title: Thermo-optic characterization of neodymium/nickel doped silica glasses prepared via sol-gel route.
abstract: Intrinsic as well as rare earth (Neodymium) doped silica glasses with various molar ratio of dopant and a metallic (Nickel) co-dopant is prepared via sol-gel route. The structural characterization of the sample is carried out using X-ray diffraction and Fourier Transform Infrared Spectroscopy. The influence of dopant and doping concentration on the optical properties of silica matrix is investigated via UV-VIS absorption spectroscopy. Effect of dopant on thermal effusivity value of the host matrix is carried out by laser induced open cell photoacoustic technique. Analysis of the results showed that doping affect the thermal effusivity value and results are interpreted in terms of structural modification of the lattice and phonon assisted heat transport mechanism.
authors.affiliation: Research Centre, Department of Physics, Maharajas College, Ernakulam 682 011, India.
authors.forename: Ancy
authors.initials: A
authors.lastname: Manuel
authors.forename: B Rajesh
authors.initials: BR
authors.lastname: Kumar
authors.forename: N Shemeena
authors.initials: NS
authors.lastname: Basheer
authors.forename: B Syamala
authors.initials: BS
authors.lastname: Kumari
authors.forename: P I
authors.initials: PI
authors.lastname: Paulose
authors.forename: Achamma
authors.initials: A
authors.lastname: Kurian
authors.forename: Sajan D
authors.initials: SD
authors.lastname: George
mesh_terms: D004867:Equipment Design; D005898:Glass / Q000737:chemistry*; D009354:Neodymium / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D044367:Phase Transition; D061088:Photoacoustic Techniques / Q000295:instrumentation; D012822:Silicon Dioxide / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D009354:Neodymium; D012822:Silicon Dioxide; D009532:Nickel