Abstract
Co-doped Pb(Mg1/3Nb2/3)O3–32PbTiO3 (Co-doped PMN–32PT) single crystals were grown by a flux method. The phase structure, dielectric, piezoelectric, ferroelectric and magnetodielectric coupling properties of the crystals were characterized. The result of X-ray diffraction showed Co-doped PMN-32PT single crystal was perovskite phase. The dielectric properties of the Co-doped PMN-32PT single crystal along [001]-orientation has a higher rhombohedral-tetragonal phase transition temperature (Trt~107 °C) and larger coercive field (EC~7.91 kV/cm) than the [001] oriented PMN-32PT single crystal. The piezoelectric constant d33 is 1200 pC/N. Meanwhile, Under the external magnetic field, Co-doped PMN-32PT single crystal has negative magnetodielectric coupling effect.
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