Magnetic nanoparticles of Fe3O4 (magnetite) have been synthesized from natural sand iron by co-precipitation method. The were using HCl as solvent and NH3 co-precipitate. at 70°C in two different treatments. Sample without Polyethylene Glycol (PEG) 6000 noted A sample with PEG B symbol. measurement that done for both samples XRD (X-ray diffraction), FTIR (Fourier Transform Infrared) Spectrometry, SEM (Scanning electron microscopy), VSM (Vibrating magnetometer) SAA (Surface area analyzer)....

This study explores the micromagnetic behaviour of MnFe2O4 derived from natural iron sand through coprecipitation method, without need for calcination. Using manganese chlo-ride and as precursors, one can create MnFe2O4. Through utilisation X-ray Diffraction (XRD), Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX), Vibrating Sample Magnetometer (VSM), effectively analyse understand crystal structure, morphology, magnetic properties. The size was reduced by a fac-tor 0.40 nm,...

Abstract The thermal management technology has been extensively applied to enhance the efficiency of renewable-energy devices and electronics. This paper proposes a novel approach utilizing passive method that incorporates phase-change materials (PCMs). Paraffin was used as matrix with addition magnetic particles (Fe 3 O 4 ). In this study, paraffin-magnetite composites were synthesized using an ultrasonic at 80 °C frequency 37 kHz for 30 min. Subsequently, their thermophysical properties...

ZnO thin films were prepared on glass substrate by sol-gel spin-coating method using zinc-acetate dihydrate as precursor. Effect of precursor concentration the morphological and structural was investigated. The diffraction patterns X-ray (XRD) characterization indicated that all polycrystalline with a hexagonal wurtzite crystal structure. peaks indexed to (100), (002) (101) planes. Intensity increased became broader in full width at half maximum (FWHM) values increasing concentration....

The syntheses of BaFe11.6Mg0.2Al0.2O19 with calcination temperature variations 900, 1050, and 1200 °C were conducted through a co-precipitation method to be used as Radar Absorbing Material. raw materials in the were: BaCl2, MgCl2, AlCl3 natural iron sand from Kata Beach-Sumatera Barat, Indonesia. material was characterized using XRD, FE-SEM, VSM, VNA. results confirmed that structure barium hexaferrite crystal did not change due effect temperature. optimum conditions properties obtained for...

In this paper, the effect of doping concentrations Fe and Cr on ZnO powder was studied by using X-ray diffraction (XRD). The doped solid state reaction method with High Speedshaker Mill (HSM) continued sintering at 900°C for 4 hours. Samples have polycrystalline hexagonal wurtzite structure. XRD pattern is not far different from that Cr. intensity decrease peak shifted to a higher 2θ angle indicate change in crystal parameters such as lattice parameters, crystalline sizes, d-spacing.

Iron sand is one of the natural resources in West Sumatra that has not been optimally utilized. One potential locations to get this iron deposits coast Kata. This study aims analyze content and size grains found on Kata Padang Beach, Sumatera Province. Coastal samples are extracted using permanent magnets separate magnetic non-magnetic materials. Characterization Scanning Electron Microscopy with Energy Dispersive X-ray (SEM-EDX) Vibrating Sample Magnetometer (VSM). The result...

In this work, binary dopant barium hexaferrite with nominal composition of BaFe12-2xMgxAlxO19 (x = 0 and 0.1 mol%) have been prepared by co-precipitation method calcination temperature 1100 °C. Various characterization such as, x-ray diffraction (XRD), field emission scanning electron microscope (FESEM), vibrating sample magnetometer (VSM) vector network analyzer (VNA) has done. The XRD evaluations confirmed the successful substitution Mg Al cations in lattice. VSM analysis proved that...

In this paper, the synthesis of BaFe12-2xCoxNixO19 (x = 0–0.2) materials at a calcination temperature 950 °C using co-precipitation method have been reported. The precursor concentrations mixture were varied to identify optimum sample. results suggested that structure barium hexa-ferrite crystal did not change due effect Co and Ni additions. condition is obtained concentration 0.2% mol ions resulting single phase hexa-ferrite. XRD analysis confirmed addition affects growth crystals in plane...

The synthesis of LaFe1-xAlxO3 (x = 0–0.2) on the structure and electromagnetic properties using co-precipitation method were evaluated. materials synthesized lanthanum chloride natural iron sand powders. mixing process precursors was held with a hotplate temperature 60 °C. calcination done at 400 °C for 2 h. Then samples analyzed X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Vibrating Sample Magnetometer (VSM), CV meter. XRD patterns result in two phases LaFeO3 Fe2O3. SEM...

In this study, the increase in calcination temperature of SrFe12O19 synthesized from local iron sand Lombok Island-Indonesia was evaluated. using co-precipitation method with variations 900 to 1200 °C. The microstructure, morphology, and magnetic properties were analyzed X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), vibrating sample magnetometer (VSM). results showed that hexaferrite phase formed all samples. morphology shows tends agglomerate average...

Nanotechnological development is a concern of scientists and researchers. Especially nanotechnology in the material not to produce particle size nanometers, but make utilize properties new material. This research will nanomaterial rGO/Fe3O4 used co-precipitation method that synthesized based on natural iron sand. Graphene (rGO) nature sand with ratio 0 (50:50) wt% as main precursor. precursor dissolved into 50 mL aqua dest stirred for 30 min until solution becomes homogeneous. The...

Synthesis of glucose coated Fe3O4 magnetic nanoparticles have been successfully prepared with co-precipitation method. Raw material natural iron-sand was obtained from Buaya River, Deliserdang, Indonesia. The milled dissolved in HCl (37 mole %), and stirred 300 rpm at 70°C for 90 minutes. Glucose added to the filtered powder varied content 0.01, 0.02, 0.03 mole, precipitated by NH3 (25 mole%). After drying process, final product subsequently magnetite (Fe3O4) nanoparticles. characterizations...

The magnetic material of Manganese Ferrite (MnFe2O4) based on natural Iron sand have been successfully prepared by using co-precipitation method. sand, MnCl2.4H2O, HCl and NH4OH were used as raw materials to synthesize the MnFe2O4. synthesis was carried out at various temperatures 70, 100 130°C, respectively. physical properties samples analysed X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) Vibrating Sample Magnetometer (VSM). diffraction pattern indicates that MnFe2O4 is...

Zn0.98Mn0.02O material was synthesized from ZnO and MnO2 powders using solid state reaction method. The microstructure, electrical magnetic properties of were studied as a function sintering temperature. X-ray diffraction analysis indicates that the main phase sample is composed hexagonal wurtzite phase. While secondary ZnMnO3 found at temperature 700°C 900°C. measurement revealed resistivity dielectric constant samples increase with ferromagnetic room observed in sintered 500°C 700°C. It...