Abstract

PbF 2 doping is known to affect significantly the scintillating properties of PbWO 4 single crystal, yet the nature of the extrinsic defects so induced remains unclear. In this paper, complex impedance spectroscopy was used to study the dielectric relaxation of PbF 2 -doped PWO crystals and provided information on its dipole relaxation and evidence for its defect complexes [2(F o 2- )•-V Pb ].

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