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Title:Part I. Synthesis of Metal Hydroborates as Potential Chemical Vapor Deposition Precursors. Part II. Chemical Vapor Deposition of Titanium-Doped Magnesium Diboride Thin Films
Author(s):Kim, Do Young
Doctoral Committee Chair(s):Girolami, Gregory S.
Department / Program:Chemistry
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Materials Science
Abstract:The first low-temperature chemical vapor depositions of doped MgB 2 phases have been achieved by passing the precursor Mg(H3BNMe 2BH3)2 over a surface in the presence of a catalyst that accelerates the rate of the CVD growth reaction. Transition metal hydroborates can serve as effective catalysts, of which Ti(H3BNMe2BH 3)2 is the most attractive so far because it leads to the lowest level of Mg site substitution; the resulting film stoichiometry is Mg0.8Ti0.2B2. Although the metal substitution renders the films non-superconducting above 4 K, the results clearly point the way to the development of technologically-attractive CVD processes to grow superconducting MgB2 thin films at temperatures below 400°C.
Issue Date:2007
Description:209 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007.
Other Identifier(s):(MiAaPQ)AAI3269943
Date Available in IDEALS:2015-09-25
Date Deposited:2007

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