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对CeO_2－Mgo－ZrO_2系固溶体的XPS和XRD研究结果表明：在1700℃烧结和随后的1200℃处理过程中，Ce4十被还原成Ce3＋．离子半径的差别使立方相的晶格常数增大，氧的结合能增大，镁的结合能减小热处理时，Ce离子在MgO编析后仍稳定存在于ZrO2晶格中，使立方ZrO2发生与传统Mg－PSZ不同的分解反应：c-ZrO2→c′－ZrO2＋t－ZrO2＋MgO．
XPS and XRD results of CeO_2-Mgo-ZrO_2 solid solution show that during the sintering at 1700 ℃ and the subsequent treatment at 1200 ℃, Ce_ (10) is reduced to Ce_ (3). The difference of the ionic radius increases the lattice constant of the cubic phase, the binding energy of the oxygen increases, and the binding energy of the magnesium decreases. In the heat treatment, the Ce ions are still stably present in the ZrO2 lattice after the analysis of MgO, Different from the traditional decomposition of Mg-PSZ reaction: c-ZrO2 → c’-ZrO2 + t-ZrO2 + MgO.