Unlock cutting-edge insights into the physics and chemistry of rare earth elements. This definitive handbook explores advanced topics including a range of lanthanide magnetic materials, equiatomic ternary ytterbium intermetallic compounds, rare-earth polysulfides, and detailed lanthanide organic complexes. Gain comprehensive knowledge on actinides and comparative lanthanide/actinide behaviours. An indispensable resource for researchers, scientists, and postgraduate students in physics, chemistry, and materials science across Indian academic institutions seeking profound scientific literature.