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Electron Spin Resonance Study of Ni 2+ Centers in AgCl(Cu, Ni)
Author(s) -
van Robbroeck L.,
Bouwen A.,
Schoemaker D.
Publication year - 1985
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221320230
Subject(s) - tetragonal crystal system , orthorhombic crystal system , electron paramagnetic resonance , materials science , crystallography , spin (aerodynamics) , resonance (particle physics) , electron , condensed matter physics , nuclear magnetic resonance , crystal structure , chemistry , atomic physics , physics , quantum mechanics , thermodynamics
Single AgCl crystals doped with Cu 2+ and Ni 2+ were studied by means of electron spin resonance. As grown crystals contain three different Ni 2+ centers which reduce to Ni + defects under illumination at 50 K with blue light. Six Ni + defects were found with tetragonal, orthorhombic, and cubic symmetry. At 101 K the orthorhombic centers transform to the tetragonal defects. The latter become thermally unstable at 135 K and induce the decay of the Cu 2+ centers.