameters as well as the polymorph of the Cr substituted Al2O3 formed may also be controlled by employing a different complex Samples of alpha (Al1 XCrx)(2)O-3 have been characterized by XRD FTIR and TEM The technique results in material of homogeneous metal composition, as shown by EDAX and can be adjusted as desired The technique has been extended to obtain coatings of alpha (Al1 XCrx)(2)O-3 on Si(100)

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to Amer Ceramic Soc.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Ms TV Yashodha
Date Deposited: 22 Feb 2011 07:08
Last Modified: 22 Feb 2011 07:08
URI: http://eprints.iisc.ac.in/id/eprint/35683

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