近年的研究顯示高熵材料不再僅限於金屬，高熵也可使多元陶瓷在高溫形成穩定的單一結構。先前研究提出的高熵氧化物為(Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O，並證實此系統在高溫下是氯化鈉型結構的單一相，各元素分布均勻，且在不同溫度具單相與多相的可逆相變化。為了在有限的溫度區間觀察到較多現象，本研究採用化學法來製備高熵氧化物的粉末，成功將(Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O的相轉換溫度降低。探討高熵氧化物方面，本研究嘗試減少(Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O的成分，發現(Mg0.25Ni0.25Cu0.25Zn0.25)O也符合高熵材料的條件與特性，並觀察到兩種高熵氧化物在低溫的析出相皆為氧化銅。接著量測上述兩個高熵陶瓷在單相與多相結構時的介電性質、微結構、價態、電阻率、以及活化能，比較並探討之間的差異，找出這兩個高熵陶瓷系統可能的應用。

Entropy-stabilized oxide systems with four and five cations have been synthesized by the thermal decomposition of a metal–nitrate–citrate complex at 800-925 °C. A five-component oxide (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O is found to exhibit a reversible transformation between a multi-phase and single-phase state at elevated temperatures. Experimental results show that the cations in the single-phase state with a rocksalt structure are distributed homogeneously. The phase transformation temperature is reduced for the powders synthesized by a wet chemical reaction route. Similar results are also observed in the four-component oxide (Mg0.25Ni0.25Cu0.25Zn0.25)O. Effects of chemical compositions and phase formation on physical properties of the above entropy-stabilized oxide systems are investigated.

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