CSIR – National Institute for Interdisciplinary Science and Technology (NIIST)

Council of Scientific & Industrial Research (CSIR), Govt.Of India Thiruvananthapuram.

Magnetic materials in sustainable energy

 

Dr. M. Vasundhara on 8th October 2013 at 11:30 am

A new energy paradigm, consisting of greater reliance on renewable energy sources and increased concern for energy efficiency in the total energy lifecycle, has accelerated research into energy-related technologies. Magnetic materials are desirable for many energy related applications. The magnetic materials viz. rare earth permanent magnets, magnetocaloric materials and magnetism of spintronic materials form important components for energy saving devices in data storage, automotives, aerospace and power sectors. Current research on these classes of materials demonstrates that well designed microstructure strategies for tuning the properties are essential to meet the technology demand. By processing magnetic materials to nano size, the interaction between magnetic length scales and microstructural length scales controls the properties. By virtue of large utilization of soft and hard magnetic materials in many electro-technical devices in automobiles, where the quantum of requirement is increasing day-by-day, there is a pressing need for the development of new magnetic materials with high performance not only to minimize the cost; but also to enhance the device performance and hence energy saving. A lot of research is going on developing magnetic refrigerator using magneto-caloric materials, which heats up when magnetized and cools down while demagnetized. Such magnetic cooling has a potential to reduce global energy consumption and minimize the need of ozone depleting and greenhouse chemicals. The presentation will focus in detail on processing, characterization, and property evaluation of the nanostructure hard / soft magnetic composites and magneto caloric materials for sustainable energy applications.