[[1] ZALLEN R., PENCHINA C.M., Am. J. Phys., 54 (1986), 862.10.1119/1.14422]Search in Google Scholar
[[2] BURINA A., LECANTE P., MOSSET A., GALY J., TONNERRE J.M., RAOUX D., J. Non-Cryst. Solids, 212 (1997), 23.10.1016/S0022-3093(96)00649-7]Search in Google Scholar
[[3] TITUS S.S.K., ASOKAN S., RAMAKRISHNA R., GOPAL E.S.R., Philos. Mag. B, 62 (1990), 553.10.1080/13642819008215252]Search in Google Scholar
[[4] ENDO H., HOSHINO H., IKEMOTO H., MIYANAGA T., J. Phys-Condens. Mat., 12 (2000), 6077. 10.1088/0953-8984/12/28/306]Search in Google Scholar
[[5] KASEMAN D.C., HUNG I., LEE K., KOVNIR K., GAN Z., AITKEN B., SEN S., J. Phys. Chem. B, 119 (2015), 2081.10.1021/jp5123618]Search in Google Scholar
[[6] SEDDON A.B., J. Non-Cryst. Solids, 184 (1995), 44.10.1016/0022-3093(94)00686-5]Search in Google Scholar
[[7] DAVIS E.A., MOTT N.F., Philos. Mag., 22 (1970), 0903.10.1080/14786437008221061]Search in Google Scholar
[[8] TVERJANOVICH A., YAGODKINA M., STRYKANOV V., J. Non-Cryst. Solids, 223 (1998), 86.10.1016/S0022-3093(97)00433-X]Search in Google Scholar
[[9] FAIGEL GY., GRANASY L., VINCZE I., DE WAARD H., J. Non-Cryst. Solids, 57 (1983), 411.10.1016/0022-3093(83)90428-3]Search in Google Scholar
[[10] TOSCANI S., DUGUE J., CEOLIN R., Thermochim. Acta, 196 (1992), 191.10.1016/0040-6031(92)85019-R]Search in Google Scholar
[[11] HAFIZ M.M., MOHARRAM A.H., ABU-SEHLY A.A., Appl. Surf. Sci., 115 (1997), 203.10.1016/S0169-4332(96)01088-4]Search in Google Scholar
[[12] MURUGAVEL S., ACHARYA K.V., ASOKAN S., J. Non- Cryst. Solids, 191 (1995), 327.10.1016/0022-3093(95)00302-9]Search in Google Scholar
[[13] QUINN R.K., Mater. Res. Bull., 9 (1974), 803.10.1016/0025-5408(74)90116-0]Search in Google Scholar
[[14] TITUS S.S.K., ASOKAN S., GOPAL E.S.R., Solid State Commun., 83 (1992), 745.10.1016/0038-1098(92)90156-4]Search in Google Scholar
[[15] CORNET J., ROSSIER D., J. Non-Cryst. Solids, 12 (1973), 85.10.1016/0022-3093(73)90056-2]Search in Google Scholar
[[16] CORNET J., ROSSIER D., J. Non-Cryst. Solids, 12 (1973), 61.10.1016/0022-3093(73)90055-0]Search in Google Scholar
[[17] KIM S., KIM H., CHOI S., J. Alloy. Compd., 667 (2016), 91.10.1016/j.jallcom.2016.01.146]Search in Google Scholar
[[18] JOVARI P., LUCAS P., YANG Z., BUREAU B., KABN I., BEUNEU B., PANATLEI C., BEDNARCIK J., J. Non-Cryst. Solids, 433 (2016), 1.10.1016/j.jnoncrysol.2015.11.003]Search in Google Scholar
[[19] LUCAS P., COLEMAN G.J., KASEMAN D.C., YANG Z., HUNG I., GAN Z., SEN S., J. Non-Cryst. Solids, 432 (2016), 527.10.1016/j.jnoncrysol.2015.11.010]Search in Google Scholar
[[20] TVERJANOVICH A., RODIONOV K., BYCHKOV E., J. Solid State Chem., 190 (2012), 271.10.1016/j.jssc.2012.02.044]Search in Google Scholar
[[21] DONGOL M., HAFIZ M.M., ABOU-ZIED M., ELHADY A.F., Appl. Surf. Sci., 185 (2001), 1.10.1016/S0169-4332(01)00394-4]Search in Google Scholar
[[22] MANIKANDAN N., ASOKAN S., J. Non-Cryst. Solids, 353 (2007), 1247.10.1016/j.jnoncrysol.2006.10.055]Search in Google Scholar
[[23] EIFERT J.R., PERETTI E.A., J. Mater. Sci., 3 (1968), 293.10.1007/BF00741964]Search in Google Scholar
[[24] PATTERSON A.L., Phys. Rev., 56 (1939), 978.10.1103/PhysRev.56.978]Search in Google Scholar
[[25] ABDEL-RAHIM M.N., ABDEL-LATIF A.Y., SOLTAN A.S., Physica B, 291 (2000), 41.10.1016/S0921-4526(99)01873-6]Search in Google Scholar
[[26] ABDEL-RAHIM M.A., HAFIZ M.M., MAHMOUD A.Z., Chalcogenide Lett., 12 (2015), 263.]Search in Google Scholar
[[27] ALTERKOP B., PARKANSKY N., GOLDSMITH S., BOXMAN R.L., J. Phys. D, 36 (2003), 552.10.1088/0022-3727/36/5/320]Search in Google Scholar
[[28] PANKOVE J.I., Optical processes in semiconductors, Courier Corporation, 2012.]Search in Google Scholar
[[29] EL-NAHASS M.M., ZEYADA H.M., AZIZ M.S., MAKHLOUF M.M., Opt. Laser Technol., 39 (2007), 347.10.1016/j.optlastec.2005.07.004]Search in Google Scholar
[[30] ABDEL-RAHIM M.A., J. Phys. Chem.Solids, 60 (1999), 29.10.1016/S0022-3697(98)00250-9]Search in Google Scholar
[[31] ABDEL-RAHIM M.A., ABDEL-LAATIEF A.Y., RASHAD M., ABDELAZIM N.M., Mat. Sci. Semicon. Proc., 20 (2014), 27.10.1016/j.mssp.2013.12.035]Search in Google Scholar
[[32] AL-AGEL F.A., Nanoscale Res. Lett., 8 (2013), 1.10.1186/1556-276X-8-520402936524321447]Search in Google Scholar
[[33] EL-SEBAII A.A., KHAN S.A., AL-MARZOUKI F.M., FAIDAH A.S., AL-GHAMDI A.A., J. Lumin., 132 (2012), 2082.10.1016/j.jlumin.2012.03.046]Search in Google Scholar
[[34] URBACH F., Phys. Rev., 92 (1953), 1324.10.1103/PhysRev.92.1324]Search in Google Scholar
[[35] CHAUDHURI S., BISWAS S.K., CHOUDHURY A., GOSWAMI K., J. Non-Cryst. Solids, 54 (1983), 179.10.1016/0022-3093(83)90092-3]Search in Google Scholar
[[36] HASEGAWA S., KITAGAWA M., Solid State Commun., 27 (1978), 855.10.1016/0038-1098(78)90191-6]Search in Google Scholar
[[37] VINCENT R.K., HUNT G.R., Appl. Opt., 7 (1968), 53.10.1364/AO.7.00005320062405]Search in Google Scholar
[[38] GRAVESTEIJN D.J., Appl. Opt., 27 (1988), 736.10.1364/AO.27.00073620523672]Search in Google Scholar
[[39] WEMPLE S.H., Phys. Rev.B, 7 (1973), 3767.10.1103/PhysRevB.7.3767]Search in Google Scholar
[[40] ZEMEL J.N., JENSEN J.D., SCHOOLAR R.B., Phys. Rev., 140 (1965), A330.10.1103/PhysRev.140.A330]Search in Google Scholar
[[41] WALTON A.K., MOSS T.S., Proceed. Phys. Soc., 81 (1963), 509.10.1088/0370-1328/81/3/319]Search in Google Scholar