Growth and physical properties of Sr x Ba 1-x Nb 2 O 6 (x = 0.60, 0.75) single crystals

(60SBN) and (75SBN) single crystals were grown by Czochralski method. Growing direction was , and as-grown crystals has well-developed (001) plane. Temperature- and frequency dependence of dielectric constant represent relaxor ferroelectrics. 60SBN has wider optical transmittance than 75SBN.