Article
Chemistry, Physical
Kumud Choudhary, Richa Saini, Gaurav K. Upadhyay, L. P. Purohit
Summary: Yttrium doped ZnO:CdO nanocomposite thin films were prepared and studied for CO2 gas sensing. The YZC2 sample showed promising gas sensing performance and suitable for CO2 gas sensing application. Characterization of the films was conducted using XRD, FE-SEM, and UV-Vis spectroscopy to analyze their structural, surface, and optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Rina R. Tikare, Rohit R. Powar, Sharadchandra S. Patil, Dhanaji G. Kanase
Summary: Mixed metal oxides with different iron content (x = 0.2-1.0) were synthesized using sol-gel auto combustion process. The properties of the oxide materials were characterized using various techniques. The results showed that the replacement of aluminium ions affected the structure, bandgap, and crystallite size of the mixed metal oxides. The iron-substituted aluminate gas sensors exhibited good performance in detecting gases such as CO, H2S, and NO2.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Condensed Matter
Asif Hussain, Muhammad Khalid, Ali Dad Chandio, Muhammad Yasin, Nasir Abbas, M. G. B. Ashiq, Hind Albalawi, Kiran Naz, Muhammad Younas, Beenish Masud
Summary: Neodymium doped Ni-Mn based spinel ferrites nanomaterials were synthesized by sol gel auto-combustion method. The samples were annealed and characterized by XRD, SEM, and FTIR. The electrical and magnetic properties of these materials were also studied.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Physical
A. Pakalniskis, R. Skaudzius, D. V. Zhaludkevich, A. L. Zhaludkevich, D. O. Alikin, A. S. Abramov, T. Murauskas, V. Ya. Shur, A. A. Dronov, M. V. Silibin, A. Selskis, R. Ramanauskas, A. Lukowiak, W. Strek, D. V. Karpinsky, A. Kareiva
Summary: In this study, samarium substituted bismuth ferrite ceramics were prepared by sol-gel synthesis method and studied using various microscopic techniques to investigate the evolution of crystal structure across the morphotropic phase boundary region. The compounds exhibited structural transitions from polar active rhombohedral phase to anti-polar orthorhombic phase and then to non-polar orthorhombic phase within a specific concentration range. The results revealed a coexistence of different structural phases in the compounds, with a notable difference in the concentration range ascribed to the morphotropic phase boundary estimated by microscopic measurements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
Vijay Singh, Deepak Taikar, S. J. Dhoble
Summary: A series of Er3+-doped CaLa4Si(3)O(13) phosphors with varying doping concentration were synthesized using sol-gel technique. The prepared phosphors exhibit efficient green emission and fine color tuning capabilities in the green region. The PL study indicated their suitability for near UV excited LEDs, display appliances and related applications.
Article
Chemistry, Inorganic & Nuclear
Prathibha Vasudevan, Arun S. Prasad
Summary: Zinc oxide nanoparticles were successfully synthesized using sol-gel technique and Azadirachta indica leaves extract, with characterization done through various techniques to study their structure, size, morphology, and crystallite parameters. Optical properties investigation showed that these nanoparticles have potential for white luminescence applications.
JOURNAL OF CLUSTER SCIENCE
(2021)
Article
Materials Science, Ceramics
J. B. Shitole, S. N. Keshatti, S. M. Rathod, Santosh S. Jadhav
Summary: Rare earth Yttrium (Y3+) doped Ni-Cu nanoferrites were successfully prepared by sol gel route, exhibiting single phase cubic spinel structure. The crystallite sizes range from 51-84 nm, influencing the magnetic properties. The hysteresis loops and lattice parameters were used to study the magnetic and structural characteristics of the NCY ferrites. The dielectric behavior was governed by space charge polarization.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Rina R. Tikare, Rohit R. Powar, Vinayak G. Parale, Hyung-Ho Park, Tukaram J. Shinde, Dhanaji G. Kanase
Summary: The nanosphere decorated needle-like zinc-substituted aluminate samples (ZAN) were successfully synthesized by a sol-gel auto-combustion method, with their structural and morphological properties investigated through various analytical methods. The results showed that the ZAN sensor was sensitive and selective to H2S gas, and exhibited optimal response to H2S gas at 200 degrees Celsius.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
S. Simon, V. Simon
Summary: The effect of treatment temperature on the atomic environment in chromium doped lanthanum oxide synthesized by glycerol-assisted sol-gel route was investigated. Different phases were developed in the treated samples as temperature rises, leading to an increase in crystallite size and surface basicity, potentially enhancing catalytic activity. The X-ray diffraction, Fourier transform infrared, and X-ray photoelectron spectroscopy analyses were used to detect structural changes influencing sample properties.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Optics
Vijay Singh, Ch. B. Annapurna Devi, Sumandeep Kaur, A. S. Rao, Neelam Singh
Summary: A series of Er3+-doped Sr2La8(SiO4)6O2 phosphors were successfully synthesized via the sol-gel route in this study. The results suggest the potential utility of the prepared oxyapatite structured phosphors for photonic device applications, emitting green light.
Article
Materials Science, Ceramics
Meriem Boudiar, Faouzi Hanini, Abderrahmane Bouabellou, Yassine Bouachiba, Adel Taabouche, Driss Dergham, Chourouk Redjeb
Summary: Zn-doped TiO2 thin films with different weight percentages (0, 3, 7% wt.) were synthesized using the Sol-Gel method and deposited on glass substrates by the spin-coating process, followed by heat treatment at 500 ? for 90 min. The films were characterized using XRD, SEM, UV-vis transmittance spectroscopy, and m-lines spectroscopy. The results showed that increasing the zinc concentration inhibited crystal growth and led to significant microstructure changes in the TiO2 films. The films exhibited high transmittance and an optical band gap of approximately 3.6-3.51 eV. M-lines spectroscopy confirmed that the Zn: TiO2 planar waveguides supported single confined guided modes for both TE and TM polarizations. MLS measurements demonstrated that zinc doping increased the refractive index of the TiO2 thin films and enhanced their waveguiding properties, while reducing the birefringence with increasing concentrations up to 7 wt%.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Muhammad Burhanuddin, Muhammad Khalid, M. G. B. Ashiq, Hafsa Najam, Mohammed S. Alqahtani, Thamraa Alshahrani, Arshi Anwar, Aneeqah Sabah, M. Asadullah Nadir
Summary: In this study, a series of LaxBi2_xSn2O7/SnO2(8-Bi2O3) nanostructures were synthesized using sol-gel technique. The presence of hybrid phase metal oxides was confirmed by XRD analysis and TEM results. The formation of heterojunction with multifunctional pyrochlore increased the dielectric constant and quantum efficiency of the material. Electrical parameters such as AC conductivity, impedance, dielectric constant, electric modulus, and tangent loss were studied using an impedance analyzer meter. The relaxation mechanisms at different polarization stages in the applied frequency range were discussed. The appearance of relaxation peaks at different frequencies indicates that the prepared hybrid nanocomposites are suitable for energy storage devices across a wide range of frequencies.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Tomas Thor, Katerina Rubesova, Vit Jakes, Romana Kucerkova, Martin Nikl
Summary: Cu+-doped lithium aluminates with different stoichiometry were investigated. The gamma-LiAlO2 and alpha-LiAl5O8 samples exhibited different luminescent properties with Cu-doping. However, the beta-Li5AlO4 samples showed dual-phase structure and strong hygroscopicity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Optics
Vijay Singh, Venkata Krishnaiah Kummara, N. Ravi, Ji Bong Joo
Summary: Y2SiO5 nanophosphors doped with various Gd3+ ion concentrations were successfully synthesized using the citrate-based sol-gel method, and showed excellent characteristics in the studies.
Article
Biochemistry & Molecular Biology
Xiaoming Ding, Yanli Li, Yubo Zhang
Summary: This study focuses on fabricating VO2 films doped with different contents of tungsten (W) element on high-purity Si substrate. The films exhibited good crystallinity and uniform thickness. X-ray diffraction and X-ray photoelectron spectroscopy characterizations showed that W can be doped into the VO2 lattice, resulting in small lattice distortion. In situ FT-IR measurements revealed that the phase transition temperature of the films can be continuously decreased with increasing W doping content. The doping also significantly enhanced the film's conductivity and reduced optical transmittance. These findings provide important insights into designing doped VO2 films for silicon-based devices.
