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Temperature-Dependent Electrical and Micromechanical Properties of Lanthanum Titanate with Additions of YttriaTemperature-dependent elastic properties were determined by establishing continuous flexural vibrations in the material at its lowest resonance frequency of 31tHz. The imaginary part of the complex impedance plotted as a function of frequency and temperature reveals a thermally activated peak, which decreases in magnitude as the temperature increases. Additions of yttria do not degrade the electromechanical in particularly the elastic and anelastic properties of lanthanum titanate. Y2O3/La2Ti2O7 exhibits extremely low internal friction and hence may be more mechanical fatigue-resistant at low strains.
Document ID
20100040437
Acquisition Source
Glenn Research Center
Document Type
Reprint (Version printed in journal)
Authors
Goldsby, Jon C.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 25, 2013
Publication Date
September 15, 2010
Publication Information
Publication: Materials Science and Engineering B: Advanced Functional Solid-state Materials
Volume: 172
Issue: 3
ISSN: 0921-5107
Subject Category
Nonmetallic Materials
Report/Patent Number
E-17213
Funding Number(s)
WBS: WBS 599481a.0107.03.02.12.02-
Distribution Limits
Public
Copyright
Other

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