Electron Paramagnetic Resonance Study of Cu2+ in K2Zn(ZrF6)2 · 6 H2O

Autor:	R. L. Davidovich, Yu. V. Yablokov, V. E. Petrashen
Rok vydání:	1978
Předmět:	Field (physics) Chemistry Conjugated system Atmospheric temperature range Condensed Matter Physics Molecular physics Spectral line Electronic Optical and Magnetic Materials Ion law.invention Crystallography law Tensor Electron paramagnetic resonance
Zdroj:	Physica Status Solidi (b). 88:439-443
ISSN:	1521-3951 0370-1972
Popis:	An EPR study of Cu2+ ions in K2Zn(ZrF6) · 6 H2O in the temperature range 4.2 to 300 K at X and Q bands is carried out on single crystals and powders. The presence of the two conjugated Cu(H2O)62+ complexes is discovered and the angles between respective axes of the rhombic crystalline field are determined. The temperature dependence of the Cu2+ EPR spectrum tensor parameters is discussed in terms of dynamic Jahn-Teller effect. The additional arguments in favour of the dynamic nature of the observed phenomena are given and the values of the energy splittings between three possible Jahn-Teller configurations δ1,2 ≈ 280 cm−1, δ1,3 ⪆ 1000 cm−1 are obtained. The necessity of the “dynamic” approach to the study of “static” Jahn-Teller EPR spectra of Cu(H2O)62+ complexes in similar low-symmetry crystals is shown. Russian text ignored.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8c5134732e50697890ac4f592d34ef67 https://doi.org/10.1002/pssb.2220880208 Zobrazit plný text záznamu Plný text