Article
Engineering, Electrical & Electronic
Hafiz Muhammad Ahsan, Kanhya Lal, Murtaza Saleem, Ghulam M. Mustafa, Muhammad Ahmad Khan, Ahmed S. Haidyrah, Shahid Atiq
Summary: The synthesis of pure ZnO with nominal Mn and Co co-doping was conducted using a cost-effective wet chemical route to explore their dielectric response. Structural and morphological analysis showed the influence of Mn and Co doping on crystal structure and particle morphology in ZnO. The higher dielectric constant observed was attributed to the presence of oxygen vacancies generated during the process.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
N. H. Alonizan
Summary: Pure and Al-doped ZnO nanoparticles were synthesized using hydrothermal technique. The structural and phase analysis showed that Al doping increased the crystallite size and caused compressive stress formation in the material network. Other studies investigated the impact of different Al doping ratios on powder morphology, optical bandgap, and electronic defects localized in the material band-gap.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Multidisciplinary
Anamika Kem, Mohd Rehan Ansari, P. Prathap, M. Jayasimhadri, Koteswara Rao Peta
Summary: Eco-friendly stable ZnO nanoparticles were successfully synthesized using citrus limon as a chelating agent. The structural and optical properties of the nanoparticles were studied at different annealing temperatures. The results showed that the particle size increased due to agglomeration or Ostwald ripening at high temperature, and the crystallite size and bandgap also increased slightly. The emission peaks of the nanoparticles were analyzed and attributed to the near band edge emission and the transition of electrons from traps to the valence band.
Article
Engineering, Electrical & Electronic
Mekonnen Tefera Kebede, Sheela Devi, Babita Tripathi, Sunil Chauhan, Venus Dillu
Summary: In this study, Bi1-xCexFe1-xNixO3 (x = 0%, 4%, 6% and 8%) samples were synthesized using sol-gel method. The influence of Ce-Ni co-doping on the structural, vibrational, magnetic, optical and photocatalytic properties of the samples was systematically investigated. The results showed that Ce-Ni co-doping improved the ferromagnetic and photocatalytic properties of BiFeO3, and also enhanced the crystallinity of the samples.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Polymer Science
M. A. Bouacheria, A. Djelloul, M. Adnane, Y. Larbah, L. Benharrat
Summary: ZnO and AZO thin films were prepared on glass substrates with different Al concentrations, showing changes in crystallite size and optical properties with increasing Al doping. The film doped with 1 at.% Al exhibited high emission intensity and potential for solar cell applications.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Anchal Sharma, Puneet Negi, Ruhit Jyoti Konwar, Hemaunt Kumar, Yogita Verma, Shailja, Prakash Chandra Sati, Bhargav Rajyaguru, Himanshu Dadhich, N. A. Shah, P. S. Solanki
Summary: Pure and doped derivatives of TiO2 with nitrogen and cobalt as dopants were synthesized using auto-combustion sol-gel technique. The doping effects on the structural, optical, and electrical properties were investigated. The results showed that doping can tune the band gap of TiO2, making it suitable for photocatalytic and photovoltaic applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
M. Rocha, Francisca P. Araujo, S. Castro-Lopes, Idglan S. de Lima, Edson Cavalcanti Silva-Filho, Josy Anteveli Osajima, Carla S. Oliveira, Bartolomeu C. Viana, Luciano C. Almeida, Y. Guerra, R. Pena-Garcia
Summary: In this study, the influence of Fe and Pr addition on the structural, optical, and antibacterial properties of spherical ZnO nanoparticles synthesized via sol gel method was investigated. The lattice constants values increased while the average crystallite size decreased with varying Pr concentration. Raman and FTIR spectroscopies confirmed the single-phase formation of ZnO and the presence of oxygen vacancies. The samples exhibited agglomerated spherical morphology and the textural properties were affected by the inclusion of Fe. The synthesized materials showed promising antimicrobial activity against Escherichia coli and Staphylococcus aureus due to nanomaterial-bacteria interactions.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
P. Harshapriya, Deepak Basandrai, Pawandeep Kaur
Summary: The sol-gel technique was used to prepare pure and Y-Ag-doped multiferroic bismuth ferrite nanoparticles. The structural, morphological, magnetic, and microwave absorption properties of the doped nanoparticles were examined. The Y-Ag-doped nanoparticles showed improved band gaps, saturation magnetizations, and EMI shielding effectiveness compared to the pure nanoparticles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Ceramics
Beata Pecusova, Anna Prnova, Jana Valuchova, Milan Parchoviansky, Robert Klement, Dusan Galusek
Summary: The ytterbium-aluminate microspheres with ytterbium-aluminium garnet composition doped by different amounts of Er2O3 were prepared. The prepared systems were mostly X-ray amorphous with the presence of traces of ytterbium-aluminium garnet phase and ytterbium oxide. The thermal analysis showed crystallization of the prepared systems in the temperature range of 914-984 degrees C.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Mansour Mohamed, A. Sedky, Abdullah S. Alshammari, Z. R. Khan, M. Bouzidi, M. Gandouzi
Summary: The structural, optical, and photocatalytic properties of Zn1-xBixO samples (0.00 < x < 0.20) were investigated. Increasing the Bi content to 0.20 led to an increase in the a-parameter, unit cell volume, crystallite size, and porosity, while the c-parameter decreased. Adding Bi to ZnO increased the Young and bulk modulus, and all samples exhibited brittleness. Optical analysis showed that all Zn1-xBixO samples had two direct band gaps (Eg1/Eg2), with values decreasing up to 0.10 Bi content and then increasing up to 0.20 Bi. Introducing Bi3+ ions increased the reflective index of ZnO. Photocatalytic activity was reduced by 0.025 Bi doping but enhanced by increasing the Bi content to 0.20. These findings suggest that Zn1-xBixO nanoparticles are more suitable for optoelectronic devices and water purification.
Article
Materials Science, Multidisciplinary
Syed Zia Hussain Hashmi, Muhammad Khalid, Ghulam Mustafa, Muhammad Gul Bahar Ashiq, Muhammad Younas, Ahsan Quddus, Hisham S. M. Abd-Rabboh, Thamraa Alshahrani, Kiran Naz, M. Mohamed Javid
Summary: The Solution-gelation self-ignition method was used to synthesize Nickel-doped Magnesium ferrite (MgFe2O4) nanoparticles with tunable dielectric and magnetic properties. The effect of nickel on crystal structure, crystallite size, dielectric properties, and magnetic properties was investigated. Various characterization techniques were employed, including XRD, FTIR, TEM, and VSM, to analyze the structure, size, and properties of the synthesized nanoparticles. The dielectric studies suggested potential applications of the Mg1-xNix-Fe2O4 nanoparticles in microwave devices.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Ceramics
S. Divyalakshmi, I. B. Shameem Banu, R. Rajesh
Summary: The study investigates the influence of oxygen octahedra distortion on the magnetic and magnetoelectric properties of Bi1-xErxFe1-yZryO3 (x = 0, .05, .1, y = .02, .05) polycrystalline nanoparticles synthesized by sol-gel route. The doping of Er (via Bi site) and Zr (via Fe site) ions in BiFeO3 results in variations in the Fe-O-Fe bond angle, tilt angle of oxygen octahedra, and canting angle of spiral spin arrangement. This leads to changes in the magnetization, number of electrons per unit cell, coherently diffracting domains, and magnetoelectric coupling coefficient. Among the samples, Bi0.95Er0.05Fe0.98Zr0.02O3 exhibits enhanced magnetic and magnetoelectric behaviors.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
H. Layoul, F. Meriche, Y. Bouznit, A. Boukerika
Summary: Al-doped zinc oxide (AZO) thin films were found to have smooth and uniform surfaces, with decreasing grain size as Al content increased. They exhibited high optical transparency in the visible region, and the optical band gap increased with Al content. The best performing films were obtained with 2 at. % of Al doping.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Characterization & Testing
Nihat Demirbilek, Fahrettin Yakuphanoglu, Mehmet Kaya
Summary: In this study, nano-structured semiconductor thin films and p-type Si photodiodes were fabricated using the sol-gel spin coating technique with pure ZnO and co-doped ZnO:Al-x:Cu-y. The structural, optical, and electrical properties of the thin films and photodiodes were investigated, revealing promising rectifying and photosensitive behaviors that suggest potential applications in optoelectronic circuits and electronic devices.
Article
Materials Science, Ceramics
P. Sathish, N. Dineshbabu, K. Ravichandran, T. Arun, P. Karuppasamy, M. SenthilPandian, P. Ramasamy
Summary: The structural, optical, surface morphological, and antibacterial properties of undoped and Ga-doped ZnO nanoparticles prepared by a combustion method were explored. Ga doping was found to significantly enhance the antibacterial activity of ZnO nanoparticles.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
A. N. Mallika, A. Ramachandra Reddy, K. Sowribabu, K. Venugopal Reddy
CERAMICS INTERNATIONAL
(2015)
Article
Engineering, Electrical & Electronic
A. N. Mallika, A. Ramachandra Reddy, K. Venugopal Reddy
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2016)
Article
Materials Science, Ceramics
A. N. Mallika, A. Ramachandra Reddy, K. Venugopal Reddy
JOURNAL OF ADVANCED CERAMICS
(2015)
Article
Materials Science, Multidisciplinary
K. Sowri Babu, A. Ramachandra Reddy, Ch. Sujatha, K. V. G. Reddy, A. N. Mallika
Article
Engineering, Electrical & Electronic
K. Sowri Babu, A. Ramachandra Reddy, K. Venugopal Reddy, A. N. Mallika
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2014)
Article
Materials Science, Multidisciplinary
A. N. Mallika, A. Ramachandra Reddy, K. Sowri Babu, Ch. Sujatha, K. Venugopal Reddy
Article
Materials Science, Ceramics
K. Sowri Babu, A. Ramachandra Reddy, Ch. Sujatha, K. Venugopal Reddy, A. N. Mallika
JOURNAL OF ADVANCED CERAMICS
(2013)
Proceedings Paper
Engineering, Electrical & Electronic
A. N. Mallika, A. Ramachandra Reddy, K. SowriBabu Babu, K. Venugopal Reddy
PHYSICS OF SEMICONDUCTOR DEVICES
(2014)
Proceedings Paper
Engineering, Electrical & Electronic
A. N. Mallika, A. Ramachandra Reddy, K. Sowribabu, Ch Sujatha, K. Venugopalreddy
2013 INTERNATIONAL CONFERENCE ON ADVANCED NANOMATERIALS AND EMERGING ENGINEERING TECHNOLOGIES (ICANMEET)
(2013)