Solid solutions of the type (Li_xAg_1-x)NbO₃ with x = 0.00, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09 and 0.10 have been synthesized by a mixed oxide route. The samples were characterized by synchrotron X-ray diffraction (S-XRD), neutron powder diffraction (NPD) and Raman spectroscopy. Rietveld refinements against both the S-XRD and NPD data shows that pure AgNbO₃ crystalizes in orthorhombic, Pmc2₁ space group with a unit cell $\sqrt{2}$ a_p$\times \sqrt{2}$ a_p$\times$ 4a_p (where a_p is the fundamental perovskite lattice parameter). The sample with x = 0.10 has rhombohedral $R3c$ symmetry with a $\sqrt{2}{a}_p\times \sqrt{2}{a}_p\times \sqrt{12}{a}_p$ unit cell. The composition induced orthorhombic to rhombohedral phase transition starts at x ~ 0.05 and is complete by x ~ 0.07. Both phases are present in the region 0.05 ≤ x ≤ 0.07. The Raman spectra were consistent with the S-XRD and NPD data thereby confirming the onset of the structural phase transition in the region 0.05 ≤ x ≤ 0.07. Temperature dependent S-XRD measurements of AgNbO₃ revealed the phase transition sequence to be $\mathit{Pmc}{2}_1\underset{~340k}{\leftrightarrow }\mathit{Pbcm}\underset{~630}{\leftrightarrow }\mathit{Cmcm}\underset{~650K}{\leftrightarrow }P4/\mathit{mbm}\underset{~880}{\leftrightarrow }\mathit{Pm}\bar{3}m$.

所述类型的固体溶液（锂_X的Ag _1-x ）的NbO ₃与X = 0.00，0.01，0.02，0.03，0.04，0.05，0.06，0.07，0.08，0.09和0.10是由混合氧化物合成路线合成。通过同步加速器X射线衍射（S-XRD），中子粉末衍射（NPD）和拉曼光谱对样品进行表征。针对S-XRD和NPD数据的Rietveld改进表明，纯AgNbO ₃在具有晶胞的正交晶体Pmc2 ₁空间群中结晶$\sqrt{\mathrm{2个}}$一个_p$\times \sqrt{\mathrm{2个}}$一个_p$\times$4a _p（其中_p是钙钛矿的基本晶格参数）。x = 0.10的样品具有菱面体$\mathrm{[R}3C$ 与一个对称 $\sqrt{\mathrm{2个}}{\mathrm{一个}}_p\times \sqrt{\mathrm{2个}}{\mathrm{一个}}_p\times \sqrt{12}{\mathrm{一个}}_p$晶胞。诱导正交于菱面体晶相转变，组合物开始于X〜0.05，是通过完全X〜0.07。两相都存在于区域0.05≤ X ≤0.07。拉曼光谱与所S-XRD和NPD数据从而确认在该区域0.05≤结构相变的开始一致的X ≤0.07。AgNbO _3的温度依赖性S-XRD测量表明相变序列为$\mathit{微机}{\mathrm{2个}}_{\mathrm{1个}}\underset{〜340ķ}{\leftrightarrow }\mathit{铅}\underset{〜630}{\leftrightarrow }\mathit{厘米}\underset{〜650ķ}{\leftrightarrow }P4/\mathit{mbm}\underset{〜880}{\leftrightarrow }\mathit{下午}\bar{3}米$。