Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10653663 | Solid State Communications | 2005 | 5 Pages |
Abstract
Magnetoresistance (MR) and magnetization (dc and ac) measurements have been carried out on the manganites, (La0.7â2xEux)(Ca0.3Srx)MnO3 (0.05â¤xâ¤0.15), in the temperature range of 5-320 K. At 5 K, an unusually large MR of almost 98% is observed in the x=0.15 sample, nearly up to fields of 4-5 T. This large high-field MR occurs in the metallic region, far below the insulator-metal transition temperature, and does not vary linearly with applied field. The unusual magnetoresistance is explained in the light of various possibilities such as phase segregation, cluster spin-glass behavior, etc.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
D.S. Rana, C.M. Thaker, K.R. Mavani, D.G. Kuberkar, S.K. Malik,