Majumdar, Subham ; Mallik, R. ; Sampathkumaran, E. V. ; Rupprecht, Kirsten ; Wortmann, G. (1999) Magnetic behavior of Eu2CuSi3: large negative magnetoresistance above the Curie temperature Physical Review B: Condensed Matter and Materials Physics, 60 (9). pp. 6770-6774. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v60/i9/p6770_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.60.6770
Abstract
We report here the results of magnetic susceptibility, electrical resistivity, magnetoresistance (MR), heat-capacity, and 151Eu Mössbauer-effect measurements on the compound Eu2CuSi3, crystallizing in an AlB2-derived hexagonal structure. The results establish that Eu ions are divalent, undergoing long-range ferromagnetic ordering below (TC=) 37 K. An interesting observation is that the sign of MR is negative even at temperatures close to 3TC, with increasing magnitude with decreasing temperature exhibiting a peak at TC. This observation is of relevance to the field of collosal magnetoresistance.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 45666 |
| Deposited On: | 29 Jun 2011 03:24 |
| Last Modified: | 29 Jun 2011 03:24 |
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