By the example of the Dy_0.2Sr_0.8CoO_3-δ compound undergoing an order–disorder phase transition with increasing temperature, we demonstrate a significant dependence of the kinetic properties on the morphology of the internal spatially inhomogeneous structure, which forms in the sample depending on the rate of its transition from the high-temperature disordered cubic phase to the ground tetragonal ordered phase upon cooling. The results of transmission electron microscopy visualization of the spatially inhomogeneous state in the Dy_0.2Sr_0.8CoO_3-δ ceramic samples are presented and compared with the X-ray diffraction data.

中文翻译：

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Dy _0.2 Sr _0.8 CoO ₃ -δ稀土钴氧化物固溶体中的有序-无序转变：结构和热电性质

以Dy _0.2 Sr _0.8 CoO _3- δ化合物随温度升高经历有序-无序相变为例，我们证明了动力学特性对内部空间不均匀结构形态的显着依赖，内部空间不均匀结构的形态取决于样品冷却后从高温无序立方相到研磨的四方有序相的转变速率。给出了Dy _0.2 Sr _0.8 CoO _3- δ陶瓷样品中空间不均匀状态的透射电子显微镜可视化结果，并将其与X射线衍射数据进行了比较。