In-Situ, in Air, High-Temperature Phase Transformations in Rare-Earth Niobates and Titanium Oxides (Dysprosium and Yttrium) Using a Thermal-Image Furnace
Siah, Lay Foong
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https://hdl.handle.net/2142/82716
Description
Title
In-Situ, in Air, High-Temperature Phase Transformations in Rare-Earth Niobates and Titanium Oxides (Dysprosium and Yttrium) Using a Thermal-Image Furnace
Author(s)
Siah, Lay Foong
Issue Date
2002
Doctoral Committee Chair(s)
Kriven, Waltraud M.
Department of Study
Materials Science and Engineering
Discipline
Materials Science and Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Materials Science
Language
eng
Abstract
"The use of a co-existent ""in-situ thermometer"" was found to be a viable method to monitor the sample temperature in the image ""hot-spot"". Studies of YNbO4 and DyNbO4 revealed the existence of a new cubic phase at elevated temperatures beyond the commonly known ferroelastic monoclinic-to-paraelastic tetragonal transformations. A series of high-temperature powder patterns of the pure hexagonal phase of DY2TiO5 was also collected in-situ, in air."
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