Interesting history effect in the magnetotransport properties of La0.55Ho0.15Sr0.3MnO3 films on LaAlO3

Authors
Raychaudhuri, P de Araujo, AEP Machado, FLA Rodrigues, AR Nigama, AK Pinto, R
Citation
P. Raychaudhuri et al., Interesting history effect in the magnetotransport properties of La0.55Ho0.15Sr0.3MnO3 films on LaAlO3, SOL ST COMM, 112(8), 1999, pp. 423-427
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
112
Issue
8
Year of publication
1999
Pages
423 - 427
Database
ISI
SICI code
0038-1098(1999)112:8<423:IHEITM>2.0.ZU;2-5
Abstract
We report the magneto-resistance measurements of a highly oriented La0.55Ho 0.15Sr0.3MnO3 film on LaAlO3 substrate. The film has a metal-insulator tran sition around 200 K and shows pronounced thermomagnetic history effect in i ts transport properties below 45 K at 7 T. The irreversibility temperature shifts to lower temperatures when the field is reduced. This behaviour is o pposite to the thermomagnetic history effect observed in the magnetisation. At 2.8 K one also observes a significant hysteresis in the resistance-fiel d curve. We propose a qualitative explanation for these observations. (C) 1 999 Elsevier Science Ltd. All rights reserved.