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采用掺杂Sc_2O_3,通过固相反应法制备了CaZr_(1-x)Sc_xO_(3-α)(x=0,0.1,0.15)材料.在610-850℃采用交流阻抗谱法测定了CaZr_(1-x)Sc_xO_(3-α)的电导率及电导激活能,并对CaZrO_3掺Sc及掺In样品的电学性能进行了比较.结果表明:在610-850℃,CaZrO_3的电导率为4.3×10~(-19)-1.4×10~(-6)S/cm,CaZr_(1-x)Sc_xO_(3-α)(x=0.1,0.15)的电导率为1.16×10~(-4)-1.4×10~(-3)S/cm,CaZr_(1-x)In_xO_(3-α)(x=0.1,0.15)的电导率为0.34×10~(-4)-4.33×10~(-4)S/cm,且随着温度的升高而提高;掺杂能极大提高CaZrO_3的电导率,并随着掺杂量的增加,电导激活能降低,电导率增加;温度及掺杂量相同时,掺Sc材料电导率明显高于掺In材料,说明掺Sc对提高材料的电导率更有效.
The CaZr_ (1-x) Sc_xO_ (3-α) (x = 0,0.1,0.15) materials were prepared by the solid-state reaction method with Sc_2O_3 doping.At the same time, -x) Sc_xO_ (3-α), and the electrical properties of CaZrO_3 doped with Sc and doped In were compared.The results show that the electrical conductivity of CaZrO_3 at 610-850 ℃ is 4.3 × 10 The conductivity of CaZr_ (1-x) Sc_xO_ (3-α) (x = 0.1,0.15) was ~ 1.16 × 10 ~ (-6) S / The electric conductivity of CaZr_ (1-x) In_xO_ (3-α) (x = 0.1,0.15) was 0.34 × 10 -4 -3.33 × 10 ~ (-1) 4) S / cm, and increases with the increase of temperature; doping can greatly improve the conductivity of CaZrO_3, and as the doping amount increases, the conductivity activation energy decreases, the conductivity increases; temperature and doping amount At the same time, the conductivity of Sc-doped material is obviously higher than that of In-doped material, which indicates that Sc-doped material is more effective to improve the conductivity of the material.