Conveners
A13: Material Physics
- Sasiporn Prasertpalichat (Naresuan University)
A13: Material Physics
- Theerachai ฺBongkarn (Department of Physics, Faculty of Science, Naresuan University)
In this research, the manganese doped cadmium sulfide (Mn-doped CdS) thin films were prepared on glass substrates using successive ionic layer adsorption and reaction (SILAR) method. The thin films were prepared by different mixing percentage of manganese with cadmium sulfide precursors in the range of 1 - 20 mole%. The optical properties were investigated by ultraviolet-visible...
In this work, [KNbO3]0.9 – [BaNi0.5Nb0.5O3]0.1 (KBNNO) perovskite ceramics are synthesized under various conditions by using the solid-state combustion technique. Their microstructural, Raman, dielectric, optical, and photovoltaic properties are investigated. X-ray diffraction spectroscopy reveals that the synthesized ceramics have a cubic structure. A high purity KBNNO sample is obtained at...
The ternary wide band gap semiconductor, MgGeN$_2$ is one of the group II-IV-N$_2$ compounds which have recently become potential alternatives for the group III-N materials. This is as the II-IV-N$_2$ has two different cations, so its electronic properties can be modified/tuned by varying the concentration of the group II or IV elements. The crystal structure of II-IV-N$_2$ can be considered...
High quality and large scale graphene are required for large-scale applications, especially transparent conductive flexible touch-screen panels. Chemical vapor deposition is so far the best method for the synthesis of high quality graphene in the large scale. In this work, we have synthesized multi-layer graphene on copper foils by low pressure chemical vapor deposition from acetylene...
High chromium cast irons are widely used for wear-parts in the mining, mineral and cement industries, due to their high abrasion resistance, relative low cost and ease of production. Carbide-forming elements addition and heat treatments were improved their properties. In this work, the effects of W addition and heat treatment on the microstructure and hardness of nominal 28 wt.%Cr high...
Sintered Fe-Mo-Si-C alloys, produced by admixing 4.0 wt.% silicon carbide to two different pre-alloyed powders with compositions of Fe-0.85Mo and Fe-1.5Mo, sintering at 1250$^o$C for 45 minutes and cooling in a vacuum furnace, showed a microstructure similar to that of a ductile cast iron. The microstructure of the sintered alloys was characterized by the bull’s eye structure consisting of a...
Calcium carbonate powders were prepared by precipitation method under the different annealing temperature etc. 300 $^o$C, 350 $^o$C, 400 $^o$C and 450 $^o$C. Surface morphologies and crystal structures of synthesized $CaCO_3$ powders were analyzed by SEM and XRD, respectively. The result show that the particle size is to be reduced with increase annealing temperature. The approximately...
The impact of different calcination temperature (550ºC, 650ºC, 750ºC and 850ºC) on the structural/electrical properties of sintered Cu/Sm co-doped CeO2 prepared by sol-gel combustion were studied. The structural property was studied by X-ray diffraction (XRD) and Raman spectroscopy and ultraviolet visible(Uv-vis). The composition and chemical state of Sm/Cu and Ce and electrical conductivity...
Mxene is a group of 2D materials known for their promising properties for industrial electronic devices and gas sensing behavior. The objective of this study is to investigate the electronic property of a MXene named dimolybdenum carbide (Mo$_2$C) under applying biaxial stress and our problem is how will the material change when biaxial stress is applied. All the possible phases have been...
Diuron is famous pesticide and its residual can contaminate in natural water resource resulting in environmental issue and human health. There are several processes that have been used to overcome diuron contamination including adsorption, biochemical, and advanced oxidation processes. An electrochemical advanced oxidation process (EAOP) is one of the advanced oxidation processes used to...
Since the discovery the first YBaCuO superconductor has been found in 1987, called as Y123 (YBa$_2$Cu$_3$O$_7$$_-$$_x$) superconductor. The effect of Ag$_2$O on the critical temperature was investigate. However, the new YBaCuO called Y156 superconductor was found, then we interest in effect of Ag$_2$O on some physical properties of this superconductor. The Y156 superconductor doped Ag$_2$O...
