EPR Study of Impurity Colour Centres in P‐State in Alkali Halides

1 September 1980

journal article
research article
Published by Wiley in Physica Status Solidi (b)

Vol. 101 (1) , 153-161
https://doi.org/10.1002/pssb.2221010116

Abstract

Several types of (Ga°), (In°), and (Tl°) centres in the P‐state are produced in NaCl and KCl crystals doped with gallium, indium, and thallium by X‐irradiation, followed by suitable thermal and optical treatments. The EPR spectra of these centres are studied and the parameters of the spin Hamiltonian are determined from these spectra. The hyperfine interaction constants of (Ga°) and (In°) centres in NaCl are found to be nearly equal to those of free gallium and indium atoms. The structure of the centers investigated is discussed. In NaCl: Sn and KCl: Pb crystals X‐irradiated Sn⁺ and Pb⁺ centres in the P‐state are observed. The ²S_1/2 state Pb³⁺ centres are found to have anisotropic hyperfine interaction constants.

This publication has 7 references indexed in Scilit:

EPR, optical absorption, and luminescence of anisotropic copper centres in KCI
Physica Status Solidi (b), 1977
${Sn}^{+}$ centers and thermal motion of associated vacancies in KCl:Sn ${Cl}_{2}$
Physical Review B, 1976
ESR Investigations of Sn+Centres in KC1
Physica Status Solidi (b), 1974
Roothaan-Hartree-Fock atomic wavefunctions
Atomic Data and Nuclear Data Tables, 1974
New Paramagnetic Silver Centres in KCl Crystals
Physica Status Solidi (b), 1971
Pb++ as a hole trap in KCl: ESR and optical absorption of Pb+++
Solid State Communications, 1970
Electron Spin Resonance of Tl⁺⁺ Centres in KCl Crystals
Physica Status Solidi (b), 1967