Thermal Expansion Effects in Electrical Transport in Amorphous Metals

1985 ◽  
Author(s):  
L. V. Meisel ◽  
P. J. Cote
Keyword(s):  
Thermal Expansion ◽  
Electrical Transport ◽  
Amorphous Metals

Erratum: Electrical transport in low-resistivity amorphous metals

1983 ◽  
Vol 28 (12) ◽  
pp. 7353-7353
Author(s):  
L. V. Meisel ◽  
P. J. Cote
Keyword(s):  
Electrical Transport ◽  
Amorphous Metals ◽  
Low Resistivity

Electrical transport in low-resistivity amorphous metals

1983 ◽  
Vol 27 (8) ◽  
pp. 4617-4627 ◽  
Author(s):  
L. V. Meisel ◽  
P. J. Cote
Keyword(s):  
Electrical Transport ◽  
Amorphous Metals ◽  
Low Resistivity

scholarly journals Crystal structure, thermal and electrotransport properties of NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) solid solutions

2021 ◽  
Vol 8 (3) ◽  
pp. 20218301
Author(s):  
A. I. Klyndyuk ◽  
Ya. Yu. Zhuravleva ◽  
N. N. Gundilovich
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Electrical Conductivity ◽  
Thermal Expansion ◽  
Solid Solutions ◽  
Electrical Transport ◽  
Linear Thermal Expansion ◽  
Solid State Reactions ◽  
Partial Substitution ◽  
Cell Parameters

Using solid-state reactions method, the solid solutions of layered oxygen-deficient perovskites NdBa1–xSrxFeCo0.5Cu0.5O5+δ (0.02 ≤ x ≤ 0.20) were prepared; their crystal structure, thermal stability, thermal expansion, electrical conductivity and thermopower were studied. It was found that NdBa1–xSrxFeCo0.5Cu0.5O5+δ phases crystallize in tetragonal syngony (space group P4/mmm) and are p-type semiconductors, whose conductivity character at high temperatures changed to the metallic one due to evolution from the samples of so-called weakly-bonded oxygen. Partial substitution of barium by strontium in NdBaFeCo0.5Cu0.5O5+δ leads to the small decreasing of unit cell parameters, thermal stability and thermopower of NdBa1–xSrxFeCo0.5Cu0.5O5+δ solid solutions, increasing of their electrical conductivity values and slightly affects their linear thermal expansion coefficient and activation energy of electrical transport values.

scholarly journals Preparation, Sinterability, Electrical Transport and Thermal Expansion of Perovskite-Type La0.8Ca0.2CrO3 Composites

2020 ◽  
Vol 10 (13) ◽  
pp. 4634
Author(s):  
Linlin Liu ◽  
Mingmei Jiang ◽  
Juanjuan Yin ◽  
Wenfeng Guo ◽  
Tifeng Jiao
Keyword(s):  
Electrical Conductivity ◽  
Thermal Expansion ◽  
Solid State ◽  
Electrical Transport ◽  
Sintering Temperature ◽  
Electronic Conductivity ◽  
Combustion Method ◽  
Synthesis Methods ◽  
Conventional Solid State Reaction ◽  
Perovskite Type

Perovskite-type was synthesized by two methods, the combustion method and conventional solid state reaction (SSR) method. The effect of synthesis methods on sinterability and physical properties of the ceramic were investigated. The results show that there are advantages of the combustion method in producing doped lanthanum chromites. Compared with the SSR method, the combustion method reduces the sintering temperature of La0.8Ca0.2CrO3, elevates the electronic conductivity and thermal expansion coefficient (TEC) of the ceramic, due to optimizing the microstructure. At the same densities level (–93%), the specimen synthesized by the combustion method reaches a superior electrical conductivity of 31.6 S·cm-1 and a compatible TEC of 10.7 × 10−6 K−1 at 800 °C.

Microstructural and Microchemical Characterization of Nickel Sulfide Inclusions in Plate Glass

1991 ◽  
Vol 49 ◽  
pp. 962-963
Author(s):  
J. Cooper ◽  
O. Popoola ◽  
W. M. Kriven
Keyword(s):  
Thermal Expansion ◽  
Phase Transformation ◽  
Glass Matrix ◽  
Nickel Sulfide ◽  
Plate Glass ◽  
Thermal Expansion Mismatch ◽  
Volume Increase ◽  
Β Phase ◽  
Microchemical Characterization

Nickel sulfide inclusions have been implicated in the spontaneous fracture of large windows of tempered plate glass. Two alternative explanations for the fracture-initiating behaviour of these inclusions have been proposed: (1) the volume increase which accompanies the α to β phase transformation in stoichiometric NiS, and (2) the thermal expansion mismatch between the nickel sulfide phases and the glass matrix. The microstructure and microchemistry of the small inclusions (80 to 250 μm spheres), needed to determine the cause of fracture, have not been well characterized hitherto. The aim of this communication is to report a detailed TEM and EDS study of the inclusions.

Thermal Expansion of Martensitic A15 Superconductors: V3Si

1995 ◽  
Vol 05 (C8) ◽  
pp. C8-1109-C8-1113
Author(s):  
T.R. Finlayson, ◽  
M. Liu ◽  
T.F. Smith
Keyword(s):  
Thermal Expansion
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