Electron paramagnetic resonance investigations of Gd3+ in Cs2NaYCl6 in the 6–473K temperature range

Autor:	R.J Gleason, J.L Boldú, P Muñoz E
Rok vydání:	1999
Předmět:	Gadolinium Doping Analytical chemistry chemistry.chemical_element General Chemistry Yttrium Atmospheric temperature range Condensed Matter Physics Ion law.invention Nuclear magnetic resonance chemistry law Lattice (order) Caesium General Materials Science Electron paramagnetic resonance
Zdroj:	Journal of Physics and Chemistry of Solids. 60:929-933
ISSN:	0022-3697
DOI:	10.1016/s0022-3697(99)00011-6
Popis:	Electron Paramagnetic Resonance (EPR) studies of cesium sodium yttrium hexachloride (Cs 2 NaYCl 6 ), doped with trivalent gadolinium ions in the 6–473 K temperature range are presented in this work. Owing to the fact that Gd 3+ is located in a cubic crystalline electric field (CEF) symmetry, the relevant spin-Hamiltonian parameters are g , b 4 0 and b 6 0 . It is then established the temperature dependence of b 4 0 . The absolute sign of b 4 0 is determined upon comparing the relative intensity of the otherwise equivalent outermost transitions of the EPR spectrum registered at 6 K. Values of g and b 6 0 are also reported. Anomalous changes in line-width upon reducing the temperature are also discussed in terms of the thermal constriction of the lattice, and its repercussion on the modified Goldsmith tolerance factor (GTF) value.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0087b9003d64a482f57ca64c1421ccc0 https://doi.org/10.1016/s0022-3697(99)00011-6 Zobrazit plný text záznamu Full Text from ScienceDirect