Masters Theses

Abstract

"The purpose of this research was to investigate the dielectric behavior of thallous nitrate and to determine whether it belongs to space group Pbnm or to Pbn2.

The growing of single crystals of thallous nitrate which are suitable for dielectric measurements is difficult because the crystals are prone to initiate a dendritic growth habit. In the present work single crystals of thallous nitrate were obtained, however, by slow evaporation of an aqueous solution at 55 degrees centigrade. The crystals were plates, not larger than 8 x 8 x 2 mm, whose principal faces were subsequently indentifled as (001) planes. The plates were subjected to x-ray analysis to determine crystal orientation, and then shaped for dielectric and piezoelectric measurements.

Ferroelectric characteristics were investigated by measuring the dielectric constants along the three axes at the transition point, and also, by searching for a dielectric hysteresis loop. The results indicate that thallous nitrate is not a ferroelectric.

No piezoelectricity was observed in these crystals. These results favor the assignment of thallous nitrate to the space group Pbnm"--Abstract, p. ii

Advisor(s)

Gerson, Robert, 1923-2013

Committee Member(s)

Scrivner, Jack M., 1929-2004
Pauls, Franklin B., 1911-1996
Pyron, Howard D.

Department(s)

Physics

Degree Name

M.S. in Physics

Publisher

University of Missouri at Rolla

Publication Date

1964

Pagination

vi, 57 pages

Note about bibliography

Includes bibliographical references (pages 55-56)

Rights

© 1964 Gene E. Gowins, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 1670

Print OCLC #

5963331

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