Jahn-Teller Effects in the Electron Paramagnetic Resonance of ${Cu}^{+ +}$ in Ca ${(OH)}_{2}$

1 May 1970

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 1 (9) , 3609-3613
https://doi.org/10.1103/physrevb.1.3609

Abstract

The EPR spectra of

{Cu}^{+ +}

present as an impurity in haxagonal Ca

{(OH)}_{2}

has been investigated in the temperature range 85-380°K. Below 145°K, the EPR spectra, I, show a "static" Jahn-Teller effect (JTE) with

g_{II} = 2.421

g_{⊥} = 2.079

{}^{65}A = 142 \pm 1

{}^{63}A = 132 \pm 1

{}^{65}B = {}^{63}B = 0 \pm 3

G. Above 145°K, the spectrum, III, is due to the "dynamic" JTE with

g_{II} = 2.241

g_{⊥} = 2.172

A = 48

G and

B = 37

G. These values for III are almost exact averages of the corresponding values for I when the latter executes hindered rotation about the hexagonal

c

axis. Further support for this interpretation is provided by the studies of peak-height dependence on temperature for both the static and dynamic spectra.

Keywords

This publication has 17 references indexed in Scilit:

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Jahn-Teller Effects in the Electron Paramagnetic Resonance ofCu++in Ca(OH)2

Abstract

Keywords

Jahn-Teller Effects in the Electron Paramagnetic Resonance of ${Cu}^{+ +}$ in Ca ${(OH)}_{2}$