scholarly journals Optical Properties of the Perovskite Solid Solution LaTiO2N—ATiO3 (A: Sr, Ba).

ChemInform ◽  
2006 ◽  
Vol 37 (23) ◽  
Author(s):  
Francois Chevire ◽  
Franck Tessier ◽  
Roger Marchand
Keyword(s):  
Solid Solution ◽  
Optical Properties

Continuous-Flow Syntheses of Alloy Nanoparticles

2021 ◽  
Author(s):  
Kohei Kusada ◽  
Hiroshi Kitagawa
Keyword(s):  
Solid Solution ◽  
Optical Properties ◽  
Continuous Flow ◽  
Core Shell ◽  
Alloy Nanoparticles ◽  
Wide Range

Alloy nanoparticles (NPs), including core-shell, segregated and solid-solution types, show a variety of attractive properties such as catalytic and optical properties and are used in a wide range of applications....

scholarly journals Preparation of ZnxCd1-xS solid-solution films and their optical properties.

Shinku ◽  
1985 ◽  
Vol 28 (2) ◽  
pp. 82-86
Author(s):  
Goro SHIMAOKA ◽  
Yoshiko SUZUKI
Keyword(s):  
Solid Solution ◽  
Optical Properties

Coupling between magnetic and optical properties of stable Au–Fe solid solution nanoparticles

2010 ◽  
Vol 21 (16) ◽  
pp. 165701 ◽  
Author(s):  
C de Julián Fernández ◽  
G Mattei ◽  
E Paz ◽  
R L Novak ◽  
L Cavigli ◽  
...  
Keyword(s):  
Solid Solution ◽  
Optical Properties

Structural and optical properties of Ba3(Nb6−xTax)Si4O26 (x = 0.6, 1.8, 3.0, 4.2, 5.4)

2019 ◽  
Vol 34 (4) ◽  
pp. 331-338
Author(s):  
W. Wong-Ng ◽  
G. Y. Liu ◽  
W. F. Liu ◽  
Y. Q. Yang ◽  
S. Y. Wang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Optical Properties ◽  
Density Functional ◽  
Salient Feature ◽  
Lattice Parameter ◽  
Structural And Optical Properties ◽  
Functional Theory ◽  
Coordination Environment ◽  
Distorted Octahedra ◽  
Bond Valence Sum

Structure and optical properties have been successfully determined for a series of niobium- and tantalum-containing layered alkaline-earth silicate compounds, Ba3(Nb6−xTax)Si4O26 (x = 0.6, 1.8, 3.0, 4.2, 5.4). The structure of this solid solution was found to be hexagonal P-62m (No. 189), with Z = 1. With x increases from 0.6 to 5.4, the lattice parameter a increases from 8.98804(8) to 9.00565(9) Å and c decreases from 7.83721(10) to 7.75212(12) Å. As a result, the volume decreases from 548.304(11) to 544.479(14) Å3. The (Nb/Ta)O6 distorted octahedra form continuous chains along the c-axis. These (Nb/Ta)O6 chains are in turn linked with the Si2O7 groups to form distorted pentagonal channels in which Ba ions were found. These Ba2+ ions have full occupancy and a 13-fold coordination environment with neighboring oxygen sites. Another salient feature of the structure is the linear Si–O–Si chains. When x in Ba3(Nb6−xTax)Si4O26 increases, the bond valence sum (BVS) values of the Ba sites increase slightly (2.09–2.20), indicating the size of the cage becoming progressively smaller (over-bonding). While SiO cages are also slightly smaller than ideal (BVS range from 4.16 to 4.19), the (Nb/Ta)O6 octahedral cages are slightly larger than ideal (BVS range from 4.87 to 4.90), giving rise to an under-bonding situation. The bandgaps of the solid solution members were measured between 3.39 and 3.59 eV, and the x = 3.0 member was modeled by density functional theory techniques to be 3.07 eV. The bandgaps of these materials indicate that they are potential candidates for ultraviolet photocatalyst.

scholarly journals Structural, morphology and optical properties of Zn(1-x)CdxO solid solution grown on c-plane sapphire substrate

2012 ◽  
Vol 29 ◽  
pp. 00019
Author(s):  
A. Fouzri ◽  
M. A. Boukadhaba ◽  
M. Oumezzine ◽  
A. Bchetnia ◽  
V. Sallet
Keyword(s):  
Solid Solution ◽  
Optical Properties ◽  
Sapphire Substrate ◽  
Structural Morphology

scholarly journals Czochralski Growth and Optical Properties οf (Lu_{x}Gd_{1-x})_2SiO_5 Solid Solution Crystals Single Doped with Sm^{3+} and~Dy^{3+}

2013 ◽  
Vol 124 (2) ◽  
pp. 321-328 ◽  
Author(s):  
W. Ryba-Romanowski ◽  
A. Strzęp ◽  
M. Głowacki ◽  
R. Lisiecki ◽  
P. Solarz ◽  
...  
Keyword(s):  
Solid Solution ◽  
Optical Properties ◽  
Czochralski Growth

scholarly journals A variety of thorianite from Galle, Ceylon

1906 ◽  
Vol 77 (520) ◽  
pp. 546-549 ◽  
Keyword(s):  
Solid Solution ◽  
Optical Properties ◽  
Crystalline Form ◽  
New Mineral ◽  
Thorium Dioxide ◽  
Cubic Crystal ◽  
Brownish Yellow ◽  
Yellow Substance ◽  
Intimate Association ◽  
General Physical

In a previous paper an account has been given of the composition and properties of a new mineral from Ceylon, chiefly composed of thorium dioxide (78 to 79 per cent.), to which the name thorianite was given. The mineral was shown to contain, besides thoria, a certain proportion of oxides of uranium varying in the three specimens analysed between 11 and 15 per cent., the uranium being present partly as dioxide and partly as trioxide, that is to say, in the same condition as in uraninite or pitchblende. It was shown that the evidence strongly supports the conclusion that thorianite and uraninite possess the same crystalline form and that they are isomorphous minerals. It is interesting to note that the new mineral naëgite, from Japan, which is essentially a silicate of uranium containing thorium, appears to be isomorphous with thorite (thorium silicate). It was suggested that the intimate association of thoria with oxides of uranium in thorianite is to he regarded as a case of isomorphous mixture. Such a mixture, or perhaps “solid solution,” might result from the crystallisation of thorianite from a fused mixture or magma containing the oxides of both elements. We have now obtained important confirmation of this view through the analyses of some unusually large crystalline fragments of thorianite received from the Galle District of Ceylon, which show that a still wider variation may occur in the proportions of the two oxides present in the mineral. This variety is composed of black lumps, usually of indefinite crystalline form, some of the pieces being apparently cubic. They are often partially covered with a brownish yellow substance containing a considerable amount of silica and probably derived from the associated rock. Some of the pieces weighed over 50 grammes, and were evidently portions of much larger masses. The fractured surfaces often showed a slightly less lustrous and more pitchy appearance than ordinary thorianite. The appearance of the mineral is thus intermediate between the small separate and cubical crystals of thorianite and the large masses without definite crystalline form, which are usually characteristic of uraninite. A small amount of material from Hinidumpattu in Galle consisted of small cubic crystal almost indistinguishable in appearance from ordinary thorianite. In hardness, optical properties, density and general physical characters this variety of thorianite closely resembles the ordinary form of the mineral.

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