[[1] M.M. El-Desoky, J. Non-Cryst. Solids, 351 (2005) 3139-3146.]Search in Google Scholar
[[2] S.G. Motke, S.P. Yawale, S.S. Yawale, Bull. Mater. Sci. 25 (1), (2002) 75.10.1007/BF02704599]Search in Google Scholar
[[3] M.Nagaswa and H. Watanabe, 1971, UK Patent No. 1358930.]Search in Google Scholar
[[4] R.A. Montani, M. Levy, J. L. Souquet., (1992) J. Non-Cryst. Solids, 149, 249.]Search in Google Scholar
[[5] Aboutaleb and Safi, J Chem. Eng. Process Technol 2016, 7:1]Search in Google Scholar
[[6] P. Pacuta, R. Lungu, I. Ardelean., J.Mater.Sci. Mater, Electron., 21 (2010) 548-553.]Search in Google Scholar
[[7] S. Rada, R. Chelcea, E. Culea, J. Mater.Sci, 45 (2010) 6025-6029.]Search in Google Scholar
[[8] A. Al-Shahrani, A. Al-Hajru, M.M. ElDesoky, Phys. B 364 (2005) 248.10.1016/j.physb.2005.04.016]Search in Google Scholar
[[9] N. Nagaraja, T. Sankarappa, M. Prashant Kumar, J. Non-Cryst. Solids 354 (2008) 1503-1508.10.1016/j.jnoncrysol.2007.08.042]Search in Google Scholar
[[10] G. Srinivasa Rao, G. Thirumala Ral, B. Sailaja, P. Narayana Murthy, N. Madhu, R.V.S.S.N. Ravikumar, Int. J. Adv. Res. Phys. Sci. 2 (2015) 41-45.]Search in Google Scholar
[[11] S. Sindhu, S. Sanghi, A. Agarwal, VP Seth, N. Kishore, Spectrochim. Acta, Part A 64 (2006) 196-204.10.1016/j.saa.2005.06.039]Search in Google Scholar
[[12] P. Vasantharani, S. Neelayathashi alias Vichitra., J. App.Phy 9 (2017) 44-49.]Search in Google Scholar
[[13] Safeya Ibrahim, Mohamed Mahmoud Gomaa, Hussein Darwish, J. Adv. Ceramics 3(2) (2014) 155-164.10.1007/s40145-014-0107-z]Search in Google Scholar
[[14] E Mansour, J. Non-Cryst. Solids 357 (2011) 1364-1369.10.1016/j.jnoncrysol.2010.09.026]Search in Google Scholar
[[15] V.C. Veeranna Gowda, Physica B., 426 (2013) 58–64.]Search in Google Scholar
[[16] V. Kundu, R.L. Dhiman, A.S. Maan, D.R. Goyal, S. Arora, J. Optoelectr. Adv. Mater, 12 (12) (2010) 2373-2379.]Search in Google Scholar
[[17] Y.C. Ratanakaran, A.V. Reddy, J. Non-Cryst. Solids, 277 142 (2000).10.1016/S0022-3093(00)00297-0]Search in Google Scholar
[[18] M.M. EI-Desoky, A. Al-Shahrani, Phy. B 383 (2006) 163-170.10.1016/j.physb.2006.01.518]Search in Google Scholar
[[19] M.M. EI-Desoky, J. Non-Cryst. Solids, 351 (37-39) (2005) 3139-3146.10.1016/j.jnoncrysol.2005.08.004]Search in Google Scholar
[[20] S. Annamalai, R.P. Bhatta, I.L. Pegg, B. Dutta, J. Non-Cryst. Solids 358 (2012) 1380.10.1016/j.jnoncrysol.2012.03.016]Search in Google Scholar
[[21] E. Mansour, G. El-Damrawi, S. El-Maksoud, Y. Moustafa, H. Doweidar, Phys. Chem. Glasses 43 (02) (2002) 80.]Search in Google Scholar
[[22] Al-Shahrani, A. Al-Hajry, M.M. El-Desoky, Phys. Status Solidi (a) 200 (2) (2003) 37810.1002/pssa.200306689]Search in Google Scholar
[[23] A.A. Bahgat, Y.M. Abou-Zeid, Phys. Chem. Glasses 42 (6) (2001) 361.]Search in Google Scholar
[[24] S. Sindhu, S. Sanghi, A. Agrawal, V.P. Seth, N. Kishore, Spectrochim. Acta part A 64 (2006) 196-204.10.1016/j.saa.2005.06.039]Search in Google Scholar
[[25] V. Kundu, R.L. Dhiman, A.S. Maan, D.R. Goyal, S. Arora, J. Optoelectr. Adv. Mater, 12 (12) (2010) 2373-2379.]Search in Google Scholar
[[26] K.K. Som, B.K. Choudhuri, Phys. Rev. B 41 (3) (1990) 1581.10.1103/PhysRevB.41.1581]Search in Google Scholar
[[27] N. Nagaraja, T. Sankarappa, M. Prashant Kumar, J. Non-Cryst. Solids 354 (2008) 1503-1508.10.1016/j.jnoncrysol.2007.08.042]Search in Google Scholar
[[28] N.A. Eissa, A.G. Mostafa, I. Kashif, H.H. ElBahnasawy, E.K. Abdel-Khalek, H.A. Sallam, Al-Azhar Univ. Eng. J. (AUEJ) 8 January (4) (2005).]Search in Google Scholar
[[29] I.G. Austin, N.F. Mott, Adv. Phys. 18 (1969) 41.10.1080/00018736900101267]Search in Google Scholar
[[30] A.E. Owen, Prog. Ceram. Sci. (1963) 77.]Search in Google Scholar
[[31] Alexander MN, Onorato PIK., Struck CW, Rozen JR, Tasker GW, Uhlmann DR., J Non Cryst Solids. 1986; 79:137144.10.1016/0022-3093(86)90042-6]Search in Google Scholar
[[32] M.J. Gang, Y.J. Kim. S.J. Moon. S.J. Chung, D.J. Cha, New Phys. 28 (1988) 605 (In Korean, cited in PA, Abstract number 76547, 92 (1365) (1989) (6481).]Search in Google Scholar
[[33] V. Kundu, R.L. Dhiman, A.S. Maan, D.R. Goyal, S. Arora, J. Optoelectr. Adv. Mater, 12 (12) (2010) 2373-2379.]Search in Google Scholar
[[34] Rajesh Barde, Sandeep Waghuley, J. Chin. Adv. Mater. Soc., 2 (2014) 273-283.10.1080/22243682.2014.951879]Search in Google Scholar
[[35] H. El Mkami, B. Deroide, R. Backov, J.V. Zanchetta, J. Phys. Chem. Solids., 61 (2000) 819-826.10.1016/S0022-3697(99)00306-6]Search in Google Scholar
[[36] M.K. El-Mansy, J. Mater. Chem. Phys., 56 (1998) 236.]Search in Google Scholar
[[37] M.S. Al-Assiri, S.A. Salem, M.M. El-Desoky, J. Phys. Chem. Solids, 67 (2006) 1873-1881.]Search in Google Scholar
[[38] H.H. Qui. T. Ito, H. Sakata, Mater. Chem. Phys., 58 (1999) 1004.]Search in Google Scholar
[[39] T. Suzuki, M. Hirano, H. Hosono, J. Appl.Phys., 91 (2002) 4149.10.1063/1.1456946]Search in Google Scholar
[[40] M.M. El-Desoky, I. Kashif, Phys.Stat. Sol., 194 (2002) 89.]Search in Google Scholar
[[41] M.J. Gang, Y.J. Kim. S.J. Moon. S.J. Chung, D.J. Cha, New Phys., 28 (1988) 605 (in Korean, cited in PA, Abstract number 76547, 92 (1365) (1989) (6481).]Search in Google Scholar
[[42] M.M. EI-Desoky, J. Non-Cryst. Solids, 351 (37-39) (2005) 3139-3146.10.1016/j.jnoncrysol.2005.08.004]Search in Google Scholar
[[43] H. Hosono, K. Nomura, Y. Ogo, T. Uruga, T. Kamiya, J. Non-Cryst. Solids., 354 (19-25) (2008) 2796.10.1016/j.jnoncrysol.2007.10.071]Search in Google Scholar
[[44] M.S. Al-Assiri, S.A. Salem, M.M. El-Desoky, J. Phys. Chem. Solids, 67 (2006) 1873-1881]Search in Google Scholar
[[45] N.F. Mott. E.A. Davis, Electronic processes in Non-Crystalline Materials, Clarendon, Oxford, 1979.M.M. El-Desoky, J. Non-Cryst. Solids 351 (2005) 3139.]Search in Google Scholar
[[46] M.M. El-Desoky, N.M. Tashtoush, M.H. Habib, J. Mater. Sci.: Mater. Electronics., 16 (2005) 533-539.10.1007/s10854-005-2729-y]Search in Google Scholar
[[47] D. Emin, T. Holstein, Ann. Phys., 53 (1969) 439-520.]Search in Google Scholar
[[48] M. M. El-Desoky, N. M. Tashtoush, M. H. Habib, J. Mater. Sci- Mater. Electron., 16 (2005) 533-539.]Search in Google Scholar
[[49] K. Sega, Y. Kuroda, H. Sakata, J. Mater. Sci., 33 (1998) 138.]Search in Google Scholar
[[50] D. Emin, T. Holstein, Ann. Phys., 53 (1969) 439-520.]Search in Google Scholar
[[51] N.F. Mott, E.A. Davis, Electronic processes in Non-Crystalline Materials, Clarendon, Oxford, 1979.]Search in Google Scholar