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A New Probe to Change Curie Temperature of PbTiO3 SensorsHigh temperature Raman spectra of nanocrystalline Pb(0.8)Ba(0.2)TiO3, Pb(0.8)Sr(0.2) TiO3, Pb(0.8)La(0.2)TiO3 and Pb(0.8)Ba(0.2)TiO3, have been measured, as a function of particle size. There appears respectively a distinct temperature-induced soft mode phase transition in every sample whose Curie temperature can be determined from the mean-field theory. The detailed Curie temperature shift in modified PbTi03 ceramics by Ba, Sr, La, and Zr, has also been investigated as a function of particle size. This study will favor preparations of high efficiency PbTi03 sensors with an adjustable Curie temperature.
Document ID
20010000430
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Katiyar, R. S. (Puerto Rico Univ. San Juan, Puerto Rico)
Jinfang, Meng (Puerto Rico Univ. San Juan, Puerto Rico)
Date Acquired
August 20, 2013
Publication Date
February 1, 1997
Publication Information
Publication: NASA University Research Centers Technical Advances in Education, Aeronautics, Space, Autonomy, Earth and Environment
Volume: 1
Subject Category
Inorganic, Organic And Physical Chemistry
Report/Patent Number
URC97071
Report Number: URC97071
Funding Number(s)
CONTRACT_GRANT: NSF OSR-94-52893
CONTRACT_GRANT: NCCW-88
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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