-
[1]
Wegh R T, Donker H, Meijerink A et al. Phys. Rev., 1997, B56 (21):138412 Srivastava A M, Beers W W. J. Lumin, 1997, 71:2853 Pappalardo R. J. Lumin, 1976,14:159.4 Sommerdijk J L, Bril A, de Jager A W. J. Lumin, 1974, 8:3415 Wegh Rene T, Donker Harry, Meijerink Andries et al. Science, 1999, 283:6636 Krupa J C, Mayolet A, Queffelec M. Ann. Chim. Sci. Mat., 1998, 23:4317 Veenis A W, Bril A, Philips J. Res,1978, 33:1248 XUN Xiu-Mei, FENG Shou-Hua, WANG Jun-Zuo et al. Chem.1997, 9:29669 Krupa J C, Queffelec M. J. Alloys Comps,1997, 250:28710 Szczurek T, Schlesinger M. Rare Earths Spectroscopy. Edited by B.Jezowska- Trebiatowska, J. Legendziewicz, W. Strek, Singapore, World Scientific, 1985, 30911 Schlesinger M, Szczurek T, Drake G W F. Solid State Commun., 1978, 28:16512 Noel Martin, Philippe Boutinaud, Rachid Mahiou et al, J. Mater. Chem., 1999, 9:12513GUO F Y, HUANG X H, YAO G Q. Chinese J. Inorg. Chem., 1995, 11:10914 YANG Z, LIN J H, SU M Z. Mater. Res. Bull., 2000, 35:2173