Ferromagnetism at room temperature in La0.8Ca0.2MnO3 thin films

Authors
Shreekala, R Rajeswari, M Srivastava, RC Ghosh, K Goyal, A Srinivasu, VV Lofland, SE Bhagat, SM Downes, M Sharma, RP Ogale, SB Greene, RL Ramesh, R Venkatesan, T Rao, RA Eom, CB
Citation
R. Shreekala et al., Ferromagnetism at room temperature in La0.8Ca0.2MnO3 thin films, APPL PHYS L, 74(13), 1999, pp. 1886-1888
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
74
Issue
13
Year of publication
1999
Pages
1886 - 1888
Database
ISI
SICI code
0003-6951(19990329)74:13<1886:FARTIL>2.0.ZU;2-0
Abstract
Anomalously high metal-insulator transition temperature T (p) and ferromagn etic transition temperature T (c) have been observed in thin films of La0.8 Ca0.2MnO3. Ferromagnetic resonance signals from microwave studies are obser ved at room temperature (well above Tc) suggesting the presence of multiple magnetic spin systems. The T (p) and T (c) values are higher than that of La0.67Ca0.33MnO3 which have the highest T (p) and T (c) according to the bu lk phase diagram. These results suggest that properties well beyond those s een in the bulk phase diagram may be achievable in thin films of the mangan ites. (C) 1999 American Institute of Physics.