Phase-structure transformations of glass-ceramics under laser heating as a way to create new micro-optical components and materials

2004 ◽  
Author(s):  
Vadim P. Veiko ◽  
Q. K. Kieu
Keyword(s):  
Phase Structure ◽  
Laser Heating ◽  
Glass Ceramics ◽  
Optical Components

Phase structure control and optical spectroscopy of rare-earth activated GdF3 nanocrystal embedded glass ceramics via alkaline-earth/alkali-metal doping

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71176-71187 ◽  
Author(s):  
Shen Liu ◽  
Daqin Chen ◽  
Zhongyi Wan ◽  
Yang Zhou ◽  
Ping Huang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Alkali Metal ◽  
Optical Spectroscopy ◽  
Phase Structure ◽  
Alkaline Earth ◽  
Glass Ceramics ◽  
Glass Crystallization ◽  
Metal Doping ◽  
Structure Control

Alkaline-earth/alkali-metal dopant-induced hexagonal and orthorhombic GdF3 nanocrystal embedded glass ceramics were fabricated via glass crystallization.

The Crystallisation of B-Phase Glass-Ceramics

2006 ◽  
Vol 45 ◽  
pp. 30-35 ◽  
Author(s):  
L.K.L. Falk ◽  
Yvonne Menke ◽  
Stuart Hampshire
Keyword(s):  
Heat Treatment ◽  
Phase Structure ◽  
Composition Range ◽  
Glass Ceramics ◽  
Two Dimensional ◽  
Dimensional Network ◽  
Solid Solution Range ◽  
Cation Radius ◽  
Phase Glass ◽  
Random Substitution

Five-component B-phase may be readily formed through the nucleation and crystallisation heat treatment of nitrogen-rich parent glasses with composition (e/o) 35R:45Si:20Al:83O:17N. This paper is focussed on the B-phase structure where R stands for ytterbium, erbium or yttrium. Fine probe EDX analysis in the TEM has shown that the lenticular B-phase crystals take up a substantial range of composition and that the element R is always clearly anti-correlated with silicon. A larger R3+ cation radius moves the B-phase composition range to lower R contents, and as a consequence of the anti-correlation with silicon, the silicon solid solution range goes to higher values. The EDX results lend support to a B-phase structure consisting of two-dimensional network of randomly linked (Si,Al)(O,N)4 tetrahedra between layers of R3+ cations. It is suggested that, in addition to the random substitution of silicon by aluminium in the (Si,Al)(O,N)4 tetrahedra, a locally increased density in the bi-dimensional network of randomly oriented tetrahedra is associated with an increased density of vacancies in the R3+ cation lattice.

scholarly journals High performance transparent glass-ceramics for optical components

2015 ◽  
Vol 123 (1442) ◽  
pp. 949-954 ◽  
Author(s):  
Kei MAEDA ◽  
Motoyuki HIROSE ◽  
Tomoyuki KOBAYASHI
Keyword(s):  
High Performance ◽  
Glass Ceramics ◽  
Optical Components ◽  
Transparent Glass

Phase-structure transitions of glass-ceramics under IR-laser action: main peculiarities

2006 ◽  
Author(s):  
V. P. Veiko ◽  
B. Yu. Novikov ◽  
P. A. Skiba ◽  
E. B. Yakovlev
Keyword(s):  
Phase Structure ◽  
Laser Action ◽  
Glass Ceramics ◽  
Ir Laser

Preparation of Thin Cadmium Telluride Samples for Electron Microscope Studies

1974 ◽  
Vol 32 ◽  
pp. 548-549
Author(s):  
T. J. Magee ◽  
J. Peng ◽  
J. Bean
Keyword(s):  
Electron Microscope ◽  
Sulfuric Acid ◽  
Solid State ◽  
Sample Preparation ◽  
Cadmium Telluride ◽  
Potassium Dichromate ◽  
Optical Components ◽  
The Past ◽  
Solid State Devices

Cadmium telluride has become increasingly important in a number of technological applications, particularly in the area of laser-optical components and solid state devices, Microstructural characterizations of the material have in the past been somewhat limited because of the lack of suitable sample preparation and thinning techniques. Utilizing a modified jet thinning apparatus and a potassium dichromate-sulfuric acid thinning solution, a procedure has now been developed for obtaining thin contamination-free samples for TEM examination.

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