U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Raman Investigation of the Layered Manganese Perovskite La1.2 Sr1.8 Mn207

Published

Author(s)

D B. Romero, V B. Podobedov, A Weber, Joseph P. Rice, J.F. Mitchell, R P. Sharma, H D. Drew

Abstract

We report the results of a detailed polarization and temperature dependence study of the Raman scattering from La1.2Sr1.8Mn207. The Raman spectra reveal three general spectral features. First, there are sharp peaks due to long-wavelength optic phonons. Phonons, attributed to the distortion of the MNO6 octahedra, reveal an anomalous behavior which correlates with the transition from a paramagnetic-insulating (Pl) to a ferromagnetic-metallic (FM) phase at a critical temperature Tc. Second, there is an electronic continuum that is suppressed for w <500 cm-1 at T<
Citation
Materials Research Society Symposium
Pub Type
Journals

Keywords

colossal magnetoresistance, electronic Raman scattering, layered manganese perovskite, phonons, Raman spectroscopy

Citation

Romero, D. , Podobedov, V. , Weber, A. , Rice, J. , Mitchell, J. , Sharma, R. and Drew, H. (1997), Raman Investigation of the Layered Manganese Perovskite La1.2 Sr1.8 Mn207, Materials Research Society Symposium (Accessed July 18, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created December 3, 1997, Updated October 12, 2021