High-frequency magnetoimpedance of double perovskite La1.2Sr1.8Mn2O7: Secondary transitions at high temperatures

Authors
Patanjali, PV Theule, P Zhai, Z Hakim, N Sridhar, S Suryanarayanan, R Apostu, M Dhalenne, G Revcolevschi, A
Citation
Pv. Patanjali et al., High-frequency magnetoimpedance of double perovskite La1.2Sr1.8Mn2O7: Secondary transitions at high temperatures, PHYS REV B, 60(13), 1999, pp. 9268-9271
Citations number
37
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
13
Year of publication
1999
Pages
9268 - 9271
Database
ISI
SICI code
0163-1829(19991001)60:13<9268:HMODPL>2.0.ZU;2-4
Abstract
Radio frequency magnetoimpedance measurements reveal a pronounced anomaly a t 260 K besides the main metal-insulator transition at 125 K in the double- perovskite material La1.2Sr1.8Mn2O7. This feature is not seen clearly in st atic resistivity and magnetization measurements. We suggest that this anoma ly represents short-range magnetic correlations enhanced at radio frequenci es, with the easy axis along the c axis. [S0163-1829(99)08437-4].