A method of manufacturing a vanadium oxide ceramic rare earth

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PROBLEM TO BE SOLVED : To provide a cooling storage material which has a large heat capacity in the vicinity of 2K and does form fine powder, and the like, even when a freezer is operated for a long time. SOLUTION : The GdVO4cooling storage material is produced by calcining GdVO4powder containing 50 to 1000 wt. ppm of Al2O3at 1, 500 to 1, 700°C for 1 to 10 hours. COPYRIGHT : (C)2004, JPO