Gw. Burdick et al., Electric-dipole 4f(N)-4f(N) transition intensity parametrizations for lanthanides: an examination of multiple local minima, J ALLOY COM, 323, 2001, pp. 778-782
For most symmetries the standard parametrization of one-photon electric-dip
ole transitions between crystal-field levels of the 4f(N) configuration of
lanthanide ions gives the same predictions for several quite different para
meter sets. An alternative parametrization scheme that provides separate pa
rameters for each of the different polarization directions has been shown t
o remove this anomaly. A second problem arises due to the fact that multipl
e local minima may fit the data nearly equally well. Through a detailed ree
xamination of a series of lanthanide oxydiacetate (LnODA, Ln = Nd, Sm, Eu,
Dy, and Ho) systems using the new parametrization, we examine the multiple
local minima problem, and attempt a determination of the robustness of the
global parametrization minimum. (C) 2001 Elsevier Science B.V. All rights r
eserved.