In this work, we studied the magnetic entropy change (ΔSM) across the martensite transformation (MT) in Mn-rich Ni46Cu2Mn43ln11 alloy. This compound undergoes a MT and a magnetic phase transition around the temperatures (TM=) 272 K and (TCA=) 325 K, respectively. A large field induced shift (=0.28 K/kOe) of the MT temperatures is observed. An application of magnetic field (H =) of 50 kOe causes a large ΔSM of 20 J/kg-K and-4.4 J/kg-K around TM and TCA, respectively. We also found that the change in magnetic field induced isothermal ΔSM(H)T is mainly depends on the induced austenite phase fraction by the applied magnetic field at that temperature. Possible reasons for the observed behaviours are comprehensively discussed.
|Journal||IOP Conference Series: Materials Science and Engineering|
|Publication status||Published - Mar 1 2018|
|Event||2nd International Conference on Advanced Materials, ICAM 2017 - Irbid, Jordan|
Duration: Jul 10 2017 → Jul 13 2017
- magnetic entropy
- phase transition.
ASJC Scopus subject areas
- Materials Science(all)