MAGNETIC CIRCULAR DICHROISM OF DOPED UNIAXIAL CRYSTALS.

Abstract

Magnetic circular dichroism (MCD) allows diagonal and nondiagonal matrix elements of the magnetic dipole moment operator to be determined experimentally. MCD measurements at various temperatures down to $4^{\circ}K$ are of great aid in clarifying spectral assignments of broad bands and have no counterpart in spectroscopy. This will be demonstrated in the particular examples of the transitions $^{4}I_{9/2}-^{2}P_{1/2}$ of $Nd^{2+}$ in $CaWO_{4}$ and $^{3}H_{4} - ^{2}P_{o}$ in $AILaO_{3}$.