A5031706587- Rare-earth and actinide compounds
- Physics of Superconductivity and Magnetism
- Quantum Dots Synthesis And Properties
- Semiconductor materials and devices
- 2D Materials and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Ferroelectric and Piezoelectric Materials
- Magnetic properties of thin films
- ZnO doping and properties
- Nanocluster Synthesis and Applications
- Multiferroics and related materials
- MXene and MAX Phase Materials
- Diamond and Carbon-based Materials Research
- Graphene research and applications
- Superconductivity in MgB2 and Alloys
- Magnetic and transport properties of perovskites and related materials
- Topological Materials and Phenomena
- Advanced Photocatalysis Techniques
- Ferroelectric and Negative Capacitance Devices
- Plasmonic and Surface Plasmon Research
- Transition Metal Oxide Nanomaterials
National Institute of Science Education and Research
2021-2024
Homi Bhabha National Institute
2022-2024
The intermetallic compound NiBi3 belongs to the interesting class of superconductors that are based on strong ferromagnetic elements. Although has been grown in single-crystal form and also demonstrated at interface Ni Bi layers, uniform thin films have yet appear literature. In this work, we explored codeposition method, wherein high-purity metals evaporated simultaneously controlled rates, study dynamics involved formation films. We used Rutherford backscattering spectrometry (RBS)...
Considering the potential applications of Al2O3/TiO2 nanolaminates (ATA NLs) in storage capacitors, device-grade ATA NLs are fabricated using an ALD system, wherein effect precursor purging time on interfacial, and dielectric properties is thoroughly investigated. With increase half-cycle from 2 to 4 s, observed improvement interface quality sublayer density these ascribed efficient removal reaction by-products impurities. Moreover, with purge constant concurrent decrease loss ∼132 154 ∼0.29...
Anharmonicity and impurities have a significant impact on the dynamic optical properties of crystalline solids. In this report, we performed temperature-dependent Raman spectroscopy in range 300–800 K for hydrothermally synthesized titanium dioxide (TiO2) nanorod composed microflowers doped with Cu. X-ray diffraction high resolution transmission electron microscopy confirm pure rutile phase both pristine Cu TiO2. The most intense Eg A1g modes exhibit frequency redshift, linewidth increases...
Layered transition-metal dichalcogenides (TMDs) are gaining significant attention because they exhibit unconventional magnetic properties due to crystal imperfections in their usually nonmagnetic 2D structure and pertinent for the development of spintronic devices. This work aims investigate response self-engineered Se-deficient TiSe2 thin films, synthesized using chemical vapor deposition. We demonstrate tunability ferromagnetic order with introduction Au atoms low-energy Au-ion...
Abstract The combination of 2D materials and noble metallic nanostructure is becoming an attractive research domain for label-free, highly sensitive surface-enhanced Raman spectroscopy (SERS) applications. This study demonstrated photocatalysis degradation SERS enhancements organic fluorophore (Rhodamine 6G) on two-dimensional (2D) TiSe 2 using spectroscopy. Au nanoparticles (NPs) were decorated thin films by thermal annealing at variable temperatures. selective deposition NPs the hexagonal...
The thin films of Ni and Bi are known to form NiBi3 NiBi compounds spontaneously at the interface, which become superconducting below 4.2 K show ferromagnetism either intrinsically or due impurities. Formation is a slow diffusion reaction, means local environment around atoms may vary with time temperature. In this report, we assess feasibility using X-ray Absorption Spectroscopy (XAS) as tool track changes in bonding NiBi. Thermal annealing temperatures up 500 °C was used induce system....
Manipulating light at the sub-wavelength level is a crucial feature of surface plasmon resonance (SPR) properties for wide range nanostructures. Noble metals like Au and Ag are most commonly used as SPR materials. Significant attention being devoted to identify develop non-noble metal plasmonic materials whose optical can be reconfigured response by structural phase changes. Chromium (Cr) which supports resonance, transition with shiny finished, highly non-corrosive, bio-compatible alloys,...
Abstract Breaking time‐reversal symmetry through magnetic impurities has been a useful strategy for achieving exotic physical phenomena in topological insulators long time. In contrast, reports on ferromagnetism by introducing non‐magnetic elements are very scarce. The present article illustrates Au ion implantation as an alternative tool to study the structural and properties Bi 2 Se 3 nanocrystals grown chemical vapor deposition. as‐grown pristine exhibits triangular hexagonal plate‐like...
Ion implantation is one of the versatile techniques for controllable doping desired ions in solid materials. This work discusses tunability structural, optical, and magnetic properties hydrothermally synthesized rutile TiO2 microflowers composed nanorods due to C ion implantations. The 1.5 MeV are implanted fluence range 1 × 1015 – 2 1016 ions/cm2 normal incidence. increase peak broadening X-ray diffraction (XRD) Raman spectra ion-implanted compared pristine indicates degradation...
Local fluctuations in the superconducting order parameters granular systems show interesting magnetotransport behavior, particularly relevant to nanowires. Kivelson and Spivak [Phys. Rev. B 45, 10490 (1992)] have shown that density signs of supercurrent can lead oscillating negative magnetoresistance (MR). Here, we present measurements 100 nm wide NiBi3 nanowires, patterned by focused ion beam lithography, from films containing different concentrations magnetic Ni impurities. The nanowire a...