Tellurite And Fluorotellurite Glasses For Active And Passive
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Tellurite And Fluorotellurite Glasses For Active And Passive

Tellurite And Fluorotellurite Glasses For Active And Passive Tellurite And Fluorotellurite Glasses For Active And Passive

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4. Thermal properties and glass stability; MDO 133 P2O5) glasses doped with chromium ions," Journal of Luminescence, vol. 99, pp. 53-60, 2002. [48] G. El-Damrawi, "Transport behavior of PbO-PbF2-TeO2 glasses," Physica Status Solidi a-Applied Research, vol. 177, pp. 385-392, 2000. [49] K. Kobayasbhi, "Development of infrared transmitting glasses," Journal of Non- Crystalline Solids, vol. 316, pp. 403-406, 2003. [50] K. Kobayashi and H. Sasaki, "Visible rays cutoff and infrared transmission properties of TeO2-GeO2-V2O5-PbF2 glass systems," Journal of the European Ceramic Society, vol. 19, pp. 637-639, 1999. [51] M. A. P. Silva, Y. Messaddeq, V. Briois, M. Poulain, F. Villain, and S. J. L. Ribeiro, "Synthesis and structural investigations on TeO2-PbF2-CdF2 glasses and transparent glass-ceramics," Journal of Physics and Chemistry of Solids, vol. 63, pp. 605-612, 2002. [52] H. Burger, W. Vogel, and V. Kozhukharov, "IR transmission and properties of glasses in the TeO2- RnOm,RnXm,Rn(SO4)m,Rn(PO3)m and B2O3 systems," Infrared Physics, vol. 25, pp. 395-409, 1985. [53] J. E. Huheey, Inorganic chemistry: principles of structure and reactivity, S.I. Units ed. London: Harper & Row, 1975. [54] N. N. Greenwood and A. Earnshaw, Chemistry of the elements. Oxford: Butterworth-Heinemann, 1995. [55] K. J. Rao, Structural chemistry of glasses. London: Elsevier, 2002. [56] A. Jha, S. Shen, and M. Naftaly, "Structural origin of spectral broadening of 1.5 micron emission in Er 3+ -doped tellurite glasses," Physical Review B, vol. 62, pp. 6215-6227, 2000. [57] K. Hirano, Y. Benino, and T. Komatsu, "Rare earth doping into optical nonlinear nanocrystalline phase in transparent TeO2-based glass-ceramics," Journal of Physics and Chemistry of Solids, vol. 62, pp. 2075-2082, 2001.

5. Crystallisation studies; MDO 134 5. Crystallisation studies The aims of this chapter are: to use X-ray diffraction (XRD) to assist the monitoring and optimisation of the purification procedures for glass batch precursors; to use knowledge of the crystal structures of precursors materials to gain further insight into the structure of tellurite and fluorotellurite glasses; and to use XRD to investigate the nature of crystalline phases formed in devitrification of glasses during processing and characterisation. 5.1. Experimental 5.1.1. X-ray diffraction (XRD) 5.1.1.1. Method and instrumentation X-ray diffraction (XRD) was performed in this study using a Siemens D500 powder diffractometer. All traces were recorded using CuKα radiation at 1.5418 Å, scanning from 10 to 100° 2θ with a step size of 0.02° 2θ every 1 s (i.e. each trace took 75 min. to run), at ambient temperature, in air. Samples were ground to a fine powder using a pestle and mortar, and mounted in a Perspex / aluminium sample holder by compacting the powder into a circular disc (1 to 2 mm thick) with a glass slide. Fig. (5.1) illustrates this holder.

4. Thermal properties and glass stability; MDO 133<br />

P2O5) glasses doped with chromium ions," Journal of Luminescence, vol. 99, pp.<br />

53-60, 2002.<br />

[48] G. El-Damrawi, "Transport behavior of PbO-PbF2-TeO2 glasses," Physica Status<br />

Solidi a-Applied Research, vol. 177, pp. 385-392, 2000.<br />

[49] K. Kobayasbhi, "Development of infrared transmitting glasses," Journal of Non-<br />

Crystalline Solids, vol. 316, pp. 403-406, 2003.<br />

[50] K. Kobayashi and H. Sasaki, "Visible rays cutoff and infrared transmission<br />

properties of TeO2-GeO2-V2O5-PbF2 glass systems," Journal of the European<br />

Ceramic Society, vol. 19, pp. 637-639, 1999.<br />

[51] M. A. P. Silva, Y. Messaddeq, V. Briois, M. Poulain, F. Villain, and S. J. L.<br />

Ribeiro, "Synthesis and structural investigations on TeO2-PbF2-CdF2 glasses and<br />

transparent glass-ceramics," Journal of Physics and Chemistry of Solids, vol. 63,<br />

pp. 605-612, 2002.<br />

[52] H. Burger, W. Vogel, and V. Kozhukharov, "IR transmission and properties of<br />

glasses in the TeO2- RnOm,RnXm,Rn(SO4)m,Rn(PO3)m and B2O3 systems," Infrared<br />

Physics, vol. 25, pp. 395-409, 1985.<br />

[53] J. E. Huheey, Inorganic chemistry: principles of structure and reactivity, S.I.<br />

Units ed. London: Harper & Row, 1975.<br />

[54] N. N. Greenwood and A. Earnshaw, Chemistry of the elements. Oxford:<br />

Butterworth-Heinemann, 1995.<br />

[55] K. J. Rao, Structural chemistry of glasses. London: Elsevier, 2002.<br />

[56] A. Jha, S. Shen, and M. Naftaly, "Structural origin of spectral broadening of 1.5<br />

micron emission in Er 3+ -doped tellurite glasses," Physical Review B, vol. 62, pp.<br />

6215-6227, 2000.<br />

[57] K. Hirano, Y. Benino, and T. Komatsu, "Rare earth doping into optical nonlinear<br />

nanocrystalline phase in transparent TeO2-based glass-ceramics," Journal of<br />

Physics and Chemistry of Solids, vol. 62, pp. 2075-2082, 2001.

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