Features of high-frequency ultrasound propagation in the temperature rangeof structural and magnetic phase transitions in La1-xSrxMnO3 (x=0.175) manganite

Authors
Bogdanova, KG Bulatov, AR Golenishchev-Kutuzov, VA Shakirzyanov, MM
Citation
Kg. Bogdanova et al., Features of high-frequency ultrasound propagation in the temperature rangeof structural and magnetic phase transitions in La1-xSrxMnO3 (x=0.175) manganite, PHYS SOL ST, 43(8), 2001, pp. 1572-1575
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICS OF THE SOLID STATE
ISSN journal
10637834 → ACNP
Volume
43
Issue
8
Year of publication
2001
Pages
1572 - 1575
Database
ISI
SICI code
1063-7834(2001)43:8<1572:FOHUPI>2.0.ZU;2-F
Abstract
The propagation of ultrasonic waves at a frequency of 770 MHz in a La0.825S r0.175MnO3 single crystal is investigated in the temperature range 350-150 K. It is found that the velocity, attenuation, and mode composition of ultr asonic waves change at temperatures of 315-280 and 220 K. These changes cor relate with the structural and magnetic phase transitions and can be explai ned in terms of the Jahn-Teller distortions of the crystal lattice. (C) 200 1 MAIK "Nauka/ Interperiodica".