Laser Spectroscopy of Defect Chemistry in Conducting Materials |
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Page 16
... interac- tion between an interstitial ion and a lattice vacancy causes the formation of the Frenkel defects to become cooperative and results in a reduction of the activation energy . Rice et al . [ 146 ] considered the interaction of ...
... interac- tion between an interstitial ion and a lattice vacancy causes the formation of the Frenkel defects to become cooperative and results in a reduction of the activation energy . Rice et al . [ 146 ] considered the interaction of ...
Page 28
... interac- tion between defects prevents the displaced ions from residing anywhere for more than about a vibration period and annihilates the cube - center sites . For this model of the superionic phase of the fluorites , the fraction of ...
... interac- tion between defects prevents the displaced ions from residing anywhere for more than about a vibration period and annihilates the cube - center sites . For this model of the superionic phase of the fluorites , the fraction of ...
Common terms and phrases
absorption activity addition anion annealing temperature assigned band behavior blue CaF2 caused Cd metal charge clusters cm¯¹ coefficient conductivity constant conversion correspond crystal crystal annealed cubic cubic site decrease defect delay dependence diffuse dimer disorder dissociated distribution dopant concentration doped effects electrons energy transfer Er³ Er3+ excitation and fluorescence excitation spectra excitation spectrum monitoring field Figure fluorescence spectra fluorescence transient fluoride fluoride ions function heat higher temperatures important impurity increases indicated intensity interactions interstitial ionic laser lattice levels lifetimes lines major manifold material measurements mechanism monitoring observed obtained PbF2 peaks phase phonon processes proposed quenched rare earth ions ratio relative relaxation result sample scavenging semiconducting shown in Figure single specific spectrum studied suggested superionic symmetry Table tion transition transition monitoring transition temperature vacancies vacuum Wavelength weak