Transient magnetic fields in the megagauss regime prove as a new tool to in
vestigate detailed information on spin-lattice relaxation using the delayed
population change of the spin levels in the presence of rapidly varying ma
gnetic fields, The method is applied to HgSe and HgTe epitaxial layers in m
agnetic fields up to 150 T. (C) 2001 Elsevier Science B.V. All rights reser
ved.