Solid State Science and Technology, Vol. 14, No 1 (2006) 115-120

ISSN 0128-7389

115

OPTICAL BAND GAP AND IR SPECTRA OF GLASSES IN THE SYSTEM [Nd2O3](x)-[CuO](35-x)-[P2O5](65)

Md. Rahim Sahar,and Agus Setyo Budi,

Jabatan Fizik, Fakulti Sains,

Universiti Teknologi Malaysia,

81310 Skudai, Johor DT

 

ABSTRACT

 

The infrared and ultraviolet-visible spectroscopiy of neodymium copper phosphate glasses on the [Nd2O3](x)-[CuO](35-x)-[P2O5](65) system with 0≤ x ≤10 mol % has been studied. The study shows existence of phosphate tetrahedral dominates in lattice vibrations. It is also found out that The Urbach energy lie between 0.451 and 0.634 eV, and the optical energy gaps between 0.79 eV to 2.34 0.01eV.

 

http://journal.masshp.net/wp-content/uploads/Journal/2006/Rahim%20Sahar%20115-120.pdf

 

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