scholarly journals Synthesis and Characterization of Soft Magnetic Materials NixZn1-xFe2O4 (x = 0,2 – 0,8) Lombok Iron Sand with Co-precipitation Method

2021 ◽  
Vol 3 (1) ◽  
pp. 21-28
Author(s):  
Nining S Asri
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Physical Properties ◽  
Nickel Content ◽  
Average Particle Size ◽  
Precipitation Method ◽  
Average Particle ◽  
True Density ◽  
Soft Magnetic ◽  
Co Precipitation

The synthesis of soft magnetic NixZn1-xFe2O4 with variations in composition (x = 0,2 – 0,8) by the co-precipitation method has been carried out. The research objective was to determine the effect of x variation on the crystal structure, microstructure, magnetic properties, and density. The samples were characterized by their crystal structure using XRD, microstructure using FE-SEM, magnetic properties using VSM, and physical properties (True Density). The XRD analysis results obtained two phases, the major phase is nickel-zinc ferrite, and Fe2O3 shows as the minor phase. The crystal size increased and the lattice parameters decreased with the increase in nickel content. The results of FE-SEM analysis at x = 0.2 are spherical in shape with an average particle size found about 47.07 nm. The results of VSM analysis showed that the increase in nickel content, the higher the magnetization saturation value, and the super-paramagnetic properties of all samples obtained. The results of the analysis of physical properties show that true density decreases with an increase of nickel content in each sample.

scholarly journals Fabrication and Magnetic Properties of Mn1 - xZnxFe2O4 (0 ≤ x ≤ 0.8) Nanoparticles

2009 ◽  
Vol 19 (1) ◽  
pp. 19-25
Author(s):  
Pham Hoai Linh ◽  
Tran Dang Thanh ◽  
Do Hung Manh ◽  
Nguyen Chi Thuan ◽  
Le Van Hong ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Biomedical Applications ◽  
Spinel Ferrite ◽  
Average Particle Size ◽  
Precipitation Method ◽  
Average Particle ◽  
Promising Candidate ◽  
Zn Concentration ◽  
Co Precipitation ◽  
Curie Temperature Tc

In this paper, we report results on the fabrication and magnetic properties of spinel ferrite Mn1-xZnxFe2O4 (0 ≤ x ≤ 0.8) nanoparticles. The nanoparticles were synthesized by a co-precipitation method. The effects of substituting Zn for Mn on the magnetic properties and particles size were focused. It was found that the phase-formation temperature is 90OC and the average particle size decreases from 40 nm to 10 nm when increased Zn concentration from zero to 0.8. The Curie temperature TC strongly decreases from 585 K (x = 0) to 320 K (x = 0.8) concomitantly with a decrease of the saturation magnetization MS. With a TC of 320 K and MS of 17 emu/g, the x=0.8 sample could be a promising candidate for some biomedical applications.

scholarly journals Crystal Structure and Magnetic Properties of Zn Doped Barium M-Hexaferrite

2015 ◽  
Vol 1112 ◽  
pp. 19-22
Author(s):  
Umi Nuraini ◽  
Lita Amalia ◽  
Kurniawati C. Rosyidah ◽  
M. Zainuri
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Peak Position ◽  
Hexagonal Structure ◽  
Precipitation Method ◽  
Soft Magnetic ◽  
A Value ◽  
Coercivity Field ◽  
Co Precipitation ◽  
Slight Displacement

Synthesis of Zn doped Barium M-Hexaferrite (BaFe12-xZnxO19) has been performed by co-precipitation method. The purified iron sand from Tulungagung is used as a precursor of Fe3O4. Synthesis of Zn doped Barium M-Hexaferrite (BaFe12-xZnxO19) with variations of x = 0.3, 0.5, and 0.7 wt % has been calcined at temperatures of 1000°C for 5 hours. Ion Zn2+ (with 0 ≤ x ≤ 0.7 wt %) does not change the crystal structure of Barium M-Hexaferrite (BaM), but give a slight displacement of the peak position of the diffraction pattern. SEM figures showed that Zn doped Barium M-Hexaferrite (BaFe12-xZnxO19) have a hexagonal structure, similar to BaM structure. Doping of Zn has changed the magnetic properties of Barium M-Hexaferrit (BaM), from hard magnetic become soft magnetic. Barium M-Hexaferrit (BaM) has a value of Coercivity Field (Hc) and Remanence Magnetization (Mr) is 0.03734 T and 8.334 emu/g. At variation x = 0.3, the Remanence Magnetization (Mr) reaches the highest value. At this point, a value of Coercivity Field (Hc) and Remanence Magnetization (Mr) is 0.0506 T and 14.782 emu/gram respectively.

Crystal structure and magnetic properties of Gd–Cu substituted M-type Sr-hexaferrites synthesized by the co-precipitation method

2019 ◽  
Vol 546 (1) ◽  
pp. 48-56
Author(s):  
Ze Wu ◽  
Yang Song ◽  
Ruonan Zhang ◽  
Lianwei Shan ◽  
Limin Dong ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Precipitation Method ◽  
Co Precipitation

Morphology-Controlled CaCO3 Nanostructures by Modified Co-Precipitation in Pulsed Mode

2015 ◽  
Vol 752-753 ◽  
pp. 148-153
Author(s):  
M.M. Nassar ◽  
Taha Ebrahiem Farrag ◽  
M.S. Mahmoud ◽  
Sayed Abdelmonem
Keyword(s):  
Particle Size ◽  
Calcium Carbonate ◽  
Rotation Speed ◽  
Average Particle Size ◽  
Calcium Nitrate ◽  
Precipitation Method ◽  
Average Particle ◽  
X Ray ◽  
Co Precipitation ◽  
Pulsed Mixing

Calcium carbonate nanoparticles and nanorods were synthesized by precipitation from saturated sodium carbonate and calcium nitrate aqueous solutions through co precipitation method. A new rout of synthesis was done by both using pulsed mixing method and controlling the addition of calcium nitrate. The effect of the agitation speed, and the temperature on particle size and morphology were investigated. Particles were characterized using X-ray Microanalysis, X-ray analysis (XRD) and scanning electron microscopy (SEM). The results indicated that increasing the mixer rotation speed from 3425 to 15900 (rpm) decreases the average particle size to 64±7 nm. A rapid nucleation then aggregation induced by excessive shear force phenomena could explain this observation. Moreover, by increasing the reaction temperature, the products were converted from nanoparticle to nanorods. The maximum attainable aspect ratio was 6.23 at temperature of 75°C and rotation speed of 3425. Generally, temperature raise promoted a significant homoepitaxial growth in one direction toward the formation of calcite nanorods. Overall, this study can open new avenues to control the morphology of the calcium carbonate nanostructures.

Crystal structure and magnetic properties of LaFe1-Ni O3 nanomaterials prepared via a simple co-precipitation method

2019 ◽  
Vol 45 (17) ◽  
pp. 21768-21772 ◽  
Author(s):  
Tien A. Nguyen ◽  
Vinh N.T. Pham ◽  
Hanh T. Le ◽  
Diem H. Chau ◽  
V.O. Mittova ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Precipitation Method ◽  
Co Precipitation

Effect of Surfactant on the Preparation of Nano-powder for Yb Doping Laser Transparent YAG Ceramic

2013 ◽  
Vol 32 (5) ◽  
pp. 511-515 ◽  
Author(s):  
Xiao Guo Cao ◽  
Jia Wang ◽  
Qi Bai Wu ◽  
Hai Yan Zhang
Keyword(s):  
Particle Size ◽  
Polyethylene Glycol ◽  
Average Particle Size ◽  
Ammonium Bicarbonate ◽  
Spherical Particles ◽  
Precipitation Method ◽  
Average Particle ◽  
X Ray Diffraction ◽  
Nano Powder ◽  
Co Precipitation

AbstractYb:YAG transparent ceramic nano-powder was prepared by chemical co-precipitation method, with ammonium bicarbonate as the precipitant and polyethylene glycol as surfactant. The addition of polyethylene glycol can reduce the agglomeration and particle size of the prepared Yb:YAG powder. The morphology, thermal stability and phase structure of Yb:YAG nano-powder were charactered by scanning electron microscopy (SEM), thermogravimetry and differential thermal analysis (TG-DTA), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy. The results show that well-crystallized nano-powder was obtained by calcining the precursors at 900 °C for 3 h. The average particle size of Yb:YAG powder is about 100–200 nm. When the volume amount of polyethylene glycol is 2.0%, well-dispersed Yb:YAG powder with spherical particles of 100 nm diameter was obtained.

scholarly journals Study Microstructure of Fe3O4 Modification Using PEG 4000 form Iron Sand at Wari Ino Beach As A Biosensor Application

2021 ◽  
Vol 8 (3) ◽  
pp. 168-171
Author(s):  
Kurnia Kurnia ◽  
Meidy Kaseside ◽  
Steven Iwamony
Keyword(s):  
Average Particle Size ◽  
Precipitation Method ◽  
High Dispersion ◽  
Average Particle ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
Peg 4000 ◽  
Biosensor Application ◽  
Scherrer Formula ◽  
Co Precipitation

Fe3O4 encapsulated PEG form iron sand at wari ino beach has been successfully synthesized by co-precipitation method. The average particle size  of the nanoparticle 11,3 nm was determined by scherrer formula. Fe3O4 modification PEG 4000 was successfully encapsulated the samples  by the presence C-O-C and CH bonding that were characterized using Fourier Transform Infra Red (FTIR), X-Ray Diffraction (XRD) pattern  shows that all samples  are formed by single  phase cubic spinel magnetite  , and Scanning Electron Microscopy (SEM) shows the  high dispersion capability while encapsulated process using  PEG. The results of the characterization show that the Fe3O4 successfully encapsulated by PEG 4000.

Crystal structure and magnetic properties of perovskite YFe1-xMnxO3 nanopowders synthesized BY CO-PRECIPITATION method

2019 ◽  
Vol 96 ◽  
pp. 105922 ◽  
Author(s):  
A.T. Nguyen ◽  
Vinh N.T. Pham ◽  
T. Tr L. Nguyen ◽  
V.O. Mittova ◽  
Q.M. Vo ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Precipitation Method ◽  
Co Precipitation

Exploring the interaction of l-cysteine capped CuS nanoparticles with bovine serum albumin (BSA): a spectroscopic study

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58288-58295 ◽  
Author(s):  
S. Prasanth ◽  
D. Rithesh Raj ◽  
T. V. Vineeshkumar ◽  
Riju K. Thomas ◽  
C. Sudarsanakumar
Keyword(s):  
Particle Size ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Copper Sulfide ◽  
Average Particle Size ◽  
Precipitation Method ◽  
Average Particle ◽  
Spectroscopic Techniques ◽  
Co Precipitation

l-Cysteine capped copper sulfide nanoparticles with an average particle size of 6 nm were synthesized using a chemical co-precipitation method and their interactions with bovine serum albumin were explored using various spectroscopic techniques.

Preparation of Nanostructured Metal Ferrite Particles by Sonochemistry

2005 ◽  
Vol 277-279 ◽  
pp. 1044-1048 ◽  
Author(s):  
Eun Hee Kim ◽  
Hyo Sook Lee ◽  
Hui Ping Shao
Keyword(s):  
Magnetic Field ◽  
Particle Size ◽  
Cobalt Ferrite ◽  
Average Particle Size ◽  
Iron Chloride ◽  
Precipitation Method ◽  
Average Particle ◽  
Sonochemical Method ◽  
Iron Ferrite ◽  
Co Precipitation

Nanostructured iron and cobalt ferrite particles were prepared from iron chloride and cobalt chloride, respectively, using the sonochemical method. The particles were compared with those synthesized using the co-precipitation method. The properties of the particles were characterized using various techniques, such as XRD, TEM, VSM and a SQUID magnetometer. The iron ferrite particles had an average particle size of about 15 nm and a magnetization value of 83 emu/g at a magnetic field of 50 kOe, while the particle size of cobalt ferrite was about 5 nm and its magnetization value was 33 emu/g at the same magnetic field.

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