Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1612700 | Journal of Alloys and Compounds | 2014 | 20 Pages |
Abstract
Magnetic properties, heat capacity and magnetoresistance (MR) of polycrystalline GdRhGe are investigated. It shows two antiferromagnetic transitions, one at T1Â =Â 31.8Â K and the other at T2Â =Â 24Â K, and field induced metamagnetic transition over a wide temperature range. The ac susceptibility data reveal that the transition at 24Â K is not simple antiferromagnetic. Dominant contributions to the heat capacity and the resistivity have been identified. MR is found to show sign reversal just below T1 and attains a large positive value of 48% at 2Â K for 50Â kOe. Like MR, the isothermal magnetic entropy change also undergoes a sign reversal as the temperature is varied, indicating a change of the magnetic structure and the moment amplitude in determining these properties.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Sachin Gupta, K.G. Suresh, A.K. Nigam,