Multicomponent oxides with perovskite type of structure containing up to 10 different cations in equiatomic amounts have been synthesised for the first time. Out of eleven systems synthesised, only six systems crystallised as single phase perovskite type compounds with random and homogenous cation distribution on the respective sites. The formation of phase pure 10-cationic system, (Gd_0.2La_0.2Nd_0.2Sm_0.2Y_0.2)(Co_0.2Cr_0.2Fe_0.2Mn_0.2Ni_0.2)O₃, in contrast to the multiphase mixtures observed in five of the lower entropy systems (containing 6 cations) indicates a possible role of entropy in the stabilisation of a single phase crystal structure. The entropy driven structural stabilisation effect is further supported by the reversible phase transformation, from single phase to multiple phase upon cyclic heat treatment, observed in the (Gd_0.2La_0.2Nd_0.2Sm_0.2Y_0.2)MnO₃ system. This type of entropic signature has been observed in rocksalt based high entropy oxide systems. However, it has not been reported before for perovskite based compounds, as shown in this study.

首次合成了钙钛矿型结构的多组分氧化物，其中最多包含10个等原子量的阳离子。在合成的11个系统中，只有6个系统结晶为单相钙钛矿型化合物，在相应位点上具有随机且均一的阳离子分布。相纯10阳离子体系的形成，（Gd _0.2 La _0.2 Nd _0.2 Sm _0.2 Y _0.2）（Co _0.2 Cr _0.2 Fe _0.2 Mn _0.2 Ni _0.2）O ₃与在五个较低的熵体系（包含6个阳离子）中观察到的多相混合物相反，表明熵在稳定单相晶体结构中可能发挥作用。在（Gd _0.2 La _0.2 Nd _0.2 Sm _0.2 Y _0.2）MnO ₃体系中观察到，在循环热处理后，从单相到多相的可逆相变进一步支持了熵驱动的结构稳定作用。在基于岩盐的高熵氧化物体系中已经观察到这种类型的熵特征。但是，如本研究所示，以前没有报道过钙钛矿基化合物。