Field Induced Unusual Magnetic Behavior at Low Temperature in Pr0.67Ca0.33MnO3 |
| M. Pektas, H. Gencer, T. Izgi, V.S. Kolat and S. Atalay
Inonu University, Science and Arts Faculty, Physics Department, 44069 Malatya, Turkey |
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| In this study, magnetic properties of Pr0.67Ca0.33MnO3 compound were investigated in detail. The magnetization versus temperature (M-T) curve showed that this material undergoes a charge order transition at 200 K. A more pronounced FM phase appeared below 56 K. At T = 5 K, a field induced sharp step like magnetisation transition associated with phase separation was observed. However, after application of 7 T magnetic field at 5 K, the magnetic behaviour of sample was changed completely and full FM behaviour was observed. The more interesting is that the sample remains in the FM state and does not retrieve the initial magnetic state until warmed up to charge order transition temperature. Large negative magnetic entropy change (- 26.18 J/(kg K) at 38 K and 5 T) was attributed to step like magnetisation transition. |
DOI: 10.12693/APhysPolA.125.217 PACS numbers: 75.47.Lx, 75.30.Kz, 75.30.Sg |