scholarly journals Synthesis and Characterization of SILAR-Deposited Leaf-Like Copper Sulphide Films

2021 ◽  
Author(s):  
Chika Ugbo ◽  
Agnes Chinecherem Nkele ◽  
Ada Agbogu ◽  
A. B. C. Ekwealor ◽  
Malik Maaza ◽  
...  
Keyword(s):  
Optical Devices ◽  
Copper Sulphide ◽  
Orthorhombic Crystal ◽  
Silar Method ◽  
Orthorhombic Crystal Structure ◽  
Layer Adsorption ◽  
Potential Applications ◽  
Synthesized Materials ◽  
Deposited Films

Abstract Successful synthesis of copper sulphide films deposited via successive ionic layer adsorption and reaction (SILAR) method at 100, 150, and 200 cycles. The deposited films were characterized for their morphological, structural, elemental, optical, and electrochemical features. A leaf-like morphology was obtained for the CuS films. Orthorhombic crystal structure with distinct peaks at (262) and (116) planes were observed. Good optical features, high absorbance with band gap energies ranging from 1.95 eV to 1.98 eV. The synthesized films possessed good electrochemical features with supercapacitive abilities. The synthesized materials find potential applications in optical devices and supercapacitors.

Preparation and characterization of CdS–Bi2S3 nanocomposite thin film by successive ionic layer adsorption and reaction (SILAR) method

2012 ◽  
Vol 43 (3) ◽  
pp. 1095-1100 ◽  
Author(s):  
Dipalee J. Desale ◽  
Shaheed Shaikh ◽  
Arindam Ghosh ◽  
Ravikiran Birajadar ◽  
Farha Siddiqui ◽  
...  
Keyword(s):  
Thin Film ◽  
Nanocomposite Thin Film ◽  
Silar Method ◽  
Layer Adsorption ◽  
Ionic Layer

Characterization of Aerogels – Challenges and Prospects

2014 ◽  
Vol 91 ◽  
pp. 54-63 ◽  
Author(s):  
Gudrun Reichenauer
Keyword(s):  
Catalyst Support ◽  
Optical Devices ◽  
Structure Property ◽  
Severe Problem ◽  
The Past ◽  
Structure Property Relationships ◽  
Potential Applications ◽  
Directed Development ◽  
Non Destructive

Aerogels are porous materials with potential applications in fields ranging from thermal insulation, catalyst support, filters, electrical storage, components in optical devices, mechanical damping all the way to drug release. However, careful reliable characterization is the base for both, understanding of fundamental structure - property relationships as well as a directed development of materials and composites for specific applications. The review therefore addressed severe problem upon aerogel characterization that have been identified in the past and presents reliable non-destructive alternatives and novel methods that can be applied for the characterization of aerogels as well as their gel precursors.

Characterization of Dy2S3 thin films deposited by successive ionic layer adsorption and reaction (SILAR) method

2021 ◽  
pp. 106693
Author(s):  
P.P. Bagwade ◽  
D.B. Malavekar ◽  
S.B. Ubale ◽  
T.T. Ghogare ◽  
R.N. Bulakhe ◽  
...  
Keyword(s):  
Thin Films ◽  
Silar Method ◽  
Layer Adsorption ◽  
Ionic Layer

scholarly journals Characterization of nanocrystalline cadmium telluride thin films grown by successive ionic layer adsorption and reaction (SILAR) method

2006 ◽  
Vol 29 (2) ◽  
pp. 165-168 ◽  
Author(s):  
A. U. Ubale ◽  
R. J. Dhokne ◽  
P. S. Chikhlikar ◽  
V. S. Sangawar ◽  
D. K. Kulkarni
Keyword(s):  
Thin Films ◽  
Cadmium Telluride ◽  
Silar Method ◽  
Layer Adsorption ◽  
Ionic Layer

On the Formation of Silicide Precipitates in Niobium-Silicide Based Composites

1998 ◽  
Vol 552 ◽  
Author(s):  
B. P. Bewlay ◽  
R. J. Grylls ◽  
H. L. Fraser
Keyword(s):  
Crystal Structure ◽  
Directional Solidification ◽  
Orientation Relationship ◽  
High Temperatures ◽  
Aircraft Engines ◽  
Orthorhombic Crystal ◽  
Detailed Characterization ◽  
Orthorhombic Crystal Structure ◽  
Very High

ABSTRACTComposites based on Nb-Si are attractive candidates for use as structural materials at the very high temperatures required for future aircraft engines. The composites described were produced by directional solidification, which gives a microstructure consisting of Nb dendrites with an Nb3Si-Nb eutectic. The aim of this paper is to provide a detailed characterization of precipitates observed in the Nb dendrites in both binary and higher-order alloys. The precipitates possess the Nb3Si stoichiometry, but not the stable Nb3Si structure. The precipitates form a metastable orthorhombic crystal structure which is related to the Nb matrix via a simple orientation relationship.

scholarly journals SYNTHESIS AND CHARACTERIZATION OF LEAD-FREE PIEZOELECTRIC (K0.5Na0.5)NbO3 PRODUCED WITH IMPROVED CALCINATION TEMPERATURE

2020 ◽  
Vol 82 (2) ◽  
Author(s):  
Nor Amalina Ahmad ◽  
Dzetty Soraya Abdul Aziz ◽  
Norni Hidayawati Mat Daud ◽  
Rahim Noor ◽  
Amir Azam Khan
Keyword(s):  
Calcination Temperature ◽  
Sintering Temperature ◽  
Milling Process ◽  
Lead Free ◽  
Sintered Pellet ◽  
Sintering Process ◽  
Potassium Sodium Niobate ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure

Potassium sodium niobate (KNN) is one of the lead free piezoelectric material that catch the attention of researchers and also those in the industrial field because of its stable piezoelectric responses and environmental friendly composition. The recent development of KNN shows that many methods have been used to synthesize the KNN but the stoichiometric Ka0.5Na0.5NbO3 composition is extremely difficult to consolidate. One of the ways to overcome the problem is to precisely pre-calcine and use milling process for proper homogenization followed by natural sintering process. In this paper, attempt has been made to synthesize the KNN produced at 750 oC calcination temperature. The results of 1060oC sintering temperature for 2 hours show a good composition of KNN with orthorhombic crystal structure where the final sintered pellet can reach to a relative density up to 87.13 %. 

Effect of Strontium Doping Into CaBi2Nb2O9 Aurivillius Oxide Nanoceramics: Structural and Electrical Properties

2020 ◽  
Vol 15 (1) ◽  
pp. 32-40
Author(s):  
Ouissem Jalled ◽  
Mariah Alhassan ◽  
Seham R. Alharbi ◽  
Zaynab Alharbi ◽  
Yas Al-Hadeethi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Sol Gel ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Thermogravimetric Analyzer ◽  
Transmission Electron ◽  
Structural And Electrical Properties ◽  
Gel Combustion ◽  
Dielectric Constant Measurement

Herein, we report the synthesis and characterization of Ca1-xSrxBi2Nb2O9 (CSBNO) (0 ≤ x ≤ 1) nanoceramics prepared using sucrose-assisted sol–gel combustion methods. The synthesized nanoceramics were characterized by different tools like differential thermal and thermogravimetric analyzer (DTA-TG), high resolution transmission electron microscopy (HRTEM), Fourier transform infrared (FTIR) spectrometer, X-ray powder diffraction (XRD), and impedance analyzer. DTA-TG reveals that the optimum temperature of calcination of CBN is higher than 1000 °C. The FTIR revealed the formation of CaBi2Nb2O9 (CBNO) at 614 cm-1. The XRD confirmed that all samples exhibited orthorhombic crystal structure. Increased orthorhombic distortion was spotted for doped CBNO and the structure acquires extra orthorhombicity through Sr doping. The TEM measurement inspected the increase of the grain size due to the inclusion of strontium into the orthorhombic crystal structure of CBNO from 56 nm to 76 nm. The dielectric constant measurement demonstrated that the increase in Sr content is associated with steady decrease in Curie temperature from 1207 K up to 720 K. The dielectric loss exhibited a minimum value at x = 0.5 and high stability along the temperature range of 300–850 K. Such property may enable this nanocomposite to be used for the application of FeRAM.

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