OPTICAL-PROPERTIES OF NDAG IN THE FERROMAGNETIC AND PARAMAGNETIC PHASES

Interband optical conductivity and oscillator strength of NdAg in both paramagnetic and ferromagnetic phases at normal pressure have been ca lculated from the energy band structure calculations in the Linear Muf fin-Tin Orbital with Atomic Sphere Approximation (LMTO-ASA) formalism. The transition probability has a strong effect on the magnitude and p osition of the peaks in both the phases. The optical conductivity in t he ferromagnetic phase is greater in magnitude throughout the energy r ange and a marked change is observed in the nature of the peak at 0.4 Ryd. This goes to show that the spin-spin exchange interaction is fair ly strong in NdAg. (C) 1998 Published by Elsevier Science Ltd.