Article
Materials Science, Multidisciplinary
Sachin Kumar Godara, Varinder Kaur, Kirti Chuchra, S. B. Narang, Gurpreet Singh, Mandeep singh, Aanchal chawla, Swati Verma, Gopala Ram Bhadu, Jayesh C. Chaudhari, P. D. Babu, Ashwani Kumar Sood
Summary: A sol-gel auto combustion method was used to synthesize Ba0.5Sr0.5ZnxZrxFe12-2xO19 (x = 0.00-1.00) samples, with XRD data showing pure phase formation and an increase in lattice parameters with composition. Magnetic measurements indicated a decrease in coercivity with the increasing concentration of non-magnetic dopants, while the saturation magnetization peaked at x = 0.4 sample.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Physical
Gulzar Ahmad Lone, Mohd Ikram
Summary: This study investigates the structural and dielectric properties of pristine and Ni-doped spinel CoFe2O4. The samples were synthesized using a solid-state reaction approach, and the structural analysis confirmed a single-phase FCC cubic spinel structure. The cationic distribution revealed changes in occupancy due to doping. SEM and EDS were used for microstructural and elemental composition analysis. The study found the presence of orientational and interfacial polarization in the samples. The dielectric constant showed a temperature-dependent behavior, with an increase observed after reaching a certain temperature. CoFe1.9Ni0.9O4 exhibited low dielectric loss and strong relaxation behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Surinder Singh, Anumeet Kaur, Parwinder Kaur, Lakhwant Singh
Summary: LaFeO3 modified Sodium Bismuth Titanate (NBT) with varying LaFeO3 content were successfully synthesized via sol-gel method. The XRD and Raman spectra confirmed the phase purity and microstructure of the samples. Ferroelectric behavior decreased with doping, with some samples showing paramagnetic or weak ferromagnetic characteristics. The absence of magnetic ordering was confirmed in certain samples through ZFC and FC magnetization curves.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
J. Sharmila Justus, S. Dawn Dharma Roy, K. Saravanakumar, A. Moses Ezhil Raj
Summary: This work investigates the effect of post-growth annealing on the phase transformation leading to phase pure hematite nanoparticles. X-ray diffraction studies and thermal analysis confirm the purity and structural changes in the samples.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
Bhagyashree Mohanty, S. Bhattacharjee, S. N. Sarangi, N. C. Nayak, R. K. Parida, B. N. Parida
Summary: In this study, a single-phase material 50BLFO-50BST was successfully synthesized with good crystallinity and optical properties. The investigations of dielectric, impedance, and modulus properties suggest the material has potential electromagnetic characteristics. The material is identified as a promising candidate for magnetic storage devices based on the room temperature ferromagnetic parameters.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Sonu Rani, Mukesh Shekhar, Pawan Kumar, Surabhi Prasad
Summary: Research investigated the optimization of annealing temperature for the preparation of pure phase bismuth ferrite using quantitative Rietveld analysis, which showed that with increasing annealing temperature, the crystallite size increases and the phase percentage of the secondary phase decreases.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Biomedical
Camila Bussola Tovani, Thibaut Divoux, Sebastien Manneville, Thierry Azais, Guillaume Laurent, Marta de Frutos, Alexandre Gloter, Pietro Ciancaglini, Ana P. Ramos, Nadine Nassif
Summary: This study investigates the physiological and pathological effects of strontium (Sr2 +) on bone biomineralization. The results show that excessive levels of Sr2 + destabilize the mineral and collagen fibril assembly, leading to impaired cellular activity and correlating with bone-weakening disorders.
ACTA BIOMATERIALIA
(2023)
Article
Engineering, Electrical & Electronic
Bhagyashree Mohanty, S. Bhattacharjee, N. C. Nayak, R. K. Parida, B. N. Parida
Summary: Investigation of a composite material with magnetostriction and piezoelectric behavior shows promising characteristics for practical device applications, with moderate Curie temperature, high resistivity, and ferromagnetic properties.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Inorganic & Nuclear
Bhagyashree Mohanty, Nimai C. Nayak, B. N. Parida, R. K. Parida
Summary: The lead-free polycrystalline compound 0.5(NdFeO3)-0.5(Ba0.5Sr0.5TiO3) (NFO-BST) was successfully prepared through conventional solid-state reaction route. The compound exhibited a tetragonal structure with a lattice parameter of a = b = 3.99(4) Å, and c = 4.017(2) Å, confirmed by X-ray Diffraction (XRD) and Rietveld Refinement. The sample showed a dielectric constant of 408.32 at 100 Hz frequency at room temperature, making it suitable for microwave absorbers. The compound also displayed ferroelectric and ferromagnetic properties, indicating potential applications in multiferroic devices.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Coatings & Films
Lei Liu, Fengcang Ma, Binbin Kang, Ping Liu, Shengcai Qi, Wei Li, Ke Zhang, Xiaohong Chen
Summary: A strontium-doped titanium oxide coating was successfully prepared on a TA4 substrate using one-step microarc oxidation technology. The bioactivity of the coating was evaluated through tests on bone-like apatite formation and cell culture experiments. The coating's corrosion resistance was also characterized through electrochemical tests. The composition and morphology of the coating were analyzed using XRD, SEM, and XPS before and after immersion in simulated body fluid.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Roy Roukos, Jimmy Romanos, Sara Abou Dargham, Denis Chaumont
Summary: The room temperature crystal structure and phase evolution of Ca-substituted Na1/2Bi1/2TiO3(NBCT) at A-site were studied using X-ray diffraction (XRD) and Raman spectroscopy. The sintered samples exhibited peak splitting for all Bragg peaks, indicating a departure from the expected rhombohedral phase. The Rietveld refinement analysis revealed the coexistence of rhombohedral and tetragonal phases at room temperature.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Randeep Kaur, Anumeet Kaur
Summary: A solid state reaction technique was used to synthesize a series of solid solution materials, and their structures were analyzed using X-ray diffraction and Raman spectroscopy. The experimental results showed that these samples all exhibited ferroelectric and magnetic characteristics at room temperature, with specific phase transition temperatures. The impedance and modulus analysis revealed the contributions of bulk and grain boundaries in the samples, and conductivity relaxation was observed in all samples.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Carlo Galli, Elena Landi, Silvana Belletti, Maria Teresa Colangelo, Stefano Guizzardi
Summary: The study demonstrates the good biocompatibility and tissue integration-promoting effects of Mg,Sr co-substituted hydroxyapatite granules on human osteoblasts.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Shilpa Kumari, Radheshyam Rai, Pawan Kumar, O. P. Thakur, Ratnamala Chatterjee
Summary: The structural and electrical properties of Pr1-xEuxMnO3 manganites were investigated in this study, revealing a mixed-phase nature and decreasing unit cell volume with increased Eu content. The presence of oxygen vacancies was indicated by low activation energy values, and the grain boundary effect was found to diminish with increasing temperature, attributed to the development of oxygen vacancies during sintering. These defects influenced the impedance at the barrier of the grain and grain boundary interface.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Ceramics
Amirhossein Moghanian, Majid Raz, Zahra Miri, Saba Nasiripour, Loghman Dehghan Mehrjardi, Mohammad Mohaghegh Dehabadi, Morteza Elsa
Summary: Biomimetic scaffolds were synthesized to study calcium phosphate deposits formation in gelatin hydrogel under similar physiological conditions. The presence of magnesium and strontium ions as modifiers and their effect on scaffold properties were evaluated. The scaffolds exhibited a smooth and needle-shaped surface, and Fourier transform infrared spectroscopy confirmed the presence of phosphate and hydroxyl bonds. The presence of metal ions resulted in the formation of hydroxyapatite after 3 days in simulated body fluid. Cell culture experiments demonstrated biocompatibility and significant alkaline phosphate activity of the scaffolds containing 5 mol.% Mg and Sr. These fabricated scaffolds showed improved biological and structural properties, confirming their potential as bone tissue substitutes.
CERAMICS INTERNATIONAL
(2023)