Unusual material properties induced by irradiation, doping and alloying

Abstract

The modern device concepts have triggered an interesting scientific searchfor new multifunctional materials with novel set of physical properties.One of the scientifically challenging and technologically rewardingapproaches is to explore the possibilities of inducing new novelfunctionalities by incorporating foreign elements either via energeticions or chemically, thereby harnessing the benefits of both intrinsic andextrinsic properties. Alloying, interface, imperfection and dimensionalityplay critical roles in the manipulation process leading to unexpectedcatalysis processes inside solids, magnetic properties without anymagnetic element, thermal conductivities, electronic phase separation andtransports. In this talk, I will summarize and discuss the results of anumber of studies carried out on different elemental semiconductors, wideband gap oxides and layered structure materials.