Journal of Ovonic Research最新文献_第2页

Visible light photo catalytic and optical property evolution of combustion method prepared copper doped nickel ferrite nanoparticles 可见光光催化及燃烧法制备掺铜镍铁氧体纳米颗粒的光学性质演化

4区材料科学

Journal of Ovonic Research Pub Date : 2023-09-20 DOI: 10.15251/jor.2023.195.525

R. Jothiramalingam, H. Al-Lohedan, A. Karami

{"title":"Visible light photo catalytic and optical property evolution of combustion method prepared copper doped nickel ferrite nanoparticles","authors":"R. Jothiramalingam, H. Al-Lohedan, A. Karami","doi":"10.15251/jor.2023.195.525","DOIUrl":"https://doi.org/10.15251/jor.2023.195.525","url":null,"abstract":"By using a simple microwave combustion technique, copper-doped NiFe2O4 spinel nanoparticles were formed. The XRD patterns demonstrated that Cu doping into NiFe2O4 spinel resulted in the creation of α-Fe2O3 secondary phase in addition to the cubic structure that already existed. Using SEM, morphological investigations revealed irregular shapes and severely agglomerated different grain boundaries. In an optical analysis, it was discovered that the band gap narrowed as the Cu2+ doping percentage raised. The octahedral site (Ni-O) and tetrahedral site (Fe-O) stretching modes of the Cu-doped nanoparticle structure were linked to bands at 548, 514, and 649cm-1 from FT-IR analysis. Cu-doped nanoparticles were examined for their enhanced photocatalytic degradation of RhB in visible light irradiation under atmosphere condition. The performance of pure NiFe2O4 as a photocatalyst was discovered to be greatly impacted by the Cu-doping. Additionally, the photo-catalytic effect was optimized (efficiency rose from 88.26 percent, x = 0-99.85 percent, x = 0.4) with the rise of Cu-doping into x=0.4. An in-depth discussion was had on the potential photocatalytic mechanism. The simultaneous improvement of photocatalytic activities serves as proof that Cu-doped NiFe2O4 spinel nanoparticles will perform well in multifunctional photochromic devices in future.","PeriodicalId":49156,"journal":{"name":"Journal of Ovonic Research","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136375204","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

Studying the effect partial Ni2O3 nano-particles compensation on the properties of the compound Bi2Sr2-xYxCa2Cu3-yNiyO10+δ superconductors 研究部分Ni2O3纳米粒子补偿对化合物Bi2Sr2-xYxCa2Cu3-yNiyO10+δ超导体性能的影响

4区材料科学

Journal of Ovonic Research Pub Date : 2023-09-20 DOI: 10.15251/jor.2023.194.463

N. A. Ahmad, A. D. Ali, S. H. Mahdi

引用次数: 0

The size dependence and defect induced room temperature ferromagnetism of ZnO and Zn 1-x-y AlxZyO (Z=Mg/Ni) nanocomposites ZnO和zn1 -x-y AlxZyO (Z=Mg/Ni)纳米复合材料的尺寸依赖性和缺陷诱导的室温铁磁性

4区材料科学

Journal of Ovonic Research Pub Date : 2023-09-20 DOI: 10.15251/jor.2023.195.493

R. Anithadevi, J. Kalpana, D. Shanthi, C. Ravichandran

{"title":"The size dependence and defect induced room temperature ferromagnetism of ZnO and Zn 1-x-y AlxZyO (Z=Mg/Ni) nanocomposites","authors":"R. Anithadevi, J. Kalpana, D. Shanthi, C. Ravichandran","doi":"10.15251/jor.2023.195.493","DOIUrl":"https://doi.org/10.15251/jor.2023.195.493","url":null,"abstract":"In the current research, Al-Mg-ZnO and Al-Ni-ZnO nanocomposites were synthesized by using simple soft chemical route. Prepared nanocomposites of Al-Mg-ZnO and Al-Ni-ZnO with capsule shape distributed magnetite nanostructured were carried out under the calcinated at 120 C for 12 h in furnace. The structural morphology and characterization analysis of as prepared nanocomposites was analyzed by XRD, UV–vis. FTIR, PL, TEM, VSM studies. XRD analysis confirmed the highly pure crystallized cubic phases. The XRD peaks show that the crystalline sizes are of the order of 22 nm, 19 nm, and 11nm. Magnetic property of the prepared nanocomposites was discussed in room temperature using VSM measurement. In spite of a number of researchers reporting the effect of codoping ZnO nanoparticles (NPs) with two different metals was modify the properties of the entire system such as enrich in room-temperature ferromagnetism. In this research we tried to by experimentally observed the magnetic properties of a series of soft chemical synthesized Zn1-x-yAlxZyO (Z=Mg/Ni) nanocomposites. Interestingly, it was found that in comparison to un-doped ZnO NPs and co-doped with two different metals. The ferromagnetic signal changes in a co-doped system in which one of the Mg/Ni ions increases the concentration of defects mechanism when Mg/Ni ions exhibited only one oxidation state. The potential role of charge transfer ferromagnetism is involving Mg2+ and Ni2+ ions substituted into ZnO lattice, The origin of magnetism in the nanocomposites is due to exchange interaction between local spin polarized electrons and the conduction electrons. The potential role of charge transfer ferromagnetism involving mixed valence ions and effects defect mechanism was used to explain the room temperature ferromagnetism.","PeriodicalId":49156,"journal":{"name":"Journal of Ovonic Research","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136375211","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

Effect of C ion irradiation on AlGaAs/InGaAs HEMT C离子辐照对AlGaAs/InGaAs HEMT的影响

4区材料科学

Journal of Ovonic Research Pub Date : 2023-09-20 DOI: 10.15251/jor.2023.195.483

H. L. Wang, S. X. Sun, H. Y. Mei, Y. T. Gao

引用次数: 0

Exploring the impact of Bi2O3 addition on the thermal properties and crystallization behavior of lead borosilicate glasses 探讨Bi2O3添加量对硼硅酸盐铅玻璃热性能和结晶行为的影响

4区材料科学

Journal of Ovonic Research Pub Date : 2023-09-20 DOI: 10.15251/jor.2023.194.471

Yu. S. Hordieiev, A. V. Zaichuk

{"title":"Exploring the impact of Bi2O3 addition on the thermal properties and crystallization behavior of lead borosilicate glasses","authors":"Yu. S. Hordieiev, A. V. Zaichuk","doi":"10.15251/jor.2023.194.471","DOIUrl":"https://doi.org/10.15251/jor.2023.194.471","url":null,"abstract":"Novel heavy-metal oxide glasses with different compositions, specifically (80-x)PbO– xBi2O3–10B2O3–10SiO2, where x ranges from 0 to 60 mol%, were synthesized using a conventional melt-quenching technique. The amorphous nature of these glasses was confirmed through X-ray diffraction analysis. Additionally, infrared spectra were obtained for the prepared samples to explore their structural characteristics. Differential thermal analysis was performed to investigate the characteristic temperatures of the glasses, including the glass transition temperature, melting temperature, onset crystallization temperature, and peak crystallization temperature. The addition of Bi2O3 shifts the characteristic temperatures to higher values and affects the crystallization process and phases formed. Parameters like ΔT, KH, and KSP are used to evaluate and quantify glass stability. Dilatometric measurements demonstrated that substituting PbO with Bi2O3 in the glass composition resulted in an increase in glass transition temperature and dilatometric softening temperature, as well as a decrease in the coefficient of thermal expansion. Furthermore, we determined the density and calculated the molar volume of the samples. These findings deepen our understanding of the thermal behavior, glass stability, and structure-property relationships in lead borosilicate glasses with Bi2O3, facilitating the development and customization of glass compositions with desired thermal and physical characteristics for specific applications.","PeriodicalId":49156,"journal":{"name":"Journal of Ovonic Research","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136375219","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

Characterization of zinc oxide nano particles synthesized via chemical and green method 化学法和绿色法合成氧化锌纳米颗粒的表征

4区材料科学

Journal of Ovonic Research Pub Date : 2023-09-20 DOI: 10.15251/jor.2023.195.505

S. N. Begum, R. Kumuthini

引用次数: 0

Investigation on the physical properties of Ni doped SrTiO3 by first-principle calculations 用第一性原理计算研究Ni掺杂SrTiO3的物理性质

4区材料科学

Journal of Ovonic Research Pub Date : 2023-09-20 DOI: 10.15251/jor.2023.195.513

M. M. Hameed, S. A. Aldaghfag, M. Saeed, M. Yaseen, S Saleem, None Nasarullah

引用次数: 0