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首页> 外文期刊>Materials Science and Engineering >Influence of zinc oxide addition on LnTiTaO_6 (Ln = Pr, Sm and Dy) materials for dielectric resonators
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Influence of zinc oxide addition on LnTiTaO_6 (Ln = Pr, Sm and Dy) materials for dielectric resonators

机译：氧化锌的添加对介电共振器中LnTiTaO_6（Ln = Pr，Sm和Dy）材料的影响

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摘要

LnTiTaO_6 ceramics, doped with ZnO, were prepared in the solid-state ceramic route. The cylindrical samples were sintered at temperatures between 1360 and 1575℃. The densities were measured using Archimedes method. Samples were characterized by X-ray diffraction and scanning electron microscopic methods. Microwave dielectric properties of the cylindrical samples were measured using cavity resonator method. Doping of ZnO reduced the sintering temperature. The dielectric constant (ε_r) increases for smaller doping concentrations and decreases when the doping is higher. The variation of temperature coefficient of resonant frequency (τ_f) decreases on smaller doping and increases on higher doping concentrations. The quality factor of all these samples are good enough for practical applications. Considerable grain growth is also observed in doped samples.
机译：以固态陶瓷路线制备了掺杂有ZnO的LnTiTaO_6陶瓷。圆柱形样品在1360至1575℃之间的温度下烧结。使用阿基米德法测量密度。通过X射线衍射和扫描电子显微镜方法对样品进行表征。使用腔谐振器方法测量圆柱形样品的微波介电性能。 ZnO的掺杂降低了烧结温度。对于较小的掺杂浓度，介电常数（ε_r）增加，而在较高的掺杂浓度下，介电常数（ε_r）减小。谐振频率温度系数（τ_f）的变化在较小掺杂时减小，而在较高掺杂浓度时增大。所有这些样品的品质因数足以满足实际应用。在掺杂样品中也观察到相当大的晶粒长大。

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