[1] D.L.Griscom and R.E.Griscom: J. Chem. Phys., 1967,47, 2711. [2] R.D.Dowsing and J.F.Gibson: J. Chem. Phys., 1969,50, 294. [3] P.C.Taylor and P.J.Bray: J. Chem. Phys. Solids,1972, 52, 147. [4] I.Ardelean, Gh. Ilonca and M.Peteanu: Solid StateCommun., 1984, 52, 147. [5] D.Loveridge and S.Parke: Phys. Cbezn. Ghaes, 1971,12, 19. [6] J.W.Schreurs: J. Chem. Phys., 1978, 69, 215. [7] M.Peteanu, I.Ardelean and A.Nicula: Rev. Roum.Pbys., 1983, 28, 147. [8] I.Ardelean, M.Peteanu and Gh.Ilonca: Phys. Stat.Sol. (a), 1983, 58, K33. [9] I.V.Chepeleva, E.A.Zhilinskaa, V.N.Lazukin,A.P.Cernov and V.I.Olkhovskii: Phys. Stat. Sol.(b), 1977, 82, 189. [10] B.Petrova, M.Frumar, E.Cernoskova and V.Cerny: J.Non-Cryst. Solids, 1993, 161, 316. [11] V.Cerny, B. Frumarova-Petrova, J. Rosa, I. L. Lieholitand M.numar: J. Non-Cryst. Solids, 1995, 192~193,165. [12] Gh.Ilonca, I.Ardelean and O.Cozar: J. Phyique, 1988,49, 8. [13] I.Ardelean, Gh.Ilonca and O.Cozar: Rev. Roum.Phy., 1988, 33, 179. [14] I.Ardelean, M.Peteanu, V.Simon, S.Simon andM.Flora: Phys. Chem. Glasses, (to be published). [15] I.Ardelean, M.Peteanu, S.Filip and D.Alexandru: J.Mag. Mag. Mater., 1996, 157, 13. [16] I.Ardelean, M.Peteanu, S.Filip, V.Simon and I.Todor:Solid State Commun., 1998, 105, 339. [17] I.Ardelean, Gh.Ilonca, V.Simon, o.Cozar, V.Ioncuand S.Filip: Solid State Commun., 1996, 98, 651. [18] C.Dayanand, R.V.G.K.Sarma, G.Bhikshamaian andM.Salagram: J. Non-Cryst. SolidS, 1994, 167, 122. [19] B.C.Sales and L.A.Boatmer: Science, 1984, 226, 45;Mater. Lett., 1984, 2, 301. [20] A.J.Bourdillon, F.Khumalo and J.Bordas: Philos.Mag., 1978, B37, 731. [21] K.J.Rao, B.G.Rao and S.R.Elliott: J. Mater. Sci.,1985, 20, 1678. [22] J.Robertson: Philos. Mag., 1981, B43, 497. [23] P.J.Bray, A.E.Geissberger, F.Bucholtz and I.A.Harns:J. Non-Cmt. Solids, 1982, 52, 45. [24] A.Klonkowski: Pfor. Chem. Glasses, 1985, 26, 31. [25] C.Dazanad, G.Bhikshamaiah, V.Jaja Tyagaraju,M.Salagram and A.S.Krishna Mwty: J. Mater. Sc.,1996, 31, 1945. [26] D.L.Griscom: J. Non-Cryst. Solids, 1990, 125, 17. [27] J.Kliava and J.J.Purans: Phy. Stat. Sol. (a), 1979,55, K59. [28] I.V.Chepeleva: DAN SSSR, 1972, 202, 1042. [29] I.Ardelean, O.Cozar, V.Simon and V.Mih: Balc.Pbys. Lett., 1997, 5, 876. [30] R.W.Kedzie, D.H.Lyons and M.Kestingian: Phys.Rev. A, 1965, 138, 918. [31] M.Peteanu and Al.Nicula: Studii si Cercet. de Fizica,1988, 49, 8. [32] I.Ardelean, Gh.Ilonca, M.Peteanu and D.Pop: Solid.State Commun., 1980, 33, 653.a |