Embedded cluster models for electronic states of silicate glasses

2000 ◽  
pp. 271-290 ◽  
Author(s):  
Y. Kowada ◽  
D.E. Ellis
Keyword(s):  
Electronic States ◽  
Silicate Glasses ◽  
Cluster Models

Electronic states of modifier ions in silicate glasses

1994 ◽  
Vol 177 ◽  
pp. 286-292 ◽  
Author(s):  
Y. Kowada ◽  
H. Adachi ◽  
M. Tatsumisago ◽  
T. Minami
Keyword(s):  
Electronic States ◽  
Silicate Glasses

Electronic states of transition metal ions in silicate glasses

1995 ◽  
Vol 192-193 ◽  
pp. 316-320 ◽  
Author(s):  
Yoshiyuki Kowada ◽  
Hirohiko Adachi ◽  
Masahiro Tatsumisago ◽  
Tsutomu Minami
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Electronic States ◽  
Transition Metal Ions ◽  
Silicate Glasses

Electronic states spectrum for lead silicate glasses with different short-range order structures

1991 ◽  
Vol 127 (3) ◽  
pp. 259-266 ◽  
Author(s):  
V.A. Gubanov ◽  
A.F. Zatsepin ◽  
V.S. Kortov ◽  
D.L. Novikov ◽  
S.P. Friedman ◽  
...  
Keyword(s):  
Short Range ◽  
Short Range Order ◽  
Electronic States ◽  
Range Order ◽  
Silicate Glasses ◽  
Lead Silicate ◽  
Order Structures

Vibrational structure of electronic states in alkali-silicate glasses

2004 ◽  
Vol 1 (11) ◽  
pp. 2912-2915 ◽  
Author(s):  
D. A. Zatsepin ◽  
A. F. Zatsepin ◽  
V. I. Solomonov ◽  
S.O. Cholakh
Keyword(s):  
Electronic States ◽  
Vibrational Structure ◽  
Silicate Glasses ◽  
Alkali Silicate

Direct observations of radiation-enhanced transformations in glass

1983 ◽  
Vol 41 ◽  
pp. 354-355
Author(s):  
J. F. DeNatale ◽  
D. G. Howitt
Keyword(s):  
Glass Matrix ◽  
Diffusion Mechanism ◽  
Bubble Formation ◽  
Silicate Glasses ◽  
Phase Decomposition ◽  
Direct Observations ◽  
Thin Foils ◽  
Oxygen Bubble ◽  
Electron Energy Loss ◽  
Kinetics Of

The electron irradiation of silicate glasses containing metal cations produces various types of phase separation and decomposition which includes oxygen bubble formation at intermediate temperatures figure I. The kinetics of bubble formation are too rapid to be accounted for by oxygen diffusion but the behavior is consistent with a cation diffusion mechanism if the amount of oxygen in the bubble is not significantly different from that in the same volume of silicate glass. The formation of oxygen bubbles is often accompanied by precipitation of crystalline phases and/or amorphous phase decomposition in the regions between the bubbles and the detection of differences in oxygen concentration between the bubble and matrix by electron energy loss spectroscopy cannot be discerned (figure 2) even when the bubble occupies the majority of the foil depth.The oxygen bubbles are stable, even in the thin foils, months after irradiation and if van der Waals behavior of the interior gas is assumed an oxygen pressure of about 4000 atmospheres must be sustained for a 100 bubble if the surface tension with the glass matrix is to balance against it at intermediate temperatures.

Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

1996 ◽  
Vol 54 ◽  
pp. 154-155
Author(s):  
E. G. Rightor
Keyword(s):  
Excited State ◽  
Polymer Blends ◽  
Gas Phase ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Electronic States ◽  
Core Electron ◽  
Bulk Solids ◽  
Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

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