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Journal of Ovonic Research最新文献

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Investigations on the synthesis and growth and structural, spectral, optical, mechanical and thermal properties of non-linear optical single crystals of Bis-L-Seriniumoxalate Dihydrate (BLSOD) 双-l -草酸丝氨酸二水合物(BLSOD)非线性光学单晶的合成、生长及结构、光谱、光学、力学和热性能研究
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2023-01-01 DOI: 10.15251/jor.2023.191.43
A. M. Hidayathullah, R. S. Samuel, V. Chithambaram, Raja Raghavan, S. Janarthanan
{"title":"Investigations on the synthesis and growth and structural, spectral, optical, mechanical and thermal properties of non-linear optical single crystals of Bis-L-Seriniumoxalate Dihydrate (BLSOD)","authors":"A. M. Hidayathullah, R. S. Samuel, V. Chithambaram, Raja Raghavan, S. Janarthanan","doi":"10.15251/jor.2023.191.43","DOIUrl":"https://doi.org/10.15251/jor.2023.191.43","url":null,"abstract":"From the raw materials L-Serine and oxalic acid, the product Bis-LSeriniumoxalatedehydrate(BLSOD) was created. By using a slow evaporation process, the individual BLSOD crystals were produced from aqueous solution. According to single crystal X-ray Diffraction investigations, the structure of the produced crystal is monoclinic. The existence of different functional groups and the chemical environment present in the synthesised material were qualitatively determined through the use of Fourier Transform Infra-Red (FTIR) and proton nuclear magnetic resonance (H1NMR) spectrum studies. The crystal's transparency in the visible and near-infra-red areas was confirmed by UV-Visible-Near infrared and photoluminescence spectrum tests, which also looked at the material's viability for device construction. To determine the crystal's machinability, the mechanical properties of the material were carefully examined using Vicker's hardness research. Thermal investigations such as Thermo gravimetric (TGA) and Differential thermal analysis (DTA) have shown the thermal stability of BLSOD and the phases of weight losses. As a function of frequency and temperature, the dielectric constant and dielectric loss of grown crystals were determined. The Kurtz-Perry powder test was used to check both the second harmonic generation (SHG) and then the NLO property of the material.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45446174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and characterization of ferrous manganese thin films for magnetic storage devices 磁存储器件用锰铁薄膜的制备与表征
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2023-01-01 DOI: 10.15251/jor.2023.191.73
A. Poongodi, N. Thangaraj, M. Sudha
{"title":"Preparation and characterization of ferrous manganese thin films for magnetic storage devices","authors":"A. Poongodi, N. Thangaraj, M. Sudha","doi":"10.15251/jor.2023.191.73","DOIUrl":"https://doi.org/10.15251/jor.2023.191.73","url":null,"abstract":"The nanocrystalline nature of Ferrous Manganese (Fe-Mn) thin film coatings was obtained from sulphate baths at different current densities on the copper substrate. The effects of current density on structure, surface morphology, elemental composition, magnetic properties, and mechanical properties of electrodeposited Fe-Mn magnetic films were studied. The structural and surface properties of Fe-Mn thin films were studied using an Xray Diffractometer (XRD) and Scanning Electron Microscopy (SEM). The chemical compositions of the deposited films were investigated using Energy Dispersive X-ray Spectroscopy (EDAX). The magnetic properties of the thin films were studied with the aid of a Vibrating Sample Magnetometer (VSM). The electrodeposited Fe-Mn films were found to be nanocrystalline in nature due to the increase in current density. The deposits of Fe-Mn thin films were found to have a crack-free and smooth surface at low current densities. The films have good adherence to the copper substrate.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46514522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanical, structural and optical properties of pristine and PVA capped zinc oxide nanocomposites 原始和PVA包覆的氧化锌纳米复合材料的机械、结构和光学性能
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2023-01-01 DOI: 10.15251/jor.2023.191.23
P. Gopinath, P. Suresh, V. Jeevanantham
{"title":"Mechanical, structural and optical properties of pristine and PVA capped zinc oxide nanocomposites","authors":"P. Gopinath, P. Suresh, V. Jeevanantham","doi":"10.15251/jor.2023.191.23","DOIUrl":"https://doi.org/10.15251/jor.2023.191.23","url":null,"abstract":"Zinc oxide (ZnO) and Poly vinyl alcohol capped zinc oxide (PVA-ZnO) of different concentrations were synthesized by precipitation method. PVA capped ZnO nanoparticles were examined to study the influence of ZnO nanoparticles on PVA as it possesses various properties such as mechanical, structural and optical. The synthesized nanoparticles were analyzed using XRD, FTIR, UV-Vis, SEM EDAX techniques. In the FTIR spectrum, the peak observed at 559 cm−1 indicates M–O stretching in the samples which specifies the interaction of ZnO with PVA matrix. The XRD patterns confirmed the presence of ZnO nanoparticles and the size of the ZnO nanoparticles and PVA- ZnO NPs were 76 nm and 61 nm. The uniform dispersion of ZnO nanoparticles as well as the interaction of nanoparticles with the PVA matrix were also observed in SEM analysis and the purity of NPs was determined from EDS analysis. The UV-vis spectra show the light absorption behavior of the ZnO NPs and ZnO-PVA nanocomposites and they exhibited high absorption in the UV region. The mechanical properties such as tensile strength and elongation were also analyzed for the synthesized samples.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41343935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effect of thickness on the physical characterization of sprayed ZnO thin films 厚度对喷涂ZnO薄膜物理特性的影响
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2023-01-01 DOI: 10.15251/jor.2023.193.275
H. Saleh, J. M. Hussein, D. E. Alkateb, N. Habubi, F. S. Ahmed, S. Chiad
{"title":"Effect of thickness on the physical characterization of sprayed ZnO thin films","authors":"H. Saleh, J. M. Hussein, D. E. Alkateb, N. Habubi, F. S. Ahmed, S. Chiad","doi":"10.15251/jor.2023.193.275","DOIUrl":"https://doi.org/10.15251/jor.2023.193.275","url":null,"abstract":"ZnO thin films having different thicknesses (300, 400 and 500) nm were deposited by spray pyrolysis method (SPM). XRD analysis indicate that the deposited films have hexagonal wurtzite structure and display a strong peak at (002) plane. The effects of thicknesses on crystallite size, stress and strain are investigated. The thicknesses effect on film surface topography parameters such as roughness, particle size and Root mean square of grains are calculated. Atomic Force Microscopy (AFM) confirm that the distribution grains size appears nanostructure and homogeneous in all films. RMS increases from 1.54 nm to 3.98 nm with thicknesses 500 nm. The surface roughness increases from 1.33 nm to 3.30 nm. Transmittance was detecting to be atop 80% in visible region. The bandgap energy increased from 2.83 eV to 3.75 eV with thickness elevation.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67048196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magento optical properties and structure of tellurite glasses modified by alkaline ions 碱性离子改性碲酸盐玻璃的Magento光学性质和结构
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2022-12-20 DOI: 10.15251/jor.2022.186.805
A. M. Al-Syadi, M. Alfarh, H. Algarni, M. Alqahtani, M. Reben, H. Afifi, E. Yousef
{"title":"Magento optical properties and structure of tellurite glasses modified by alkaline ions","authors":"A. M. Al-Syadi, M. Alfarh, H. Algarni, M. Alqahtani, M. Reben, H. Afifi, E. Yousef","doi":"10.15251/jor.2022.186.805","DOIUrl":"https://doi.org/10.15251/jor.2022.186.805","url":null,"abstract":"In this paper we prepared glasses with composition (75-x)TeO2–5Nb2O5–20ZnO–xNa2O mol%, (x = 7, 10, 15, and 18) were synthesized by using the conventional quench-melting method. The Faraday effect has been investigated as well as the structure of these glasses was analyzed by Raman spectroscopy. It can observe that when the Na2O concentration increased from 7 to 18 mol%, the value of the Verdet constant decreased from 0.113 to 0.071 min/G.cm. This result can be interpreted as the following: when adding Na2O into the glass matrix, leads to the attendance of non-bridging oxygens (NBO). The peak (d) in the range of 717–721 cm−1 is related to the stretching vibrations of Te˗O˗ and Te=O bonds containing nonbridging oxygen in TeO3 (tp) phase.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46658488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A first-principles investigation into the electronic characteristics of phase changes in ZnO at high pressures ZnO高压相变电子特性的第一性原理研究
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2022-12-20 DOI: 10.15251/jor.2022.186.797
Y. Benkrima, M. E. Soudani, D. Belfennache, H. Bouguettaia, A. Souigat
{"title":"A first-principles investigation into the electronic characteristics of phase changes in ZnO at high pressures","authors":"Y. Benkrima, M. E. Soudani, D. Belfennache, H. Bouguettaia, A. Souigat","doi":"10.15251/jor.2022.186.797","DOIUrl":"https://doi.org/10.15251/jor.2022.186.797","url":null,"abstract":"The current study focuses on the effect of pressure on zinc oxide, ZnO, which is considered an essential element in several fields. In this research, the method of calculation has been used from the commencement to find the ZnO compound's structural and electrical characteristics at various pressure levels. It is found that the obtained results related to the crystal structure of the compound with phase (B4) Wurtzite agree well with previous theoretical and experimental findings. In addition, the electronic properties showed that ZnO has a direct gap of 0.68 eV, and the density of states showed that the3d position of the zinc atom significantly contributed to building the density of the electronic states of the compound, followed by the P-terminal of the oxygen atom. As it became clear to us that changing the pressure applied to the oxide ZnO increases the value of its energy gap, while the pressure value of 13.38 GPa is the crystal transition point from phase (B4) to (B1).","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43386335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrical characteristics and conductive mechanisms of AlN-based memristive devices AlN基忆阻器件的电学特性和导电机理
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2022-12-20 DOI: 10.15251/jor.2022.186.815
J. Wen, W. Hua, Q. Gong, B. Wang
{"title":"Electrical characteristics and conductive mechanisms of AlN-based memristive devices","authors":"J. Wen, W. Hua, Q. Gong, B. Wang","doi":"10.15251/jor.2022.186.815","DOIUrl":"https://doi.org/10.15251/jor.2022.186.815","url":null,"abstract":"Aluminum nitride (AlN) memristive devices have attracted a great deal of attention because of their compatibility with the CMOS fabrication technology, and more likely to be extended to power electronic devices. However, the conductive mechanism and the variability of resistance switching (RS) parameters are major issues for commercial applications. In this paper, we have obtained electrical characteristics of the Al/AlN/Pt memristors under the current compliance limits of 1 𝜇𝜇𝜇𝜇 and 10 𝜇𝜇𝜇𝜇, respectively. Furthermore, the statistics of switching parameters has been done in the Set and Reset processes. Finally, a quantum point contact model has been developed to account for conducting mechanisms and shows the evolution of the conductive filament during RS transitions.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43493161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural, elastic, optical and thermodynamic properties of CdGeP2 from theoretical prediction 理论预测CdGeP2的结构、弹性、光学和热力学性质
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2022-12-20 DOI: 10.15251/jor.2022.186.781
S. R. Zhang, Z. Zhu, H. Hou, L. Xie
{"title":"Structural, elastic, optical and thermodynamic properties of CdGeP2 from theoretical prediction","authors":"S. R. Zhang, Z. Zhu, H. Hou, L. Xie","doi":"10.15251/jor.2022.186.781","DOIUrl":"https://doi.org/10.15251/jor.2022.186.781","url":null,"abstract":"We have studied the structural, elastic anisotropy, electronic properties and optical properties of CdGeP2 crystal by using first-principles method. The effect of pressure on the elastic constants of CdGeP2 was explored. The changes in the anisotropy of the CdGeP2 at different pressures were analyzed in detail by three-dimensional (3D) and 2D projections of bulk modulus and Young's modulus. The electronic properties, including the band structure, density of states, were investigated, and it turned out that CdGeP2 is a semiconductor. Furthermore, we analyze the dielectric function, refractive index, extinction coefficient, absorption coefficient, and electrical conductivity of CdGeP2 in detail. Finally, the influence laws of temperature and pressure on Debye temperature, heat capacity and Grüneisen parameter are obtained, respectively","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47273735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical modeling of p-i-n GaAs solar cell performance p-i-n-GaAs太阳能电池性能的数值模拟
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2022-11-30 DOI: 10.15251/jor.2022.186.769
E. Chahid
{"title":"Numerical modeling of p-i-n GaAs solar cell performance","authors":"E. Chahid","doi":"10.15251/jor.2022.186.769","DOIUrl":"https://doi.org/10.15251/jor.2022.186.769","url":null,"abstract":"This study aims to improve and evaluate the external quantum efficiency (EQE) of p-i-n GaAs solar cells. The current densities of minority carriers and the geometrical and physical cell parameters were calculated using the finite difference method. As a result, the EQE simulation findings are extremely close to the experimental data, and a maximum EQE of 57.26 %, with optimum layer thicknesses (µm) of p, i, and n are respectively 0.2,1,4, and n and p layers doping (cm-3 ) of 1020 cm-3 and 4 × 1017 cm-3 . The adding of p+-AlGaAs window layer increases the energy conversion efficiency (%) from 19.41 to 25.45.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46522080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tuning structural and wettability properties of glass using ellipsoidal TiO2 nanoparticles 使用椭球型TiO2纳米颗粒调节玻璃的结构和润湿性
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2022-11-21 DOI: 10.15251/jor.2022.186.731
A. M. Machinin, A. Awang, C. Pien, S. K. Ghoshal
{"title":"Tuning structural and wettability properties of glass using ellipsoidal TiO2 nanoparticles","authors":"A. M. Machinin, A. Awang, C. Pien, S. K. Ghoshal","doi":"10.15251/jor.2022.186.731","DOIUrl":"https://doi.org/10.15251/jor.2022.186.731","url":null,"abstract":"Self-cleaning glasses became demanding for various advanced applications due to their manifold advantages. In this view, some tellurite glasses containing TiO2 nanoparticles with varying concentrations were synthesized using the standard melt-quenching. These glasses were transparent with a reddish appearance. The HRTEM images of the glasses showed the presence of ellipsoidal TiO2 NPs with sizes ranging from 9−22 nm and 5−9 nm along the major and minor axis, respectively. The lattice fringe pattern of the selected TiO2 NPs confirmed their anatase structure with a lattice spacing of 0.36 nm. The observed reduction in the water contact angle from 67.5° to 43.0° of the glasses indicated their hydrophilic nature. The high work of adhesion (0.101− 0.126 N.m-1 ) of the glasses revealed the strong interfacial attractive force between water and glass. It was demonstrated that by adjusting the TiO2 NPs contents the hydrophilic traits of the glassed can be tailored, indicating the suitability for self-cleaning applications.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43366535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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