Abstract Ca0.66Ti0.66Nd0.34Al0.34O3(CTNA) ceramics were prepared by solid-state reaction method and their sintering behavior, microwave dielectric properties, and microstructure were investigated. CTNA ceramics were examined by Raman scattering to reveal the correlation of perovskite structure with the microwave properties. It found that the area of peak A1g(O) stretch mode reflects the quality factor Q × f value in the perovskite materials. This concludes that the oxygen octahedron plays an important role of the material's microwave performance. Sintering temperature affected the unit cell volume and the lattice parameters of the CTNA ceramics, the grain size distribution, the Gibbs free energy, the thermal expansion coefficient (CTE), and the dielectric properties (er, Q×f, τf). The samples sintered at 1500 °C displayed the best dielectric constant and Q×f, as 44.94 and 41922.22 GHz, respectively.

中文翻译：

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微观结构和拉曼散射揭示Ca0.66Ti0.66Nd0.34Al0.34O3陶瓷的烧结行为和微波介电性能

摘要 采用固相反应法制备了Ca0.66Ti0.66Nd0.34Al0.34O3(CTNA)陶瓷，并对其烧结行为、微波介电性能和微观结构进行了研究。通过拉曼散射检查 CTNA 陶瓷以揭示钙钛矿结构与微波特性的相关性。结果表明，峰 A1g(O) 拉伸模式的面积反映了钙钛矿材料中的品质因数 Q × f 值。这得出结论，氧八面体在材料的微波性能中起着重要作用。烧结温度影响 CTNA 陶瓷的晶胞体积和晶格参数、晶粒尺寸分布、吉布斯自由能、热膨胀系数 (CTE) 和介电性能 (er, Q×f, τf)。