Anderson A, Hunderi O and Granqvist C G 1980J. Appl. Phys 57 757
Joshi G P, Mangal R, Saxena N S and Sharma T P 2002Indian J. Pure & Appl. Phys. 40 297
Komaneni S 1992J. Mater. Chem. 2 12
Kumar V, Sharma S K, Sharma T P and Singh V 1999Opt. Mater. 12 115
Mathur R, Sharma D R, Vadera S R and Kumar N 1999Bull. Mater. Sci. 22 991
Mathur R, Parihar M, Vadera S R and Kumar N 1998J. Magn. Soc. Jap. 22 273
Singh V, Singh B P, Kumar V, Sharma T P and Tyagi R C 2000Indian J. Eng. & Mater. Sci. 7 100
Sirohi S and Sharma T P 1999Opt. Mater. 13 267
Suri K, Annapoorni S and Tandon R P 2001Bull. Mater. Sci 24 563
Tauc J 1974Amorphous and liquid semiconductor (New York: Plenum) p. 159
Vadera S R, Mathue R, Parihar M and Kumar N 1997Nano-Structured Mater. 8 889
