New layered 1:1 mixed Ba 2+ /Ti 4+ metal phosphonates, BaTi(O 3 PC 6 H 5 ) 3 and SrTi(O 3 PC 6 H 5 ) 3, have been prepared via a hydrothermal route, in which mixed metal oxides, BaTiO 3 and SrTiO 3, were reacted with phenyl phosphonic acid. The mixed-metal phosphonates were combined with polystyrene (PS) via a solution route and cast as thin films for dielectric permittivity measurements. The composites exhibit an enhancement in the dielectric permittivity as a function of weight loading relative to the parent mixed metal oxide−PS composites.
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Barber et al. (2009) studied this question.
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