26 April 1996 Fluoridated piezoelectric ceramics for power transducer
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The fluoridation of anionic sites in the perowskite lattice ABO3 can greatly stabilize the remanent polarization under high stresses level. The dielectric losses are smaller than oxygen deficient materials. The mechanism for stabilization is always allocated to sites which can act either as electron donors or acceptors. The charge transfer induces a polarization which is sufficient to cancel the distribution of bound charge ((rho) equals -divP) in the poled phase. The B3+ - F1- couples constitute dipoles which have a better stability than the B3+ - V0 couples only present in perowskite ceramics with oxygen vacancies.
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Lucien Eyraud, Lucien Eyraud, Paul Eyraud, Paul Eyraud, Paul Gonnard, Paul Gonnard, David Audigier, David Audigier, "Fluoridated piezoelectric ceramics for power transducer", Proc. SPIE 2779, 3rd International Conference on Intelligent Materials and 3rd European Conference on Smart Structures and Materials, (26 April 1996); doi: 10.1117/12.237178; https://doi.org/10.1117/12.237178

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