التفاصيل البيبلوغرافية
| العنوان: |
Anomalous magnetic field dependence of magnetocaloric effect at low temperature in Pr0.52Sr0.48MnO3 single crystal. |
| المؤلفون: |
Patra, M., Majumdar, S., Giri, S., Iles, G. N., Chatterji, T. |
| المصدر: |
Journal of Applied Physics; Apr2010, Vol. 107 Issue 7, p076101-076104, 3p, 3 Graphs |
| مصطلحات موضوعية: |
PHYSICS research, SEMICONDUCTOR industry, CRYSTALS, MAGNETOCHEMISTRY, MAGNETIC fields, THERMODYNAMICS |
| مستخلص: |
We report the magnetocaloric effect (MCE) in a Pr0.52Sr0.48MnO3 single crystal. A peak in the temperature dependence of magnetic entropy change (ΔSM) with a fairly large negative value (≈3.8 J/kg K) is observed at 275 K close to Curie temperature. MCE is spread over a wide temperature range resulting in a considerable refrigerant capacity (≈293 J/kg). At low temperature the sign of ΔSM changes, below which anomalous field dependence of ΔSM is observed indicating the coexistence of ferromagnetic and antiferromagnetic interactions. Interplay between the interactions is strongly influenced by direction and magnitude of applied magnetic field in the ordered state. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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