Electric-dipole 4fN–4fN transition intensity parametrizations for lanthanides: multiple indistinguishable parameter sets and multiple local minima

Autor:	Rodney Lee Summerscales, Frederick S. Richardson, S. M. Crooks, Michael F. Reid, Gary W. Burdick
Rok vydání:	2000
Předmět:	Maxima and minima Physics Lanthanide Dipole Mechanics of Materials Computational chemistry Mechanical Engineering Homogeneous space Materials Chemistry Metals and Alloys Statistical physics Electric dipole transition Polarization (waves)
Zdroj:	Journal of Alloys and Compounds. :376-382
ISSN:	0925-8388
DOI:	10.1016/s0925-8388(00)00644-7
Popis:	N For most symmetries the standard parametrization of one-photon electric-dipole transitions between crystal-field levels of the 4f configuration of lanthanide ions gives the same predictions for several quite different parameter sets. An alternative parametrization scheme that provides separate parameters for each of the different polarization directions removes this anomaly. A second problem arises due to the fact that multiple local minima may fit the data nearly equally well. Through a detailed reexamination of the previously well-studied system NdODA, we examine and attempt to resolve this local minima problem. © 2000 Elsevier Science S.A. All rights reserved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::383e2f8dd15edbf58beb5ae3af589d83 https://doi.org/10.1016/s0925-8388(00)00644-7 Zobrazit plný text záznamu Full Text from ScienceDirect