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

Autor:	R. Pinto, Alexandre Ricalde Rodrigues, A.E.P. de Araujo, A. K. Nigam, Pratap Raychaudhuri, F.L.A. Machado
Rok vydání:	1999
Předmět:	Materials science Magnetoresistance Field (physics) Condensed matter physics Mineralogy General Chemistry Substrate (electronics) Thermomagnetic convection Condensed Matter Physics Manganite Magnetization Hysteresis Materials Chemistry Metal–insulator transition
Zdroj:	Solid State Communications. 112:423-427
ISSN:	0038-1098
DOI:	10.1016/s0038-1098(99)00383-x
Popis:	We report the magneto-resistance measurements of a highly oriented La 0.55 Ho 0.15 Sr 0.3 MnO 3 film on LaAlO 3 substrate. The film has a metal–insulator transition around 200 K and shows pronounced thermomagnetic history effect in its transport properties below 45 K at 7 T. The irreversibility temperature shifts to lower temperatures when the field is reduced. This behaviour is opposite to the thermomagnetic history effect observed in the magnetisation. At 2.8 K one also observes a significant hysteresis in the resistance–field curve. We propose a qualitative explanation for these observations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6e8692195f92c8dce0f5f4c508732cda https://doi.org/10.1016/s0038-1098(99)00383-x Zobrazit plný text záznamu Full Text from ScienceDirect