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Phase transition studies in barium and strontium titanates at microwave frequenciesThe objectives were the following: to understand the phase transformations in barium and strontium titanates as the crystals go from one temperature to the other; and to study the dielectric behavior of barium and strontium titanate crystals at a microwave frequency of 9.12 GHz and as a function of temperature. Phase transition studies in barium and strontium titanate are conducted using a cylindrical microwave resonant cavity as a probe. The cavity technique is quite successful in establishing the phase changes in these crystals. It appears that dipole relaxation plays an important role in the behavior of the dielectric response of the medium loading the cavity as phase change takes place within the sample. The method of a loaded resonant microwave cavity as applied in this work has proven to be sensitive enough to monitor small phase changes of the cavity medium.
Document ID
19930021781
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dahiya, Jai N.
(State Univ. of Southeast Missouri Cape Girardeau, MO, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1993
Publication Information
Publication: NASA. Langley Research Center, National Educators' Workshop. Update 92: Standard Experiments in Engineering Materials Science and Technology
Subject Category
Solid-State Physics
Accession Number
93N30970
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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