COLOSSAL AND CONSTANT MAGNETORESISTANCE OVER A LARGE TEMPERATURE-RANGE BETWEEN 230 AND 4.2 K IN LA0.8LI0.2MNO3 PREPARED BY A PARTIAL MELTING TECHNIQUE

Authors
WANG XL GEHRINGER P LANG W LIU HK DOU SX
Citation
Xl. Wang et al., COLOSSAL AND CONSTANT MAGNETORESISTANCE OVER A LARGE TEMPERATURE-RANGE BETWEEN 230 AND 4.2 K IN LA0.8LI0.2MNO3 PREPARED BY A PARTIAL MELTING TECHNIQUE, Journal of alloys and compounds, 270(1-2), 1998, pp. 10-12
Citations number
16
Categorie Soggetti
Chemistry Physical","Metallurgy & Metallurigical Engineering","Material Science
Journal title
Journal of alloys and compounds → ACNP
ISSN journal
09258388
Volume
270
Issue
1-2
Year of publication
1998
Pages
10 - 12
Database
ISI
SICI code
0925-8388(1998)270:1-2<10:CACMOA>2.0.ZU;2-W
Abstract
La0.8Li0.2MnO3 was prepared by a partial melting technique. The Li-dop ed LaMnO3, compound has a rhombohedral perovskite structure and shows a wide semiconductor-to-metal transition between 230 and 175 K in resi stance versus temperature. Nearly constant magnetoresistance, Delta rh o/rho(o),, above 20-60% was achieved with application of magnetic fiel ds from 1 to 8 Tesla (T) over a very large temperature range from the ferromagnetic transition at 230-4.2 K. As a comparison, a partial melt ed La0.7Ca0.3MnO3 shows a very narrow ferromagnetic transition around 230 K which is the same as that of single crystals and epitaxy thin fi lms. (C) 1998 Elsevier Science S.A.