Masters Theses

Abstract

"A new sample holder for measuring the high frequency dielectric constant of ferroelectrics at high temperature was constructed. The new sample holder eliminated discontinuities in the slotted line and improved the electrical contact between the ceramic and brass components. Measurements of the high frequency dielectric constant of an aged sample of 90% BiFeO₃ - 10% PbTiO₃ were made as a function of temperature using the slotted line technique. The dissipation function for the aged sample was found to have a more normal behavior near the Curie point than the virgin samples previously measured. Resistivity measurements were made as a function of temperature and voltage on the solid solution of 40% BiMnO₃ - 60% PbTiO₃. These measurements showed that the conduction is primarily N-type and the contacts are ohmic. A discussion is presented which indicates that for magnetic ions the Jahn-Teller effect may affect the short range forces in the crystal which determine ferroelectric parameters"--Abstract, page ii.

Advisor(s)

Gerson, Robert, 1923-2013

Committee Member(s)

Rivers, Jack L.
James, William Joseph

Department(s)

Physics

Degree Name

M.S. in Physics

Sponsor(s)

U.S. Atomic Energy Commission

Publisher

University of Missouri at Rolla

Publication Date

1968

Pagination

v, 40 pages

Note about bibliography

Includes bibliographical references (pages 63-64).

Rights

© 1968 Harris C. Jones, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Bismuth compounds
Ferroelectric crystals
Dielectric measurements

Thesis Number

T 2142

Print OCLC #

5998691

Electronic OCLC #

835592157

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