ChemInform Abstract: Structure of Sodium Tellurite Glasses: Sodium Cation Environments from Sodium-23 NMR.

ChemInform ◽  
2010 ◽  
Vol 26 (31) ◽  
pp. no-no
Author(s):  
S. L. TAGG ◽  
R. E. YOUNGMAN ◽  
J. W. ZWANZIGER
Keyword(s):  
Sodium Cation ◽  
Tellurite Glasses ◽  
Sodium Tellurite ◽  
Abstract Structure

The Structure of Sodium Tellurite Glasses: Sodium Cation Environments from Sodium-23 NMR

1995 ◽  
Vol 99 (14) ◽  
pp. 5111-5116 ◽  
Author(s):  
S. L. Tagg ◽  
R. E. Youngman ◽  
J. W. Zwanziger
Keyword(s):  
Sodium Cation ◽  
Tellurite Glasses ◽  
Sodium Tellurite

Vibrational modes of sodium–tellurite glasses: Local structure and Boson peak changes

2007 ◽  
Vol 68 (5-6) ◽  
pp. 1035-1039 ◽  
Author(s):  
A.G. Kalampounias ◽  
S.N. Yannopoulos ◽  
G.N. Papatheodorou
Keyword(s):  
Local Structure ◽  
Boson Peak ◽  
Tellurite Glasses ◽  
Vibrational Modes ◽  
Sodium Tellurite

Intermediate Range Order in Sodium Tellurite Glasses

1996 ◽  
Vol 455 ◽  
Author(s):  
J. W. Zwanziger ◽  
J. C. McLaughlin ◽  
S. L. Tagg
Keyword(s):  
Random Model ◽  
Range Order ◽  
Sodium Oxide ◽  
Oxide Content ◽  
Tellurite Glasses ◽  
Sodium Ions ◽  
Distance Distributions ◽  
Sodium Tellurite ◽  
Maximum Stability ◽  
Spin Echoes

ABSTRACTInformation about the spatial distribution of sodium cations in sodium tellurite glasses is obtained from the decay rate of sodium spin echoes. The spin echoes decay due to the magnetic dipole coupling between sodium nuclei, with each pair contributing to the rate in proportion to 1/r6, where r is the distance between the pair. The experiment is used to probe the sodium distributions in sodium tellurite glasses as a function of sodium oxide content, and the resulting distance distributions are interpreted by comparison with model distributions. At low sodium contents the distribution is similar to that of a random model in which the sodium ions are constrained to be no closer than a minimum cut-off distance. At higher contents the distributions deviate significantly from the random model, suggesting the onset of medium range order in the distribution of sodium ions. This order is most pronounced at 20% sodium oxide content, the composition at which this glass has been claimed to have maximum stability against devitrification.

scholarly journals Thermal stability and Judd-Ofelt analysis of optical properties of Sm3+-doped sodium tellurite glasses

2017 ◽  
Author(s):  
Saman Q. Mawlud ◽  
Mudhafar M. Ameena ◽  
Md. Rahim Sahar ◽  
Zahra A. Said Mahraz ◽  
Kasim Fawzy Ahmed
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Tellurite Glasses ◽  
Sodium Tellurite

Second-Harmonic Generation in Thermally Poled Na2O-Al2O3-TeO2 Glasses

2008 ◽  
Vol 39-40 ◽  
pp. 247-252 ◽  
Author(s):  
Sakiko Ukon ◽  
Yasuhito Tsujiie ◽  
Shunsuke Murai ◽  
Koji Fujita ◽  
Katsuhisa Tanaka
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Visible Region ◽  
High Refractive Index ◽  
Nonlinear Susceptibility ◽  
Tellurite Glasses ◽  
Oxide Glasses ◽  
Sodium Tellurite ◽  
Thermally Poled

Tellurite glasses exhibit attractive optical properties such as high refractive index, high transmittance in the infrared-to-visible region, and large third-order nonlinear susceptibility. Poled tellurite glasses also show second-harmonic generation (SHG) as revealed by the present authors. However, there exist many unresolved problems in second-harmonic generation of oxide glasses; SH intensity is low and it decays at room temperature. In this work, the effect of Al2O3 addition on SH intensity and its decay has been explored for thermally poled sodium tellurite glasses. The decay rate of SH intensity is reduced by the addition of Al2O3. The result is similar to those reported for phosphate and silicate glasses containing Al2O3. Also, the glasses poled at a voltage of 4 kV manifest optimum poling temperature lower than that for the same glasses poled at 3 kV.

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