【摘要】 研究了掺杂Nd和在不同气氛中烧结对BiNbO4材料烧结特性及微波介电性能的影响。结果表明,掺杂Nd虽然会提高BiNbO4材料的介电常数εr,但会降低材料的微波介电性能。在O2和N2中烧结可获得烧结致密和较高εr的材料,但微波介电性能显著下降。在空气中,870℃烧结的Bi0.99Nd0.01NbO4材料有最佳的性能,即烧结密度ρ=6.947g/cm3,εr=42.84,Q×f=18 162(Q为品质因数,f为频率),谐振频率温度系数τf=3.18×10-6/℃。更多还原

【Abstract】 In this work,sinterability and microwave dielectric properties of BiNbO₄ materials doped Nd under different sintering atmosphere were studied.The investigation results showed that microwave dielectric properties of BiNbO₄ were deteriorate by doping Nd,although dielectric constants were increased.Materials sintered in O₂ and N₂ atmosphere have better sintering property and high ε_r,but microwave dielectric properties were impaired.Bi_0.99Nd_0.01NbO₄ material,sintering at 870 ℃ in air,exhibits the excellent properties: ρ=6.947g/cm³,ε_r=42.84,Q×f=18 162,τ_f=3.18×10^-6/℃更多还原