Polyoxoniobates: How Solution Chemistry Helps to Understand the Solid State
Marek, Keith Adam
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https://hdl.handle.net/2142/84046
Description
Title
Polyoxoniobates: How Solution Chemistry Helps to Understand the Solid State
Author(s)
Marek, Keith Adam
Issue Date
2001
Doctoral Committee Chair(s)
Klemperer, Walter G.
Department of Study
Chemistry
Discipline
Chemistry
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Chemistry, Inorganic
Language
eng
Abstract
A structural model is proposed for the chemical B-site ordering in relaxor ferroelectric Pb3ZnNb2O9 and Pb3MgNb 2O9. The basis for this model is the imposition of order using a divalent cation nearest-neighbor exclusion algorithm on a random cubic lattice with 2:1 Nb:(Mg/Zn) occupancy. The ordered structure obtained is consistent with current structural data obtained on these compounds.
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