Ba0.5Sr0.5TiO3　particles　with　perovskite　phase　were　successfully　synthesized　by　molten　salt　assisted　co-precipitation　using　inexpensive　TiOSO4　as　raw　material.　The　effect　of　the　amount　of　molten　salt　on　the　formation,　morphology,　and　dielectric　properties　of　Ba0.5Sr0.5TiO3　particles　was　investigated.　Ba0.5Sr0.5TiO3-polyaniline　(PANI)　hybrid　particles　were　then　synthesized　by　in　situ　polymerization　of　aniline　with　Ba0.5Sr0.5TiO3.　The　obtained　Ba0.5Sr0.5TiO3-PANI　hybrid　particles　were　characterized　through　thermogravimetry　(TG),　X-ray　diffraction　(XRD),　Fourier-transform-Infrared　(FT-IR)　and　scanning　electron　microscopy　(SEM).　The　three-phase　composites　by　incorporating　Ba0.5Sr0.5TiO3-PANI　hybrid　particles　in　Polystyrene　(PS)　matrix　were　demonstrated.　SEM　showed　that　the　Ba0.5Sr0.5TiO3-PANI　hybrid　particles　were　distributed　in　the　continuous　PS　matrix　heterogeneously　without　obvious　aggregation.　Moreover,　the　glass　transition　temperature　and　thermal　stability　of　composites　were　improved　with　the　addition　of　hybrid　particles.　The　three-phase　composites　were　attractive　candidate　as　embedded　capacitors.　©　2014　Elsevier　Ltd　and　Techna　Group　S.r.l.　All　rights　reserved.