It is an object of the present invention to provide a novel composite oxide which exhibits excellent oxygen absorbing and desorbing capability particularly at {TAIL ~ low temperatures}, and which can be used as a co catalyst for a catalyst for purifying exhaust gases and as {HEAD ~ functional ceramics} 
It is an object of the present invention to provide a novel composite oxide which exhibits excellent oxygen absorbing and desorbing capability particularly at { TAIL ~ low temperatures } , and which can be used as a co catalyst for a catalyst for purifying exhaust gases and as { HEAD ~ functional ceramics }
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