A5060612129- Magnetic Properties and Applications
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Thermoelectric Materials and Devices
- Magnetic properties of thin films
- Geomagnetism and Paleomagnetism Studies
- Thermal Radiation and Cooling Technologies
- Magnetic and transport properties of perovskites and related materials
University of California, Los Angeles
2011-2015
The theory of thermomagnetic generation is reviewed and an efficiency analysis using experimentally measured magneto-thermal properties 3d transitional 4f rare earth ferromagnetic elements presented in this study. While theoretical results suggest that 55% Carnot possible, experimental data indicate values smaller than 25% unless large magnetic field (e.g., Ha ∼ 80 kOe) applied. For fields representative NdFeB permanent magnets = 3 kOe), the largest efficiencies are obtained for operating...
A model is developed to correlate the effects of size on thermodynamic efficiency for a nickel-based multiferroic thermomagnetic generator device. Three existing models are combined in order estimate this correlation, they (1) relations, (2) ferromagnetic transition behavior, and (3) bond-order length strength correlation. At smallest considered, monolayer nickel atoms shows reduction Curie temperature from its bulk value Tc,Bulk=630 K Tc,ML=240 K. This difference analytically shown affect...
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