Synthesis and characterization of Ln-123 superconductors

A sol-gel method was applied to prepare precursors for NdBa2Cu3O7-x (Nd-123) and SmBa2Cu3O7-x (Sm-123) superconducting compounds. The sintered products were examined by X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The powders sintered at 950 and 1000 ?C showed the formation of monophasic Nd-123 and Sm-123 superconductors. The formation of Nd-123 and Sm-123 phases from the sol-gel derived precursors at higher temperatures (1050 and 1100 ?C), however, did not proceed due to the melting process. The correlation between the TC for different lanthanides (Ln Ho, Nd and Sm) in the Ln-123 compound and orthorhombicity and oxygen stoichiometry were also estimated.

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SYNTHESIS AND CHARACTERIZATION OF Y2SiO5:Ce3+ PHOSPHOR MATERIALS BY SOL–GEL PROCESS

Surface Review and Letters ◽

10.1142/s0218625x10013771 ◽

2010 ◽

Vol 17 (01) ◽

pp. 59-62 ◽

Cited By ~ 4

Author(s):

YOUNG-JAE KO ◽

JONG KYU LEE ◽

MIN-CHEOL CHU ◽

DONG-SIK BAE

Keyword(s):

Electron Microscopy ◽

Sol Gel ◽

Synthesis And Characterization ◽

Luminescence Spectra ◽

Photoluminescence Spectra ◽

X Ray Diffraction ◽

X Ray ◽

Sol Gel Process ◽

Scanning Electron

Y 2 SiO 5: Ce 3+ particles was synthesized by sol–gel process. In all samples treated at 1100°C, monoclinic X 1 phase for all cerium concentration. Luminescence spectra shows broad Ce 3+ luminescence in Y 2 SiO 5 host, which picks around 450 nm. The synthesized and calcined powders were characterized by thermogravimetry-differential scanning calorimeter (TG-DSC), X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and photoluminescence spectra (PL).

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Hydrothermal Synthesis and Characterization of BiFeO3 Polyhedral Crystallites

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.174-177.508 ◽

2012 ◽

Vol 174-177 ◽

pp. 508-511

Author(s):

Lin Lin Yang ◽

Yong Gang Wang ◽

Yu Jiang Wang ◽

Xiao Feng Wang

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Transmission Electron Microscopy ◽

Synthesis And Characterization ◽

X Ray Diffraction ◽

Xrd Pattern ◽

X Ray ◽

Transmission Electron ◽

Scanning Electron

BiFeO3 polyhedrons had been successfully synthesized via a hydrothermal method. The as-prepared products were characterized by power X-ray diffraction (XRD) pattern, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The possible mechanisms for the formation of BiFeO3 polyhedrons were discussed. Though comparison experiments, it was found that the kind of precursor played a key role on the morphology control of BiFeO3 crystals.

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Synthesis and characterization of apatite silicated powders with wet precipitation method

E3S Web of Conferences ◽

10.1051/e3sconf/202123400106 ◽

2021 ◽

Vol 234 ◽

pp. 00106

Author(s):

Houda Labjar ◽

Hassan Chaair

Keyword(s):

Electron Microscopy ◽

Heat Treatment ◽

Analytical Techniques ◽

Precipitation Method ◽

Synthesis And Characterization ◽

X Ray Diffraction ◽

X Ray ◽

Wet Precipitation ◽

Scanning Electron

The synthesis of apatite silicated Ca10(PO4)6-x(SiO4)x(OH)2-x (SiHA) with 0≤x≤2 was investigated using a wet precipitation method followed by heat treatment using calcium carbonate CaCO3 and phosphoric acid H3PO4 and silicon tetraacetate SiC8H20O4 (TEOS) in medium of water ethanol, with three different silicate concentrations. After drying, the samples are ground and then characterized by different analytical techniques like X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning electron Microscopy (SEM) and chemical analysis.

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Synthesis and characterization of homogeneous lead-substituted tin oxide with the (110) face of rutile structure

Journal of Materials Research ◽

10.1557/jmr.2000.0298 ◽

2000 ◽

Vol 15 (10) ◽

pp. 2076-2079

Author(s):

Chika Nozaki ◽

Takashi Yamada ◽

Kenji Tabata ◽

Eiji Suzuki

Keyword(s):

Electron Microscopy ◽

Tin Oxide ◽

Photoelectron Spectroscopy ◽

Synthesis And Characterization ◽

X Ray Diffraction ◽

Rutile Structure ◽

X Ray ◽

Transmission Electron ◽

Scanning Electron

Synthesis of a rutile-type lead-substituted tin oxide with (110) face was investigated. The characterization was performed by x-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive x-ray spectroscopy, infrared spectroscopy, x-ray photoelectron spectroscopy, and Brunauer–Emmett–Teller surface area measurements. The homogeneous rutile-type lead-substituted tin oxide was obtained until 4.1 mol% of tin was substituted with lead. The surface of obtained oxide had a homogeneously lead-substituted (110) face.

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Characterization of Titanium Dioxide Nanopowder Synthesized by Sol Gel Grinding Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.626.425 ◽

2012 ◽

Vol 626 ◽

pp. 425-429 ◽

Cited By ~ 2

Author(s):

N.N. Hafizah ◽

Mohamed Zahidi Musa ◽

Mohamad Hafiz Mamat ◽

M. Rusop

Keyword(s):

Electron Microscopy ◽

Anatase Phase ◽

Sol Gel ◽

Precursor Concentration ◽

X Ray Diffraction ◽

X Ray ◽

Grinding Method ◽

Fesem Micrographs ◽

Scanning Electron

In this study, TiO2nanopowder was synthesized via a sol-gel grinding method. The effects of TiO2precursor concentration of TiO2nanopowder were investigated. The TiO2nanopowder obtained were characterized using X-ray diffraction (XRD), Raman spectroscopy and field emission scanning electron microscopy (FESEM) for their structural properties. From the calculation of the crystallite size in XRD, the size of the nanoparticles obtained is 49.55 nm at the highest TiO2precursor concentration. In contrast, at the lower concentration of 0.4 molar give the cryatallite size of 12.84 nm. Further, XRD and Raman spectrum results confirmed the TiO2nanopowder obtain composed of only anatase phase. The FESEM micrographs of TiO2nanopowder also were discussed in this paper.

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Synthesis and Characterization of Star-Like Copper Oxide (CuO) with Submicrometer Sizes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.465.186 ◽

2012 ◽

Vol 465 ◽

pp. 186-191

Author(s):

Shou Long Gong ◽

Fang Lin Du

Keyword(s):

Electron Microscopy ◽

Synthesis And Characterization ◽

Simple Liquid ◽

Liquid Phase Deposition ◽

Monoclinic Structure ◽

X Ray Diffraction ◽

X Ray ◽

Scanning Electron

Star-like CuO with submicrometer sizes was fabricated via a simple liquid-phase deposition with the assistant of PVP and Na2MoO4. The as-prepared CuO have been characterized by X-ray diffraction(XRD) and scanning electron microscopy (SEM). The results showed that the as-prepared CuO owned monoclinic structure, the concentrations of PVP, Na2MoO4 and NaOH are very important to the morphology of CuO. The quality of PVP impacts the formation of thin flakes on the skeletons. Meanwhile, the growth of dendritic skeletons was depended on the addition of Na2MoO4, and the effect of NaOH is to control the dimension of CuO structure.

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Darstellung und Charakterisierung des Silber(I,II,III)-oxidclathrates Ag7O8HCO3 / Synthesis and Characterization of the Silver(I,II,III) Oxide Clathrate Ag7O8HCO3

Zeitschrift für Naturforschung B ◽

10.1515/znb-2000-0913 ◽

2000 ◽

Vol 55 (9) ◽

pp. 882-886 ◽

Cited By ~ 10

Author(s):

Martin Jansen ◽

Sascha Vensky

Keyword(s):

Electron Microscopy ◽

Thermal Analysis ◽

Scanning Electron Microscopy ◽

Magnetic Susceptibility ◽

Solid State Nmr ◽

Synthesis And Characterization ◽

X Ray Diffraction ◽

X Ray ◽

Scanning Electron

The silver(I,II,III) oxide clathrate Ag7O8HCO3 was synthesized by anodic oxidation of silver(I) in a suspension of Ag2CO3 in an aqueous AgF solution. The title compound was characterized by single crystal X-ray diffraction (cubic, Fm3̄m, a = 9.8085(3) Å, Z = 4), scanning electron microscopy, thermal analysis, IR spectroscopy, 1H-solid state-NMR and measurement of the magnetic susceptibility

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Thick PLZT Films Grown by Sol-gel for Optical Device Applications

MRS Proceedings ◽

10.1557/proc-541-735 ◽

1998 ◽

Vol 541 ◽

Cited By ~ 2

Author(s):

M. Linnik ◽

O. Wilson ◽

A. Christou

Keyword(s):

Electron Microscopy ◽

Sol Gel ◽

Phase Modulator ◽

X Ray Diffraction ◽

X Ray ◽

Device Applications ◽

Gel Technique ◽

Scanning Electron

AbstractThe preparation and characterization of thick PLZT films for spatial phase modulator applications are reported. Films were fabricated on LSCO/LAO substrates by a sol-gel technique using multiple heat-treatment parameters. The crystal quality of PLZT 9/65/35 films was investigated by X-ray diffraction and scanning electron microscopy.

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Synthesis and Battery Studies of Sodium Cobalt Oxides, NaCoO2 Cathodes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.545.185 ◽

2012 ◽

Vol 545 ◽

pp. 185-189 ◽

Cited By ~ 15

Author(s):

Nur Khairani Samin ◽

Rusdi Roshidah ◽

Norashikin Kamarudin ◽

Norlida Kamarulzaman

Keyword(s):

Electron Microscopy ◽

Sol Gel ◽

Cobalt Oxides ◽

X Ray Diffraction ◽

Battery System ◽

X Ray ◽

Discharge Profile ◽

Charge Discharge ◽

Scanning Electron

Sodium based batteries presented a new and promising battery system. This work attempted to develop NaCoO2 material using a new sol-gel method. The characterization of this sodium based material was done by using Thermogravimetric Analysis (TGA), X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM). Cyclic voltammetry showed that the material exhibit reversible oxidation and reduction peaks which meant that a sodium based battery was possible for this material. Electrochemical charge-discharge profile was performed to study the voltage plateaus exhibited by the material. It showed discharge plateaus of between 3.2 to 2.3 V and another plateau at 0.6 V.

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Synthesis and Characterization of Titania-Rice Husk Silica Composites as Photocatalyst

Indonesian Journal of Chemistry ◽

10.22146/ijc.21221 ◽

2015 ◽

Vol 15 (1) ◽

pp. 36-42 ◽

Cited By ~ 5

Author(s):

Posman Manurung ◽

Rudy Situmeang ◽

Ediman Ginting ◽

Indra Pardede

Keyword(s):

Rice Husk ◽

Sol Gel ◽

Bet Surface Area ◽

Synthesis And Characterization ◽

Ultraviolet Rays ◽

X Ray Diffraction ◽

Titanium Butoxide ◽

X Ray ◽

Scanning Electron

This article describes the synthesis of titania-silica composites by a sol-gel method using a mixture of silica of rice husk and titanium butoxide sols. Microstructures were examined at calcination temperature in the range of 500 to 700 °C, with temperatures interval of 50 °C. The sintered catalysts were subsequently tested for photodegradation of methylene blue (MB) under ultraviolet and sunlight rays. Physical characteristics were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM)/energy dispersive X-ray spectroscopy (EDS), and Brunauer-Emmett-Teller (BET). The XRD results did not show the presence of silica crystal phase in each sample. The results showed that the highest BET surface area of samples was obtained at the temperature of 650 °C. In sample calcined 500 °C, the activity of the catalyst on MB was relatively similar in both sunlight and ultraviolet rays.

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