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Journal of Metastable and Nanocrystalline Materials最新文献

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Transmission Electron Microscope Analysis of Polycrystalline Silicon for Thin Film Solar Cells 薄膜太阳能电池用多晶硅的透射电子显微镜分析
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-04-03 DOI: 10.4028/p-utzem4
R. Muhida, Muhammad Riza, Bambang Pratowo, Zein Muhamad, A. Cucus, Ari Kurniawan, Tia Tanjung, Taqwan Thamrin, A. Sutjipto, R. Muhida
{"title":"Transmission Electron Microscope Analysis of Polycrystalline Silicon for Thin Film Solar Cells","authors":"R. Muhida, Muhammad Riza, Bambang Pratowo, Zein Muhamad, A. Cucus, Ari Kurniawan, Tia Tanjung, Taqwan Thamrin, A. Sutjipto, R. Muhida","doi":"10.4028/p-utzem4","DOIUrl":"https://doi.org/10.4028/p-utzem4","url":null,"abstract":"This research uses a transmission electron microscopy (TEM) approach to analyze the deterioration of the crystallinity of poly-Si placed on the textured substrate. On the textured substrate, we created a poly-Si photovoltaic film with a RMS roughness, σ of 64 nm. Based on TEM findings, we discovered that growth collisions are present in the poly-Si photovoltaic layer that was deposited on the textured substrate with an RMS roughness, σ of 64 nm. The growth direction of the columnar-like grains tends to be perpendicular to the slant slope of the textured substrate. The diagonally oriented columnar growth collisions may be seen clearly at V-shaped formations in the textured substrate. There are also cavities and fissures that were created by the collisions. There are also cavities and fissures that were created by the collisions. The crystallinity of poly-Si grown above the V-shape structure has worsened, as compared to poly-Si grown above the Λ-shape structure, according to the TEM and SAED pictures.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"83 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140749589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Glows to Breakdown Characteristic of ZnO Crystal Growth Using Electric Current Heating Method 使用电流加热法生长氧化锌晶体的发光到击穿特性
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-04-03 DOI: 10.4028/p-m6bybw
A. Sutjipto, Masasuke Takata
{"title":"Glows to Breakdown Characteristic of ZnO Crystal Growth Using Electric Current Heating Method","authors":"A. Sutjipto, Masasuke Takata","doi":"10.4028/p-m6bybw","DOIUrl":"https://doi.org/10.4028/p-m6bybw","url":null,"abstract":"Zinc oxide (ZnO) crystals form are various applications could be created like in manufacturing ultraviolet laser and photodetectors. Zinc oxide (ZnO) crystals are synthesized by applying electric current on ZnO ceramic bar which are made using powder metallurgy method. By using Scanning Electron Microscope (SEM) and X-Ray Diffractometer (XRD) could be characterized of ZnO sintered bars easily. The different types of crystal are produced such as polygonal, broken stick, flowers, trunks and many more when applied the DC heating until the sample of ZnO will be glows and breaks apart. The loads or pressure and heating method to the sample of ZnO will be affected to the types of crystal growth. The optimum load is 3 metric tonne and will ease the ignition during DC heating due to less porosity of the samples.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"268 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140748911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Journal of Metastable and Nanocrystalline Materials Vol. 39 易变和纳米晶材料杂志》第 39 卷
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-04-03 DOI: 10.4028/b-j3kikk
A. Sutjipto, V. Adimule
{"title":"Journal of Metastable and Nanocrystalline Materials Vol. 39","authors":"A. Sutjipto, V. Adimule","doi":"10.4028/b-j3kikk","DOIUrl":"https://doi.org/10.4028/b-j3kikk","url":null,"abstract":"","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"11 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140747011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization of GO Added ZnO Crystal Growth Using Electric Current Heating Method 利用电流加热法表征添加了 GO 的氧化锌晶体生长
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-04-03 DOI: 10.4028/p-vcv6xc
A. Sutjipto, Ari Legowo
{"title":"Characterization of GO Added ZnO Crystal Growth Using Electric Current Heating Method","authors":"A. Sutjipto, Ari Legowo","doi":"10.4028/p-vcv6xc","DOIUrl":"https://doi.org/10.4028/p-vcv6xc","url":null,"abstract":"ZnO has attractive and great properties especially in the fields of photonics, electronics and optics and it is widely used in the manufacturing industry of photodetectors, laser diodes and gas detectors. Therefore, various methods have been carried out to produce ZnO crystals and one of them is the Electric Current Heating method. Electric Current Heating (ECH) method is a fabrication technique applied in researches to grow ZnO crystal on a ceramic bar. This method is preferred because of it is easy to operate in laboratory, low growth temperature and also low cost. In this research, by using powder metallurgy process, Graphene Oxide/GO (in various weight percentage) added into ZnO was pelletized in a compaction die with dimension of 14.95 mm x 30 mm x 40 mm and pressure of 4 bar. The pellet green body was then sintered at 1100 °C with rate 10.0 °C/min for 3 hours. The sintered GO added ZnO ceramic was cut into ceramic bar with dimensio of 13mm x 2mm x 2mm. ECH with current 3 A and applied voltage of 30 V was used to heat the ceramic bar to produce crystals. Under scanning electron observation, it was found different crystal-like structures for each percentage GO addition. UV-Vis measurement has shown that each crystal-like structure of a GO added ZnO has own degree of energy absorbsion because of different band gap. Addition GO into ZnO would increase band gap of pure ZnO.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"280 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140750013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low Temperature Chemical Synthesis and Investigation of Cadmium Substituted of Structural Properties of Cobalt Nano Ferrites 钴纳米铁氧体结构特性的镉替代物的低温化学合成与研究
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-04-03 DOI: 10.4028/p-sv7exq
P. Kashid, S. Mathad, Mahadev R. Shedam, Rakesh R. Shedam
{"title":"Low Temperature Chemical Synthesis and Investigation of Cadmium Substituted of Structural Properties of Cobalt Nano Ferrites","authors":"P. Kashid, S. Mathad, Mahadev R. Shedam, Rakesh R. Shedam","doi":"10.4028/p-sv7exq","DOIUrl":"https://doi.org/10.4028/p-sv7exq","url":null,"abstract":"This article presents, the systematic and successful preparation of cadmium substituted cobalt ferrite (Co1-xCdxFe2O4) nanoparticles via simple co-precipitation method. X-ray diffraction study confirmed the prepared ferrite nanoparticles were crystallized with a mono phase cubic spinel structure of Fd3m space group. The average crystallite size (Dxrd) was increased with Cd doping content, due to the replacement of Co2+ ions by Cd2+ ions. XRD pattern revealed the high intense peak corresponds to (311) lattice plane and confirmed the formation of cubic structure ferrite nanoparticles. Morphological study was done by using SEM images. The grain size found to be increased with Cd concentration and it reaches the highest of around 0.9μm for Co0.52Cd0.48Fe2O4 composition. Fourier Transform Infrared spectroscopy of prepared samples was recorded in the range of 1000-350 cm-1, confirmed the spinel structure.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"49 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140747561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cobalt, Copper and Magnesium Doped Nickel Zinc Nanoferrites by Solution-Combustion Method: Structural, Antibacterial and Antifungal Properties 溶液燃烧法掺杂钴、铜和镁的镍锌纳米铁氧体：结构、抗菌和抗真菌特性
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-04-03 DOI: 10.4028/p-zan6ns
G. Shweta, L. Naik, Rangappa B. Pujar, Shridhar N. Matad, D.M. Chetan, Sahebagouda Jambaladinni
{"title":"Cobalt, Copper and Magnesium Doped Nickel Zinc Nanoferrites by Solution-Combustion Method: Structural, Antibacterial and Antifungal Properties","authors":"G. Shweta, L. Naik, Rangappa B. Pujar, Shridhar N. Matad, D.M. Chetan, Sahebagouda Jambaladinni","doi":"10.4028/p-zan6ns","DOIUrl":"https://doi.org/10.4028/p-zan6ns","url":null,"abstract":"The nickel zinc nanoferrites with configurationNi0.45Zn0.55–xMxFe2O4were achieved where x = 0.0, 0.1, 0.2 and 0.3 and M = Cobalt, Copper, Magnesiumusing solution-combustion method by availing sucrose as a fuel. The procured nanoferrites were investigated forstructural properties using TEM, antibacterial and antifungal propertiesby Kirby-Bauer Disk Diffusion Susceptibility Test also calledas Agar diffusion method. The synthesized nanoferrites were tested for their antibacterial activities against Gram negative (Escherichiacoli) and Gram positive (Bacillus cerus) bacterial strains. Also, investigation was evaluated for their antifungal activity against Aspergillus niger. Against Bacillus cerus, sample Ni0.45 Zn0.45Cu0.1Fe2O4 showed maximum antibacterial activity. The maximum antifungal activity was observed for Ni0.45 Zn0.35Co0.2Fe2O4.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"158 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140748746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of Titanate Nanosheets from Indigenous Indonesian Ilmenite Minerals 从印度尼西亚本土钛铁矿矿物中合成钛酸盐纳米片
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-01-15 DOI: 10.4028/p-s4b1ob
Fakhri Akbar Maulana, A. H. Yuwono, N. Sofyan, D. Dhaneswara, L. H. Lalasari, S. Herbirowo
{"title":"Synthesis of Titanate Nanosheets from Indigenous Indonesian Ilmenite Minerals","authors":"Fakhri Akbar Maulana, A. H. Yuwono, N. Sofyan, D. Dhaneswara, L. H. Lalasari, S. Herbirowo","doi":"10.4028/p-s4b1ob","DOIUrl":"https://doi.org/10.4028/p-s4b1ob","url":null,"abstract":"Titanate nanosheets are a type of 2-dimensional nanomaterial with vast applications in electronics, energy storage, and photocatalysis due to their superior properties, such as their large specific surface area and excellent electrical conductivity. Titanate nanosheets are expected to be the material precursor of TiO2 nanostructures with further treatment. The current research aims to synthesize titanate nanosheets using the natural mineral ilmenite from Indonesia through the hydrothermal method. X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunaeur-Emmett-Teller (BET) analysis were used to characterize the chemical composition, crystal structure, shape, size, and specific surface area of the prepared samples. The structure phase of the as-synthesized sample is known to be layered titanate. The as-synthesized nanosheet sample has a diameter ranging from 2.5 to 4 μm and BET surface areas of approximately 40 m2/g. This concise hydrothermal method could create 2-dimensional structured nanomaterials from Indonesian local minerals.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139622062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Anodizing Voltage and Tobacco Extract Addition on the Structure of Porous Anodic Aluminum Oxide (PAAO) Layer 阳极氧化电压和烟草提取物添加量对多孔阳极氧化铝（PAAO）层结构的影响
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-01-15 DOI: 10.4028/p-0vrmiv
Akhmad Zein Eko Mustofa, D. R. Adhika, A. Ramelan, Susana Susana
{"title":"Effect of Anodizing Voltage and Tobacco Extract Addition on the Structure of Porous Anodic Aluminum Oxide (PAAO) Layer","authors":"Akhmad Zein Eko Mustofa, D. R. Adhika, A. Ramelan, Susana Susana","doi":"10.4028/p-0vrmiv","DOIUrl":"https://doi.org/10.4028/p-0vrmiv","url":null,"abstract":"Porous Anodic Aluminum oxide (PAAO) is a porous oxide layer resulting from anodization. The structure of PAAO is influenced by anodization parameters, i.e., voltage and electrolyte composition. Increasing anodization voltage can affect the process of pore formation and oxide growth during anodization. Adding additives such as ethanol, propanol, and polyethylene glycol (PEG) can increase pore regularity and affect the structure of PAAO. In this study, tobacco extract (TE) was added to the oxalic acid-based anodizing solution. TE has many active compounds that may affect pore formation and oxide growth. Morphological analysis shows decreased pore diameter when adding tobacco extracts with concentrations of 0, 0.1, and 0.5 g/L, namely 43.92, 41.42, and 37.8 nm at anodization voltage 40 V. In anodization with a voltage of 60 V, a decrease in pore diameter was obtained with 46.47, 34.24, and 26.8 nm for adding tobacco extract 0, 0.1, and 0.5 g/L. The thickness of PAAO increases from 6.45 µm to 16.87 µm with increasing anodization voltage and tobacco extract concentration. The increase of tobacco extract concentration can lead to the decrease of the XRD peak intensity, where the sequence of the most significant decrease was observed for the peaks of (111), (220), (200), and (311), respectively. A decrease in the intensity ratio of (111) and (220) AAO peaks indicates the influence of tobacco extract on the anodization process. Further thermal analysis by Thermo-gravimetric (TG) shows an increase in mass loss from 1.47 to 5.37% with increasing tobacco extract concentration from 0 g/L to 0.5 g/L. TG results indicate the incorporation of tobacco extract in the inner pore wall.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"1 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139529893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single-Domain Hard Ferromagnetic M-SrFe Nanoparticles for Magnetic Data Storage 用于磁性数据存储的单域硬铁磁性 M-SrFe 纳米粒子
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-01-15 DOI: 10.4028/p-p4yecv
S. Rani, S. Radhika, C.M. Padma
{"title":"Single-Domain Hard Ferromagnetic M-SrFe Nanoparticles for Magnetic Data Storage","authors":"S. Rani, S. Radhika, C.M. Padma","doi":"10.4028/p-p4yecv","DOIUrl":"https://doi.org/10.4028/p-p4yecv","url":null,"abstract":"Single-domain M-type Strontium Ferrite nanoparticles are prepared by the co-precipitation method. The crystallite size of the M-SrFe Nps is 58.1 nm, as determined by the XRD pattern. The SEM micrographs reveal the hexagonal morphology. M-SrFe Nps is depicted in EDS analysis. According to VSM characterization, the sample is a hard magnetic material with high coercivity. With its outstanding magnetic characteristics, hexaferrite is typically employed in permanent magnetic materials and recording devices. The band gap energy is determined to be 1.95 eV from the UV-DRS reflectance data using the Kubelka-Munk plot. The absorbed wavelength with the highest intensity peak in PL analysis is 629.9 nm. The TG-DTA investigations support the remarkable thermal stability of M-SrFe Nps. The resistivity of the sample, 0.312 Ωm is calculated using the four-probe method.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"17 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139529336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigations of Crystal Structure and Magnetic Properties of Mn0.3Fe2.7O4/PEO/PMMA/AC Nanocomposites Mn0.3Fe2.7O4/PEO/PMMA/AC 纳米复合材料的晶体结构和磁性能研究
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-01-15 DOI: 10.4028/p-gd91fx
A. S. H. Wahyuni, S. Sunaryono, N. M. Chusna, H. Wisodo, Anugrah Pratama Supriyono, N. Mufti, A. Taufiq
{"title":"Investigations of Crystal Structure and Magnetic Properties of Mn0.3Fe2.7O4/PEO/PMMA/AC Nanocomposites","authors":"A. S. H. Wahyuni, S. Sunaryono, N. M. Chusna, H. Wisodo, Anugrah Pratama Supriyono, N. Mufti, A. Taufiq","doi":"10.4028/p-gd91fx","DOIUrl":"https://doi.org/10.4028/p-gd91fx","url":null,"abstract":"The Mn0.3Fe2.7O4/PEO/PMMA/AC nanocomposites were synthesized using co-precipitation and solid-state reaction methods. The Mn0.3Fe2.7O4/PEO/PMMA/AC nanocomposites were success formed. This was confirmed by characterization using FTIR instrument. The Fe-O, C-O, and C-H2 functional groups were the representation of Mn0.3Fe2.7O4, PEO/PMMA, and AC respectively. Investigation of crystal structure was characterized using XRD instrument. According to X-Ray Diffraction analysis, the crystal size was 10.82 nanometers and the peak of AC was detected on 2θ around 24.85o. In addition, the investigation of magnetic properties was characterized using VSM instrument. This result showed that the Mn0.3Fe2.7O4/PEO/PMMA/AC nanocomposites behave as a superparamagnetic material with a saturation magnetization value was around 12.55 emu/gram.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"124 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139622560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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