A5044253133- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Multiferroics and related materials
- Magnetic Properties and Synthesis of Ferrites
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Electromagnetic wave absorption materials
- Physics of Superconductivity and Magnetism
- X-ray Diffraction in Crystallography
- Advanced Battery Technologies Research
- Metal and Thin Film Mechanics
- Conducting polymers and applications
- Iron oxide chemistry and applications
- Organic Electronics and Photovoltaics
- Semiconductor materials and devices
- Orthopaedic implants and arthroplasty
- Energetic Materials and Combustion
- Material Selection and Properties
- Rare-earth and actinide compounds
- Bone Tissue Engineering Materials
- Titanium Alloys Microstructure and Properties
- Thermal and Kinetic Analysis
- Superconductivity in MgB2 and Alloys
- Advanced Photocatalysis Techniques
- Magnetic Properties of Alloys
Indonesia Defense University
2020-2024
National Research and Innovation Agency
2023-2024
Hanbat National University
2021
Korea Basic Science Institute
2021
Jakarta State Polytechnic
2017-2020
Padjadjaran University
2018-2019
University of Indonesia
2014-2018
Universitas Esa Unggul
2018
Abstract TiNb 2 O 7 represents a promising anode material for lithium‐ion batteries (LIBs), but its practical applications are currently hampered by the non‐negligible volumetric expansion and contraction during charge/discharge process sluggish ion/electron kinetics. A combination technique is reported systematically optimizing porous spherical morphology, crystal structure, surface decoration of mesoporous Cu 2+ ‐doped microspheres to enhance electrochemical Li + storage performance...
Given the increasing attention to safety issues of lithium-ion batteries (LIBs) and continuous rise in price lithium its compounds, it is urgent explore innovative electrochemical energy device alternatives LIBs. Major efforts have been devoted developing rechargeable aluminum-ion (AIBs), owing their low cost high density derived from 3-electron redox reaction. Moreover, dendrite-free plating behavior with room-temperature ionic liquid electrolytes endows AIBs great expectations. A marked...
The crystal structure, cryogenic magnetic properties, and magnetocaloric performance of double perovskite Eu2NiMnO6 (ENMO), Gd2NiMnO6 (GNMO), Tb2NiMnO6 (TNMO) ceramic powder samples synthesized by solid-state method have been investigated. X-ray diffraction structural investigation reveal that all compounds crystallize in the monoclinic structure with a P21/n space group. A ferromagnetic to paramagnetic (FM-PM) second-order phase transition occurred ENMO, GNMO, TNMO at 143, 130, 112 K,...
Rare-earth double perovskite oxides have intriguing magnetocaloric properties at cryogenic temperatures. In this study, Ho2NiMnO6 and Ho2CoMnO6 were synthesized using the sol-gel method, which crystallized in a monoclinic structure P21/n space group. The magnetic phase transition was observed 81.2 K for 73.5 Ho2CoMnO6. presence of paramagnetic matrix short-range ferromagnetic clusters causes disorder these perovskites, resulting Griffiths formation. Arrott plot confirms that compounds...
This study investigates the effect of A-site disorder, characterized by average ionic radius (〈
This review article provides a very general extensive of magnetoresistance (MR), including AMR, CMR, TMR, GMR, and compares the latest findings developments in this field.
Abstract In this study, we report the results of co-substituting Mn2+ and Ti4+ ions for Fe3+ in Strontium hexaferrite lattice to obtain SrFe(12-x)Mnx/2Tix/2O19 or SHF(MTO)x its effect on microwave absorption capacity. Heat treatment various periods led grain growth samples. Co-substituting main phase SrFe12O19 with x = 1.0 reduced coercivity sample 0.0 from 3.82 kOe 1.68 kOe. This paper evaluates combined effects The reflection loss (RL) value samples significantly increased reduction...
Abstract The increasing need for renewable natural resources in various applications such as the medical field, a study has been conducted on using chitosan and collagen to prepare composite nanofiber membranes wound dressing materials. materials used were polyvinyl alcohol (PVA) solution of 10%, 2%, added at concentrations 4%, 8%. are manufactured by an electrospinning technique with PVA-chitosan-collagen ratios 8:2:0, 8:2:2, 8:2:4, 8:2:8. names samples P/Ch/C0, P/Ch/C2, P/Ch/C4, P/Ch/C8,...
Developing biodegradable bone implants using magnesium-based materials has garnered significant attention in research. Magnesium offers favorable properties, such as low density, biocompatibility, elastic modulus like bone, and high toxicity limits. However, improvements are needed mechanical properties degradation rate. This study focuses on enhancing these by developing a novel composite of magnesium with carbonate apatite (CA) reinforcement, Mg/5CA. Compared to hydroxyapatite (HA), CA...
The researches on solid electrolyte have been significantly increasing due to the safety problem in lithium ion battery. phosphates are chosen environmentally friendly. In present study Li4P2O7 was synthesized by state reaction using NH4H2PO4 and Li2CO3 with ratio 1:2 at various temperatures of 600 °C, 800 °C 900 °C. products were characterized x-ray diffraction, scanning electron microscopy impedance spectroscopy. diffraction showed that all samples consisted two phases. It found 52.44%...
We discuss the structure properties of Ba0.6Sr0.4Fe10-xCoxMnTiO19(BSFCMTO) for x = 0.5, 1.0, and 1.5 that influence its magnetic as a microwave absorber. A solid-state reaction method using high-energy milling was used to synthesize hexaferrite. There were no structural changes when Co2+ ion substituted Fe3+ ion; structures all samples hexagonal space group P63/mmc. The surface morphology had heterogeneous particles with size 300 600 nm. tended decrease an increasing number substitutions....
The pyrolysis of the green microalgae Botryococcus braunii in absence and presence Ni/SBA-15 prepared by ultrasonic-assisted sol-gel was investigated using pyrolysis-gas chromatography-mass spectroscopy (Py-GC/MS). Pyrolysis experiments were performed at 350, 450, 550 °C under helium (He) flow. In a catalyst, chemical composition products different temperatures, based on relative peak area, comprised protein/amino acid derivative 9-15%, carbohydrate 5-10%, lipid 13-26%, chlorophyll 24-26%....
In this paper we report the microstructure and magnetic properties of Ti 4+ -Mn ions substitued barium hexaferrites (BHF) with formula BaFe 12-2x Mn x O 19 ( = 0.2, 0.4, 0.6 0.8) which prepared by mechanical alloying successive sintering at 1100 °C. were obtained from TiO 2 MnO precursors mechanically alloyed together BaCO 3 Fe precursors. X-ray diffraction patterns for sintered samples confirmed that materials are consisted single phase BHF structure. Unit cell volume crystallite size was...