Layered rare earth hydroxide, anion exchange material and a fluorescent material using the same

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PROBLEM TO BE SOLVED : To provide a layered rare earth hydroxide having a highly symmetric crystal structure and high crystallinity and to provide an anion-exchange material and a fluorescent material using it. SOLUTION : The layered rare earth hydroxide is characterized by having a compositional formula of RE(OH)2.5Z0.5-0.125XH2O (wherein, 6COPYRIGHT : (C)2009, JPO&INPIT