[1] Y.Kanke, E.Takayama-Muromachi, K.Kato andY.Matsui: J. Solid State Chem., 1990, 89, 130. [2] Y.Uchida, Y.Kanke, E.Takayama-Muromachi andK.Kato: J. Phys. Soc. Jpn., 1991, 60, 2530. [3] Y.Kanke, F.Izumi, Y.Mori, E.Akiba, S.Funahashi,K.Kato, M.Isobe, E.Takayama-Muromachi andY.Uchida: J. Solid State Chem., 1994, 112, 429. [4] M.E.De Roy, J.P.Besse, R.Chevalier and M.Gasperin:J. Solid State Chem., 1987, 67, 185. [5] Y.Kanke, F.Izumi, E.Takayama-Muromachi, K.Kato,T.Kamiyama and H.Asano: J. Solid State Chem.,1991, 92, 261. [6] J.P.Attfield: Nature, 1990, 46, 343. [7] J.Wong, F.W.Lytle, R.P.Mesmer and D.H.Maylotte:Phys. Rev., 1984, B30, 5596. [8] D.Altermatt and I.D.Brown: Acta Cryst., 1985, B41,240. [9]I.D.Brown: J. Solid State Chem., 1989, 82, 122. [10] N.E.Brese, M.O'Keeffe: Acta Cryst., 1991, B47, 192. [11] Y.Kanke, K.Kato, E.Takayama-Muromachi andM.Isobe: Acta Cryst., 1992, C48, 1376. [12] Hongchao LIU, Changlin GUO and Hengyong TU:Chinese Science Bulletin, 1997, 42, 850. (in Chinese) [13] Hongchao LIU, Changlin GUO: Progress in Physics,1996, 16, 228. (in Chinese)C |