Study of magnetoresistance in Rh-doped FePt
Abstract
First order antiferromagnetic (AFM) to ferromagnetic (FM) transition in FePt0.78Rh0.22 has been studied by resistivity and magnetoresistance (MR) measurements. With the application of magnetic field, AFM-FM transition temperature (TN) decreases monotonically at the rate of ∼4.5K/Tesla. Around TN AFM to FM transition can be induced with the application of magnetic field which shows a large MR of ∼16%, at 8 Tesla magnetic fields. At room temperature in the FM state it shows ∼5% negative MR.
- Publication:
-
Solid State Physics
- Pub Date:
- June 2012
- DOI:
- 10.1063/1.4710416
- Bibcode:
- 2012AIPC.1447.1151B
- Keywords:
-
- antiferromagnetic materials;
- ferromagnetic materials;
- ferromagnetic-antiferromagnetic transitions;
- iron alloys;
- magnetoresistance;
- platinum alloys;
- rhodium alloys;
- 72.15.Gd;
- 75.30.Kz;
- 75.50.Ee;
- Galvanomagnetic and other magnetotransport effects;
- Magnetic phase boundaries;
- Antiferromagnetics