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M. A. Noginov, N. E. Noginova, H. J. Caulfield, P. Venkateswarl and M. Mahdi, “Line Narrowing in the Dye Solution with Scattering Centers,” Optics Communications, Vol. 118, No. 3-4, 1995, pp. 430-437. doi:10.1016/0030-4018(95)00177-A

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• TITLE: Prepared of Nd: TiO2 Nano Particles Powder as IR Filter via Sol-Gel

  AUTHORS: Mohammed A. Hamza, Fawaz N. Saiof, Adnan S. Al-ithawi, Majda A. Ameen, Hanna M. Yaseen

  KEYWORDS: Sol-Gel; Nano Technology; TiO2 ; MID IR Optical Filter

  JOURNAL NAME: Advances in Materials Physics and Chemistry, Vol.3 No.2, June 19, 2013

  ABSTRACT: Doped and undoped nanostructured titanium dioxides were prepared via Sol-Gel method under varying conditions to investigate the effects of neodymium ion doping on the titania optical properties in MID IR range. X-ray diffraction analyses show that the amorphous structure of the prepared samples turns to anatas polycrystalline structure after annealing process at 500°C. FTIR spectrums for pure and doped samples after annealing show a single transmission peak at wave number around 1200 cm-1. The transmission rate of the peak depends on Nd3+ concentrations and its value rises from 1.82% (for pure TiO2) to 86.9% (for doped with 12%wt Nd3+). Shifting on the peak occurs with a maximal shift at 7%wt Nd3+ and then becomes stable at higher concentration. FTIR spectra give a good indication in the direction of preparation of optical band-pass filter at a wavelength around 8.34 μm (~1200 cm-1).