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