Bulletin of Materials Science
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Synthesis and thermophysical studies of polyanilines
Bulletin of Materials Science - Tập 42 - Trang 1-9 - 2019
Aniline was polymerized under different experimental conditions such as interfacial polymerization, rapid mixing in hydrochloric acid medium and classical bulk polymerization method using p-toluene sulphonic acid. The resulting polyanilines were characterized by infrared, X-ray diffraction, conductance and scanning electron microscopic analysis. The main emphasis of the paper is to study the therm......
Gibbs’ energy of formation of YBa2Cu3O7-x (tetragonal)
Bulletin of Materials Science - Tập 14 - Trang 983-987 - 1991
The high temperature ceramic oxide superconductor YBa2Cu3O7-x
(1–2–3 compound) is generally synthesized in an oxygen-rich environment. Hence any method for determining its thermodynamic stability should operate at a high oxygen partial pressure. A solid-state cell incorporating CaF2 as the electrolyte and functioning under pure oxygen at a pressure of 1·01 × 105 Pa has been employ......
Systematic hardness studies on lithium niobate crystals
Bulletin of Materials Science - Tập 23 - Trang 147-150 - 2000
In view of discrepancies in the available information on the hardness of lithium niobate, a systematic study of the hardness has been carried out. Measurements have been made on two pure lithium niobate crystals with different growth origins, and a Fe-doped sample. The problem of load variation of hardness is examined in detail. The true hardness of LiNbO3 is found to be 630 ± 30 kg/mm2. The Fe-do......
Influence of bismuth on properties and microstructures of Sr0.5Ba0.5−xBixTiO3 thin films
Bulletin of Materials Science - Tập 29 Số 5 - Trang 523-527 - 2006
Synthesis, impedance and dielectric properties of LaBi5Fe2Ti3O18
Bulletin of Materials Science - Tập 24 - Trang 487-495 - 2001
The compound, LaBi5Fe2Ti3O18, is a five-layered material belonging to the family of bismuth layered structure ferroelectromagnetics. D.c. and a.c. conductivity measurements were performed on the samples. Dielectric measurements were also performed on these samples. Combined impedance and modulus plots were used as tools to analyse the sample behaviour as a function of frequency. Cole-Cole plots sh......
Synthesis of ZnO comb-like nanostructures for high sensitivity $$\hbox {H}_{2}$$ S gas sensor fabrication at room temperature
Bulletin of Materials Science - Tập 40 - Trang 1061-1068 - 2017
Zinc oxide (ZnO) comb-like nanostructures were successfully synthesized on the silicon substrate without a catalyst via chemical vapour deposition. The morphology and crystal structure of the product were characterized by scanning electron microscope and X-ray diffractometer. In this research, a simple gas sensor was fabricated based on the principle of change in resistivity due to oxygen vacancie......
Effect of annealing treatment on optical properties and microstructural variation of $$\hbox {WO}_{3}/\hbox {Ag}/\hbox {WO}_{3}$$ multilayer nano-films
Bulletin of Materials Science - Tập 41 - Trang 1-7 - 2018
Structural and optical properties of
$$\text {WO}_{3}/\text {Ag}/\text {WO}_{3}$$
nano-multilayer composites were investigated for heat mirror applications.
$$\text {WO......
Influence of substrate-induced strain on exchange bias effect in YSMO/LSMO heterostructures
Bulletin of Materials Science - Tập 46 - Trang 1-7 - 2023
Magnetic properties of Y0.67Sr0.33MnO3 (YSMO) and La0.67Sr0.33MnO3 (LSMO) thin films heterostructures (YSMO/LSMO) deposited on single-crystalline (001) SrTiO3 (STO), (001) LaAlO3 (LAO) and MgO substrates using pulsed laser deposition technique were investigated. Magnetization (M) vs. the applied field (H) measurements revealed shift in hysteresis loop showing the exchange bias effect of about 80 O......
Synergism in anticorrosive paints
Bulletin of Materials Science - Tập 39 - Trang 749-757 - 2016
The present work depicts synergism anticorrosive behaviour between zinc hypophosphite and zinc phosphate in a commercial pigment mixture. Also, the performance of anticorrosive paints was evaluated. Synergism anticorrosive behaviour was evaluated by corrosion potential and linear polarization measurements in pigment suspensions. The protective layer obtained with this pigment mixture was investiga......
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