THE INFRARED AND RAMAN SPECTRA OF $KTaO_{3}$

Thumbnail Image

Files

1966-U-11.jpg (113.35 KB)

Date

1966

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Ohio State University

Research Projects

Organizational Units

Journal Issue

Abstract

The reflectivity of KTaO3 has been measured from 2.5-500 microns (4000−20cm−1). Two slightly temperature-dependent modes and one highly temperature-dependent low-frequency mode were observed over the temperature range 10−450∘K. Substantial agreement with Cochran's ``soft'' mode theory was found with this mode obeying approximately ωT(T)∝ϵ0(T)1/2. The supposed second order Raman spectrum was measured as a function of temperature and found to be surprisingly strong and complex.

Description

This work was supported in part by Air Force Cambridge Research Laboratories under contract AF 19(628)-395. The work of the Spectroscopy Laboratory is supported in part by the National Science Foundation, Grant No. GP4923. This work of the Research Laboratory of Electronics supported in part by the Joint Services Electronics Program under contract DA36-039-AMC-03200(E).


Author Institution: Spectroscopy Laboratory and Research Laboratory of Electronics, Massachusetts Institute of Technology

Keywords

Citation

URI

http://hdl.handle.net/1811/15121

Collections

Abstracts of OSU International Symposium on Molecular Spectroscopy 1960-1969