A5035102725- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Superconductivity in MgB2 and Alloys
- Advanced Condensed Matter Physics
- Electronic and Structural Properties of Oxides
- Advanced Thermoelectric Materials and Devices
- Magnetic properties of thin films
- Copper-based nanomaterials and applications
- Magnetic Properties of Alloys
- Shape Memory Alloy Transformations
- Silicon Carbide Semiconductor Technologies
- Multiferroics and related materials
- Magnesium Oxide Properties and Applications
- ZnO doping and properties
- Surface Modification and Superhydrophobicity
- Advanced Sensor and Energy Harvesting Materials
- Nanofluid Flow and Heat Transfer
- Thermal Expansion and Ionic Conductivity
- Gas Sensing Nanomaterials and Sensors
- Characterization and Applications of Magnetic Nanoparticles
- Copper Interconnects and Reliability
- HVDC Systems and Fault Protection
- Dyeing and Modifying Textile Fibers
- Boron and Carbon Nanomaterials Research
- Iron oxide chemistry and applications
National Research and Innovation Agency
2022-2023
Indonesian Institute of Sciences
2019-2022
Chungbuk National University
2012-2019
We investigated influence of 4 wt. % BaSnO3 (BSO) addition on the thickness dependence critical current density (Jc) GdBa2Cu3O7−δ (GdBCO) thin films deposited by using pulsed laser deposition technique. The results show that Jc measured at 77 K GdBCO is significantly enhanced BSO. Thickness self-field in BSO doped reduced comparison with pure films. Improved field performance also observed for BSO-doped up to 1.5 μm. enhancements are attributed growth artificial pinning centers form nano...
The effect of incorporating nanostructured defects in a form BaSnO3 (BSO) nanorods on the thickness dependence critical current density (Jc) GdBa2Cu3O7-x (GdBCO) thin films was investigated. Pure and 2 wt. % BSO-doped GdBCO were fabricated by pulsed laser deposition with thicknesses t both increasing from 0.2 μm to 1.5 μm. magnetization data measured at 77 K field being applied parallel c-axis showed two important improvements. First, Jcs film significantly enhanced BSO addition. Second,...
Extended X-ray absorption fine structure (EXAFS) spectroscopy is a powerful method to investigate the local of thin films. Here, we have studied EXAFS MgB2 films grown on SiC buffer layers. Crystalline layers with different thickness 70, 100, and 130 nm were deposited Al2O3 (0001) substrates by using pulsed laser deposition method, then layer hybrid physical-chemical vapor technique. Transition temperature film decreased increasing layer. However, Tc dropping went no farther than 100...
A close correlation between the nanostructure formations and thickness dependence of in-field critical current density (Jc) in GdBa2Cu3O7-δ (GdBCO) films is reported. Pure 2 wt. % BaSnO3 (BSO)-added GdBCO with film thicknesses (d) ranging from 0.2 μm to 1.5 were deposited on SrTiO3 single-crystalline substrates by using a pulsed laser deposition technique. Magnetization data measured at 77 K magnetic field applied parallel c-axis showed general trend decreasing Jc increasing residual...
The structural characterization, and the electronic, magnetic magnetocaloric properties of polycrystalline samples La0.7Ca0.3Mn1−xCuxO3 (x = 0, 0.04, 0.06, 0.08) have been investigated. X-ray powder diffraction analysis indicates all having an orthorhombic structure, belonging to Pbnm space group. absorption fine structure spectra reveal that Mn is in mixed state Mn3+ Mn4+ while Cu has divalent (Cu2+). With substitution Cu2+ for Mn, Curie temperature, TC, decreases monotonically from 248 K x...
We have fabricated the superconducting MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> films grown on three different crystalline SiC-buffer layers of thickness by means hybrid physical-chemical vapor deposition technique and pulsed laser method. Significant changes in microstructural properties with addition were observed. The analyses revealed that columnar grains formed perpendicularly to substrates, thus, enhancing all critical...
Natural iron sand-based Mg1-xNixFe2O4 magnetic nanoparticles (x = 0.25, 0.50, 0.75) were synthesized using a simple co-precipitation method. The resulting characterized by X-Ray Diffraction, Vibrating Sample Magnetometer, Energy Dispersive Analysis, Atomic Absorption Spectroscopy and Scanning Electron Microscopy. crystallite size data of the revealed that all samples with varied x lie under 17 nm; 0.5 variation having least 14.90 nm. surface microstructure elucidation SEM also confirmed...
We have grown <TEX>$MgB_2$</TEX> on SiC buffer layer by using metallic Hastelloy tape as the substrate. was chosen for its potential practical applications, mainly in power cable industry. layers were deposited tapes at 400, 500, and <TEX>$600^{\circ}C$</TEX> a pulsed laser deposition method, then hybrid physical-chemical vapor technique, films three different layers. An enhancement of critical current density values noticed SiC/Hastelloy 500 <TEX>$600^{\circ}C$</TEX>. From surface analysis,...
The superhydrophobic and antibacterial properties of zinc oxide (ZnO) nanoparticles-coated cotton fabric have been investigated. structures morphologies the ZnO nanoparticles were characterized determined through x-ray diffraction (XRD) transmission electron microscopy (TEM). show single phase material with common micro-rod shape particles an average length a diameter about 234 98 nm, respectively. diffuse into spray coating method. Prior to coating, surface preparation is primary step...
Production of <TEX>$MgB_2$</TEX> film on metallic Hastelloy with SiC as the buffer layer was achieved by means hybrid physical-chemical vapor deposition technique, whereas layers varied thickness 170 and 250 nm were fabricated inside a pulsed laser chamber. Superconducting transition temperature critical current density verified transport magnetic measurement, respectively. With layer, reduced delaminated area at interface <TEX>$MgB_2$</TEX>-Hastelloy slightly increased <TEX>$T_c$</TEX>...
The critical current density (J <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> ) of pulsed-laser-deposited GdBa xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Cu xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">7-δ</sub> (GdBCO) superconducting films with film thickness (d) ranging from 0.2 to 1.5 μm was studied as functions temperature (T) and held (H). A dependence both the self-held...
La 0.7 Ba 0.25 Nd 0.05 MnO 3 (LBNMO) compounds were synthesized using two different methods, namely are solid-state reaction (SS) and sol-gel (SG). All samples heat-treated at 1200 °C for 12 hours. The investigation on structural, morphological, magnetic properties was carried out by X-Ray Diffractometer (XRD), Scanning Electron Microscope (SEM), Vibrating Samples Magnetometer (VSM) room temperature. From the Rietveld refinement, both have formed a rhombohedral structure with an R-3c (167)...