Article
Engineering, Electrical & Electronic
Usman Ahmad, Mehwish Afzia, Faheem Shah, Bushra Ismail, Abdur Rahim, Rafaqat Ali Khan
Summary: Mn2+ and Cr3+ co-doped nickel ferrite nanoparticles were synthesized using a cost effective and eco-friendly chemical co-precipitation method. The influence of dopants on the structural, electrical and magnetic properties of nickel ferrite was investigated. The composition with dopant content of x,y = 0.1 and 0.2 exhibited optimum performance.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
M. Sertkol, Y. Slimani, M. A. Almessiere, H. Sozeri, R. Jermy, A. Manikandan, S. E. Shirsath, A. UI-Hamid, A. Baykal
Summary: In this study, MnZn spinel nanoferrites were successfully fabricated via ultrasonic irradiation. The structural and morphological analysis were investigated using various instruments. The results showed that the prepared SNFs exhibited superparamagnetic and ferrimagnetic behavior. The saturation magnetization reached the maximum value at an Er and Dy co-doping concentration of 0.04 and decreased with further co-doping concentrations.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Applied
Aleena Kiran, Majid Niaz Akhtar, Muhammad Yousaf, Khalid Mujassam Batoo, Omar M. Aldossary, Salman Naeem Khan
Summary: In this study, nanoferrites doped with different rare earth elements were prepared using a sol-gel method, and their structural, magnetic, and electromagnetic properties were comprehensively evaluated. The results showed that these materials are suitable for microwave and high frequency applications, making them promising for various technological advancements.
JOURNAL OF RARE EARTHS
(2021)
Article
Materials Science, Multidisciplinary
Kiran Naz, Junaid Kareem Khan, Muhammad Khalid, Muhammad Saeed Akhtar, Zaheer Abbas Gilani, H. M. Noor ul Huda Khan Asghar, Gaber A. M. Mersal, Mohamed M. Ibrahim, A. Muhammad, M. G. B. Ashiq
Summary: A series of nickel substituted copper spinel ferrite nanoparticles were fabricated using sol-gel auto-combustion technique. The structural properties of the compound were determined through X-ray diffraction analysis. The dielectric properties of the synthesized nanomaterials were observed to vary with the nickel concentration, suggesting their potential application in microwave devices.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Ceramics
Ch Srinivas, K. Naga Praveen, E. Ranjith Kumar, Surendra Singh, Sher Singh Meena, Pramod Bhatt, T. V. Chandrasekhar Rao, Debashish Sarkar, B. Arun, K. C. James Raju, D. L. Sastry
Summary: The sol-gel auto combustion technique was used to prepare RE doped Mn-Ni-Zn ferrite systems, which exhibited significant influence on the superexchange interaction and magnetic behavior. These systems showed good absorption performance for electromagnetic waves.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
J. Lakshmikantha, G. Krishnamurthy, B. M. Nagabhushan, E. Melagiriyappa
Summary: Nanosized M-type hexaferrites Sr(1-x)GdxFe12O19 were synthesized and the influences of Gd3+ ions substitution on their structural, electrical and magnetic properties were investigated. The study found that increasing Gd3+ ion content resulted in larger lattice parameters, decreased dielectric constant, increased AC conductivity, and decreased magnetic parameters. In addition, vibrating sample magnetometer analysis confirmed the hard magnetic behavior of M-SrHF.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
M. A. Almessiere, B. Unal, Y. Slimani, H. Gungunes, M. S. Toprak, N. Tashkandi, A. Baykal, M. Sertkol, A. Trukhanov, A. Yildiz, A. Manikandan
Summary: Ce-Dy co-doping has significant effects on the crystal structure, optical, and magnetic properties of Ni-Co spinel ferrite microspheres. Increasing Ce3+-Dy3+ content enhances the magnetic capabilities of the ferrite microspheres. The AC conductivity and dielectric properties are also influenced by the Ce-Dy content, with the dielectric properties strongly depending on the frequency.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Environmental
Wan-Yu Lyu, Wei-Di Liu, Meng Li, Min Hong, Kai Guo, Jun Luo, Juanjuan Xing, Qiang Sun, Shengduo Xu, Jin Zou, Zhi-Gang Chen
Summary: This study comprehensively investigates the effect of rare earth element substitutions on the thermoelectric performance of GeTe. It is found that rare earth element substitutions enhance the Seebeck coefficient, reduce lattice thermal conductivity, and improve the dimensionless figure of merit. These findings indicate that rare earth elements can be effective dopants in GeTe to enhance its thermoelectric properties.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zhanmeng Liu, Gang Chen, Xian Li, Xiuguo Lu
Summary: This study successfully prepared two new adsorbents for the adsorption of rare earth elements, which showed good adsorption performance and recycling properties. With advantages of low cost, high adsorption efficiency, magnetic separation, and reusability, MnFe2O4-Al2O3 and MnFe2O4@SiO2-CS hold great application prospects in adsorbing rare earth elements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
M. A. Gabal, Ebtesam Al-Mutairi, Y. M. Al Angari, A. Awad, A. A. Al-Juaid, Abdu Saeed
Summary: Ternary hybrid composites MFe2O4/PANI/MWCNTs (M = Co2+, Cu2+, Mg2+, Ni2+, and Zn2+) were synthesized using sucrose-assisted auto-combustion route followed by in situ polymerization. The developed composites showed improved thermal stability, high conductivity, and dielectric constants. XRD and FT-IR measurements indicated interaction between the composite components. TEM exhibited the adsorption of MFe2O4 to MWCNTs and their coating with PANI layers. VSM indicated a reduction in magnetization due to the coating of magnetic MFe2O4 with non-magnetic PANI. Electrical properties measurements revealed the significant improvement in conductivity and dielectric constants by incorporating ferrites in the composites.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Physical
Yuhao Wang, Yu-Jun Jin, Zhao-Ying Ding, Gui Cao, Zhan-Guo Liu, Tao Wei, Jia-Hu Ouyang, Ya-Ming Wang, Yu-Jin Wang
Summary: A series of new high-entropy rare-earth zirconates were synthesized using a solid-state reaction method, and their crystal structure, microstructure, and electrical properties were studied. The high-entropy rare-earth zirconates exhibited a single-phase pyrochlore structure with high relative density and fine grain sizes. Among them, (Nd0.2Sm0.2Eu0.2Gd0.2Dy0.2)(2)Zr2O7 showed excellent electrical conductivity at 1073K.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Junaid Kareem Khan, Muhammad Khalid, Ali Dad Chandio, Kiran Shahzadi, Zaheer Uddin, Ghulam Mustafa, Muhammad Saeed Akhtar, Naimat Ullah Channa, Zaheer Abbas Gilani
Summary: Spinel ferrites are widely studied due to their practical high frequency applications. Nickel spinel ferrites with varying aluminum doping concentrations were prepared and the dielectric properties were investigated.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Philips O. Agboola, Sajjad Haider, Imran Shakir
Summary: Nd-substituted NiFe2O4 nanocrystals were prepared using the co-precipitation route and characterized using various techniques. The results showed that these nanocrystalline ferrites had small crystallite size, specific magnetic properties, and dielectric performance, indicating their potential for advanced technological applications.
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
M. Ravi Kanth, B. Dhanalakshmi, P. S. V. Subba Rao, B. Parvatheeswara Rao
Summary: In this study, indium and chromium doped nickel zinc ferrites were synthesized and different microstructures and dielectric behaviors were observed. These differences may be attributed to the size differences between the substituted ions, the preferences of doped ions, and different conduction mechanisms.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
Ming Li, You Zhou, Yunhai Chen, Ruishu Yang, Xiangyang Wei, Shuanhu Wang, Kexin Jin
Summary: This study systematically investigates the intrinsic effects of rare earth elements on the amorphous two-dimensional electron gas (a-2DEG) at ReAlO3/SrTiO3 heterointerfaces, revealing the critical influence of the ionization potential of Re elements on the 2DEG. The photoresponsive properties of heterointerfaces with different ionization potentials are comprehensively examined, showing a correlation between ionization potential and sheet resistance. Additionally, a unique recovery behavior of transient-persistent photoconductivity coexistence is discovered at low temperatures at the TmAlO3/SrTiO3 heterointerface.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Ceramics
Shagufta Gulbadan, Muhammad Azhar Khan, Ghulam Abbas Ashraf, Khalid Mahmood, Muhammad Shahid, M. Irfan, Abrar Ahmad
Summary: Ba0.6Sr0.4-xYbxFe12-yCoyO19 M-type hexaferrite was synthesized using the auto combustion sol-gel process and sintered in a muffle furnace. XRD, FTIR, Raman, and Photoluminescence spectroscopies were used to analyze the samples. The XRD patterns confirmed the single phase of the synthesized samples. Changes in Yb-Co concentration affected lattice parameters and unit cell volume. FTIR spectroscopy revealed the formation of multiple absorption bands. Raman spectra showed strain in the unit cell. PL spectra exhibited emissions in the range of 630 nm-700 nm. The substitution improved dielectric losses and AC conductivity. The findings suggest that samples with appropriate cationic substitution can be used for microwave and high-frequency applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Muhammad Arshad, Muhammad Azhar Khan, Ghulam Abbas Ashraf, Khalid Mahmood, Muhammad Imran Arshad
Summary: A series of (Zr-Co) substituted Y-type polycrystalline hexaferrite were fabricated by sol-gel auto combustion method, and their structural and electrical properties were investigated. The addition of Zr4+-Co2+ metal cations resulted in an increase in lattice parameters and a decrease in grain size. The formation of pure single-phase Y-type hexaferrites was confirmed by X-ray powder diffraction and FTIR spectra. The electrical resistivity, dielectric properties, and complex impedance spectroscopy indicated that the substitution of Zr4+-Co2+ ions significantly influenced the conduction and dielectric behavior of the nano ferrite materials.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Min Ji, Pengfei Ji, Sadok Mehrez, Sagr Alamri, Majid Niaz Akhtar
Summary: The current study describes the fabrication and analysis of a bi-layer microwave absorber made of magnetic Sr2FeReO6 (SRO) powder and a magnetoelectric nanocomposite formed of rod-like magnetic Sr2FeReO6 powder wrapped in polygonal SnS2 powder (SRSS). The analysis showed that successful synthesis of rod and polygonal particles with soft magnetic properties was achieved. The designed bi-layer absorber exhibited broad X-band frequency absorption capabilities, with a reflection loss of -33 dB at 10.3 GHz and a thickness of only 2.5 mm.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Amna Irshad, H. H. Somaily, Sonia Zulfiqar, Muhammad Farooq Warsi, Muhammad Imran Din, Khadija Chaudhary, Muhammad Shahid
Summary: In this study, NiAl2O4 and silver doped NiAl2O4 were synthesized using a sol-gel approach, and their composite with g-C3N4 was successfully prepared through ultrasonication. The characterization of the fabricated materials was done using various techniques, and the electrochemical behavior of the fabricated electrode materials was investigated using electrochemical techniques. The results showed that Ag-NiAl2O4@g-C3N4 nanocomposite was a more active electrode material compared to the other prepared electrodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Muhammad Asam Raza, Kanwal Javaid, Umme Farwa, Anam Javaid, Muhammad Yaseen, Jan K. Maurin, Armand Budzianowski, Bushra Iqbal, Saba Ibrahim
Summary: 1,3-di(Naphthalen-1-yl)Thiourea was synthesized using a one pot synthesis technique and its structure was determined. In vitro studies showed good antibacterial activity and enzyme inhibition potential, indicating its potential use as a therapeutic agent.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Physics, Condensed Matter
Memoona Mehmood, Muhammad Nasir Rasul, Altaf Hussain, Muhammad Amir Rafiq, Faisal Iqbal, Alina Manzoor, Muhammad Azhar Khan
Summary: In this study, the physical properties of novel antiperovskite materials XCRh3 (X = Cd, Ta, W, Re, Os, Ir, Pt, Au, Hg, Ce, Pr, Nd, Pm, Sm, Eu, Tb) were investigated using density functional theory. The study focused on structural, electronic, elastic, magnetic, and thermodynamic properties, and included the computation of mechanical parameters and analysis of thermodynamic properties under various pressures and temperatures.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Syeda Rabia Ejaz, Muhammad Azhar Khan, Shagufta Gulbadan, Muhammad Shahzad Shifa, Ghulam Murtaza
Summary: Nanocrystalline X-type hexaferrites with the composition Sr2-xCaxNi2-yBayFe28O46 (x = y = 0-0.5) were synthesized via sol-gel auto-combustion method. The inclusion of Ca-Ba significantly altered the porosity, X-ray density, and ac conductivity of the synthesized materials. The dielectric constant values of all compositions were higher than Sr2Ni2Fe28O46, making these materials suitable for high dielectric constant applications. VSM analysis showed decreased magnetic properties with increasing Ca-Ba concentration, suggesting potential use in memory devices, microwave absorption, and magnetic radar-absorbing materials for high-frequency applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Inorganic & Nuclear
Swah Mohd. Nashre-ul-Islam, Kamala Kanta Borah, Muhammad Asam Raza, Fureya Elif Ozturkkan
Summary: A new Zn(II) coordination polymer based on o-phthalato and 2-aminopyridine has been synthesized and characterized. The stability and non-covalent interactions of the compound in the solid state have been investigated, and its potential as an anti-SARS-CoV-2 drug has been evaluated through molecular docking and ADMET calculations.
Article
Environmental Sciences
M. Abdullah, G. Murtaza, Muhammad Azhar Khan
Summary: CuFe2O4 nanoparticles were synthesized via the sol-gel auto combustion method and hybridized with layer-structured graphene. The nanoparticles exhibited a crystallite size up to 53 nm, with variations depending on the copper ferrite content. Fourier transform infrared spectroscopy confirmed the presence of carboxyl stretching, aromatic stretching, and Fe-O bonds. Scanning electron microscopy images revealed the surface morphology of the nanoparticles and nanocomposites, while vibrating sample magnetometer results showed their magnetic properties. Energy dispersive X-ray spectroscopy and Brunauer-Emmett-Teller surface area analysis confirmed the composition and surface characteristics of the materials. The composite demonstrated excellent adsorption capacities for As(III) and As(V) due to the synergistic effect of CuFe2O4 and graphene.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Materials Science, Ceramics
Muhammad Arshad, Muhammad Azhar Khan, Raqiqa Tur Rasool, Muhammad Imran Arshad, M. Irfan
Summary: The impact of Cr3+ substitution on the electrical and dielectric properties of Y-type hexaferrites was studied. The substitution slightly increased the lattice parameters and affected physical parameters such as porosity and specific surface area. The substitution also enhanced the room temperature electrical resistivity and reduced dielectric losses, making these hexaferrites efficient materials for high-frequency applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Kanwal Majeed, Muhammad Azhar Khan, Raqiqa Tur Rasool, Shagufta Gulbadan, Abeer A. AlObaid, M. Irfan, Ghulam Abbas Ashraf, Ghazanfar Nazir, Majid Niaz Akhtar
Summary: Recently, nano-sized Z-type hexagonal ferrites with Indium substitution have been synthesized and shown to have excellent properties for microwave absorption and resolving EM pollution. These materials also have significant applications in EM interference shielding and radar cross-section reduction, making them suitable for stealth technology.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Majid Niaz Akhtar, Nissren Tamam, Sunder Makhdoom, M. A. Baqir, Mustafa Z. Mahmoud, Muhammad Yousaf, Muhammad Azhar Khan, M. Irfan, Z. A. Alrowaili, M. S. Al-Buriahi
Summary: In this study, Dy-Gd doped YIG nano ferrites with excellent absorbing power and low cost were prepared by a sol-gel self-ignition route. The effects of Dy-Gd on the structural and electromagnetic characteristics of YIG were evaluated using various characterization techniques. The results showed that Dy-Gd doped YIG ferrites exhibit promising performance for microwave absorption and electromagnetic shielding applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Materials Science, Multidisciplinary
Zeshan Ali Sandhu, Muhammad Asam Raza, Umme Farwa, Samia Nasr, Ibrahim Sayed Yahia, Seerat Fatima, Mehmuna Munawar, Yousra Hadayet, Sufyan Ashraf, Haseeb Ashraf
Summary: This review article provides a comprehensive overview of recent advancements in the synthesis of metal sulfide nanoparticles (MSNs) and their application in dye degradation. It discusses both conventional and response surface methodology (RSM) optimization approaches and highlights recent research on optimizing the synthesis conditions for various MSNs. The article also presents a discussion on the photocatalytic performance of MSNs in the degradation of various organic dyes.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Physical
Muhammad Danish, Alia Ashraf, Zeshan Ali Sandhu, Muhammad Asam Raza, Ali Haider Bhalli, Abdullah G. Al-Sehemi
Summary: Nanocomposites of various metal sulfides were synthesized using a soft template method and characterized for their spectral, morphological, and electrochemical properties. The results showed that these composites exhibited desirable properties for potential energy storage applications.
JOURNAL OF MOLECULAR STRUCTURE
(2023)