원문정보
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초록
영어
The magnetocaloric effect and magnetization behaviors have been studied for La1-xPbxMnO3 (x=0.1, 0.2, 0.3) alloys. X-ray diffraction patterns revealed that all the La1-xPbxMnO3 (x=0.1, 0.2, 0.3) compound had a single phase with an orthorhombic structure. Adiabatic temperature change was measured directly by a special cryostat. The Curie temperature increased from 190 K to 350 K with increasing Pb concentration. The magnetic properties showed superparamagnetic behavior above Tc. A large magnetic entropy change, which is calculated from H vs M curves associated with the ferromagnetic-paramagnetic transitions has been observed. The maximum of La0.8Pb0.2MnO3 was 1.22 J/kg K at 290 K for an applied field of 1.5 T.
목차
Abstract
1. Introduction
2. Experiments
3. Results and discussion
4. Conclusion
References
1. Introduction
2. Experiments
3. Results and discussion
4. Conclusion
References
저자정보
참고문헌
자료제공 : 네이버학술정보