Structural role of chromium sulfate in modified borate glasses and glass ceramics

Materialia ◽  
2021 ◽  
pp. 101095
Author(s):  
G. El-Damrawi ◽  
A.M. Abdelghany ◽  
M.I. Abdelghany ◽  
M.A. Madshal
Keyword(s):  
Glass Ceramics ◽  
Borate Glasses ◽  
Structural Role ◽  
Chromium Sulfate

Structural role of Zr4+ as a nucleating agent in a MgO–Al2O3–SiO2 glass-ceramics: A combined XAS and HRTEM approach

2010 ◽  
Vol 356 (52-54) ◽  
pp. 2928-2934 ◽  
Author(s):  
Olivier Dargaud ◽  
Laurent Cormier ◽  
Nicolas Menguy ◽  
Laurence Galoisy ◽  
Georges Calas ◽  
...  
Keyword(s):  
Glass Ceramics ◽  
Nucleating Agent ◽  
Sio2 Glass ◽  
Structural Role

The structural role of manganese ions in some zinc phosphate glasses and glass ceramics

2010 ◽  
Vol 504 (2) ◽  
pp. 479-483 ◽  
Author(s):  
Petru Pascuta ◽  
Gheorghe Borodi ◽  
Nicolaie Jumate ◽  
Ioan Vida-Simiti ◽  
Dan Viorel ◽  
...  
Keyword(s):  
Zinc Phosphate ◽  
Glass Ceramics ◽  
Phosphate Glasses ◽  
Manganese Ions ◽  
Structural Role

Structural role of RO and Al2O3 in borate glasses using an ultrasonic technique

2006 ◽  
Vol 54 (14) ◽  
pp. 3811-3819 ◽  
Author(s):  
A. Abd El-Moneim ◽  
I.M. Youssof ◽  
L. Abd El-Latif
Keyword(s):  
Borate Glasses ◽  
Ultrasonic Technique ◽  
Structural Role

ChemInform Abstract: MOESSBAUER STUDIES OF THE STRUCTURAL ROLE OF TIN IN BORATE GLASSES

1982 ◽  
Vol 13 (46) ◽  
Author(s):  
A. LECHTENBOEHMER ◽  
B. D. MOSEL ◽  
W. MUELLER-WARMUTH ◽  
H. DUTZ
Keyword(s):  
Borate Glasses ◽  
Structural Role

scholarly journals Structural Role of CeO<sub>2</sub> in the Modified Borate Glass-Ceramics

2021 ◽  
Vol 11 (01) ◽  
pp. 34-43
Author(s):  
Nada ElBaz ◽  
Gomaa El-Damrawi ◽  
Amr M. Abdelghany
Keyword(s):  
Borate Glass ◽  
Glass Ceramics ◽  
Structural Role

Magnetic Properties of xCeO2•(50 − x) PbO•50B2O3 Glasses and Glass Ceramics

2017 ◽  
Vol 13 (1) ◽  
pp. 4486-4494 ◽  
Author(s):  
G.El Damrawi ◽  
F. Gharghar
Keyword(s):  
Magnetic Properties ◽  
Large Scale ◽  
Glass Ceramics ◽  
Magnetic Behavior ◽  
Crystal Formation ◽  
Dual Roles ◽  
Effective Agent ◽  
Ordered Structures ◽  
Essential Change

Cerium oxide in borate glasses of composition xCeO2·(50 − x)PbO·50B2O3 plays an important role in changing both microstructure and magnetic behaviors of the system. The structural role of CeO2 as an effective agent for cluster and crystal formation in borate network is clearly evidenced by XRD technique. Both structure and size of well-formed cerium separated clusters have an effective influence on the structural properties. The cluster aggregations are documented to be found in different range ordered structures, intermediate and long range orders are the most structures in which cerium phases are involved. The nano-sized crystallized cerium species in lead borate phase are evidenced to have magnetic behavior.  The criteria of building new specific borate phase enriched with cerium as ferrimagnetism has been found to keep the magnetization in large scale even at extremely high temperature. Treating the glass thermally or exposing it to an effective dose of ionized radiation is evidenced to have an essential change in magnetic properties. Thermal heat treatment for some of investigated materials is observed to play dual roles in the glass matrix. It can not only enhance alignment processes of the magnetic moment but also increases the capacity of the crystallite species in the magnetic phases. On the other hand, reverse processes are remarked under the effect of irradiation. The magnetization was found to be lowered, since several types of the trap centers which are regarded as defective states can be produced by effect of ionized radiation. 

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