Thermodynamic Examination of Quaternary Compounds in the Ag–Fe–(Ge, Sn)–Se Systems by the Solid-State EMF Method

2021 ◽  
pp. 271-283
Author(s):  
Mykola Moroz ◽  
Fiseha Tesfaye ◽  
Pavlo Demchenko ◽  
Myroslava Prokhorenko ◽  
Bohdan Rudyk ◽  
...  
Keyword(s):  
Solid State ◽  
Emf Method ◽  
Quaternary Compounds

Activity of SrO in La1−xSrxMnO3−y (x=0.065, 0.10, 0.15 or 0.20) by a solid state EMF method

2001 ◽  
Vol 322 (1-2) ◽  
pp. 113-119 ◽  
Author(s):  
S Arul Antony ◽  
K Swaminathan ◽  
K.S Nagaraja ◽  
O.M Sreedharan
Keyword(s):  
Solid State ◽  
Emf Method

Determination of thermodynamic properties of Ca 4 Fe 9 O 17 by solid state EMF method

2016 ◽  
Vol 658 ◽  
pp. 939-945 ◽  
Author(s):  
Markus Aspiala ◽  
Taufiq Hidayat ◽  
Pekka Taskinen ◽  
Evgueni Jak
Keyword(s):  
Solid State ◽  
Thermodynamic Properties ◽  
Emf Method

Thermodynamic properties of Ag–Au alloys measured by a solid-state electrolyte EMF method

2020 ◽  
Vol 689 ◽  
pp. 178658
Author(s):  
Imam Santoso ◽  
Pekka Taskinen ◽  
Ari Jokilaakso ◽  
Daniel Lindberg
Keyword(s):  
Solid State ◽  
Thermodynamic Properties ◽  
Emf Method ◽  
Solid State Electrolyte

Structural and Electrical Properties of Pb1-xYbxSeyTe1-y Quaternary Compound Synthesized by Solid State Microwave Assisted Plasma

2012 ◽  
Vol 501 ◽  
pp. 257-260
Author(s):  
Arshad Hmood ◽  
Arej Kadhim ◽  
Abu Hassan Haslan
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Solid State ◽  
Thermal Evaporation ◽  
Quaternary Compound ◽  
Glass Substrates ◽  
Microwave Assisted ◽  
Quaternary Compounds ◽  
Structural And Electrical Properties ◽  
Scanning Electron

Solid-state microwave as a method was used to synthesize quaternary compounds Pb1-xYbxSe0.2Te0.8 from initial components to obtain polycrystalline ingots with large grain size. Thin films of Pb1-xYbxSe0.2Te0.8 were then deposited onto glass substrates using thermal evaporation in vacuum, which have a polycrystalline rock salt (NaCl) structure for powders, and thin films. The field emission scanning electron microscopy (FESEM) images reveal that the Pb1-xYbxSe0.2Te0.8 thin films with Yb-doped have uniform crystal grain size and dense nanostructure. The thermoelectric properties of thin films were measured in the temperature range 298–523 K. The Seebeck coefficient of films increased with x when x=0.015, 0.03 and 0.045, while decreased for x=0.06−0.105.

scholarly journals The Se2 (GAS) fugacity in systems with noble metals: chrisstanleyite Ag2Pd3Se4-naumannite Ag2Se-β-PdSe2 and luberoite Pt5Se4-sudovikovite PtSe2

2019 ◽  
Vol 485 (6) ◽  
pp. 720-725
Author(s):  
A. V. Kristavchuk ◽  
A. Vymazalova ◽  
E. G. Osadchii ◽  
I. V. Vikentyev ◽  
D. A. Chareev ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Atmospheric Pressure ◽  
Low Temperatures ◽  
Noble Metals ◽  
Galvanic Cell ◽  
Emf Method ◽  
Temperature Ranges ◽  
Ion Conducting ◽  
Gas Space

The reactions of 6Ag(cr) + 3PdSe2(cr) = 2Ag2Se(cr) + Ag2Pd3Se4(cr) and 12Ag(cr) + 5PtSe2(cr) = 6Ag2Se(cr) + Pt5Se4(cr) were studied with the EMF method in a completely solid-state galvanic cell with an Ag ion-conducting solid electrolyte with overall gas space (Ar under atmospheric pressure). The EMF vs T dependencies were obtained in the temperature ranges of Т = 425-648 K and 501-713 K, respectively. Then, they were recalculated for gaseous Se fugacity in dependence on the temperature for non-variant equilibriums of Ag2Pd3Se4 (chrisstanleyite)-β-PdSe2 (the phase, which transforms into verbeekite under low temperatures)-Ag2Se (naumannite) and Pt5Se4 (luberoite)-PtSe2 (sudovikovite): logfSe2(gas)(Ag2Pd3Se4/Ag2Se/PdSe2) = 7.71 ± 0.05 - 8.524 ± 0.026(1000/T), logfSe2(gas)(Pt5Se4/PtSe2) = 7.135 ± 0.027 - 12.274 ± 0.016(1000/T).

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.

The Collagenic Molecular Structural Unit of Solid State Complexes

1971 ◽  
Vol 29 ◽  
pp. 478-479
Author(s):  
Kenneth M. Richter ◽  
John A. Schilling
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Structural Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Naoh Treatment

The structural unit of solid state collagen complexes has been reported by Porter and Vanamee via EM and by Cowan, North and Randall via x-ray diffraction to be an ellipsoidal unit of 210-270 A. length by 50-100 A. diameter. It subsequently was independently demonstrated by us in dog tendon, dermis, and induced complexes. Its detailed morphologic, dimensional and molecular weight (MW) aspects have now been determined. It is pear-shaped in long profile with m diameters of 57 and 108 A. and m length of 263 A. (Fig. 1, tendon, KMnO4 fixation, Na-tungstate; Fig. 2a, schematic of unit in long, C, and x-sectional profiles of its thin, xB, and bulbous, xA portions; Fig. 2b, tendon essentially unmodified by ether and 0.4 N NaOH treatment, Na-tungstate). The unit consists of a uniquely coild cable, c, of ṁ 22.9 A. diameter and length of 2580-3316 A. The cable consists of three 2nd-strands, s, each of m 10.6 A.

Structure-property relations of liquid crystalline polymers

1987 ◽  
Vol 45 ◽  
pp. 460-463
Author(s):  
Linda C. Sawyer
Keyword(s):  
Solid State ◽  
Liquid Crystalline ◽  
Structural Model ◽  
Crystalline Polymer ◽  
Liquid Crystalline Polymers ◽  
Mechanical Anisotropy ◽  
Structure Property ◽  
Preparation Methods ◽  
Crystalline Polymers ◽  
Extended Chain

Recent liquid crystalline polymer (LCP) research has sought to define structure-property relationships of these complex new materials. The two major types of LCPs, thermotropic and lyotropic LCPs, both exhibit effects of process history on the microstructure frozen into the solid state. The high mechanical anisotropy of the molecules favors formation of complex structures. Microscopy has been used to develop an understanding of these microstructures and to describe them in a fundamental structural model. Preparation methods used include microtomy, etching, fracture and sonication for study by optical and electron microscopy techniques, which have been described for polymers. The model accounts for the macrostructures and microstructures observed in highly oriented fibers and films.Rod-like liquid crystalline polymers produce oriented materials because they have extended chain structures in the solid state. These polymers have found application as high modulus fibers and films with unique properties due to the formation of ordered solutions (lyotropic) or melts (thermotropic) which transform easily into highly oriented, extended chain structures in the solid state.

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