Dr Vijayaraghavan has made significant contribution in the study of metals and alloys by the nuclear magnetic resonance technique. His studies on the oscillatory character of conduction, electron polarisation in rare earth alloys, Kondo Type behaviour in concentrated cerium alloys, and crystal field effects on the magnetism and the hyperfine fields in samarium alloys are well known. Dr Vijayaraghavan and his group are working on spin glasses, Heusler alloys and other magnetic materials.