Effect of heating conditions on the magnetic properties of micron-sized carboxyl modified-magnetite particles synthesized by a spray pyrolysis and heating process

2022 ◽  
pp. 103412
Author(s):  
Masami Hashimoto ◽  
Seiji Takahashi ◽  
Koichi Kawahara ◽  
Tomoyuki Ogawa ◽  
Masakazu Kawashita
Keyword(s):  
Magnetic Properties ◽  
Spray Pyrolysis ◽  
Heating Process ◽  
Magnetite Particles

scholarly journals Structural, Magnetic, and X-Band Microwave Absorbing Properties of Ni-Ferrites Prepared Using Oxidized Mill Scales

2021 ◽  
Vol 21 (1) ◽  
pp. 27
Author(s):  
Ardita Septiani ◽  
Novrita Idayanti ◽  
Tony Kristiantoro ◽  
Dedi Mada ◽  
Nadya Larasati Kartika ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Phase ◽  
Raw Materials ◽  
Energy Dispersive Spectrometer ◽  
Milling Process ◽  
Microwave Properties ◽  
Heating Process ◽  
Microwave Absorbing Properties ◽  
X Band ◽  
Microwave Absorbing

This study aims to evaluate the structural, magnetic, and microwave absorbing properties at the X-band region of oxidized mill scales as by-product derived from a steel making process by means of a facile solid-state reaction. The oxidized mill scales were heated at 600 °C for 4 h followed by mixing with NiO. A calcination process took place at 900 °C and sintering process were conducted at 1260 °C with a milling process conducted in between the heating process. X-ray diffraction (XRD) and scanning electron microscope (SEM) equipped with energy dispersive spectrometer (EDS) were employed to evaluate the structural properties of the Ni-ferrites samples. Remacomp measurement were conducted to evaluate the magnetic properties and vector network analyzer (VNA) to measure its microwave properties. A single phase of NiFe2O4 was confirmed by XRD data. The site occupancies derived from the Rietveld refinement shows that the Ni:Fe:O ratio deviates from the 1:2:4 ratio as that suggests vacancies formed in the Ni2+ and Fe3+ that lowers the unit cell density to 5.08 g/cm3 that further confirmed by EDS measurement. The coercivity of 11 kOe is also higher than the bulk NiFe2O4¬ prepared by the chemical grade raw materials. The reflection data of the microwave properties at X-band of 8-12 GHz do not shows significant absorptions. This study suggests that the selected preparation method yields a single phase, however with the significant crystallographic defects and has less ‘soft’ magnetic properties compared to NiFe2O4 prepared using chemical grade by previous study.

Structural, optical and magnetic properties of Cr doped ZnO microrods prepared by spray pyrolysis method

2011 ◽  
Vol 257 (22) ◽  
pp. 9293-9298 ◽  
Author(s):  
S. Yılmaz ◽  
M. Parlak ◽  
Ş. Özcan ◽  
M. Altunbaş ◽  
E. McGlynn ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method ◽  
Optical And Magnetic Properties ◽  
Doped Zno

Optical, electrical and magnetic properties of fiber structure Zn0.99Mn0.01O films prepared by spray pyrolysis

2018 ◽  
Vol 655 ◽  
pp. 83-94 ◽  
Author(s):  
H.S. Sindhu ◽  
B.V. Rajendra ◽  
Suresh D. Kulkarni ◽  
P.D. Babu
Keyword(s):  
Magnetic Properties ◽  
Spray Pyrolysis ◽  
Fiber Structure ◽  
Electrical And Magnetic Properties

Structural and magnetic properties of nanocrystalline NiFe2O4 thin film prepared by spray pyrolysis technique

2018 ◽  
Author(s):  
Apparao R. Chavan ◽  
R. R. Chilwar ◽  
M. V. Shisode ◽  
Mahesh M. Hivrekar ◽  
V. K. Mande ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetic Properties ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Structural And Magnetic Properties

Structure and magnetic properties of manganese–zinc-ferrites prepared by spray pyrolysis method

2015 ◽  
Vol 39 ◽  
pp. 69-73 ◽  
Author(s):  
Dzmitry Kotsikau ◽  
Maria Ivanovskaya ◽  
Vladimir Pankov ◽  
Yulia Fedotova
Keyword(s):  
Magnetic Properties ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Method ◽  
Manganese Zinc ◽  
Pyrolysis Method ◽  
Manganese Zinc Ferrites

Study of Magnetic Properties in Electron Doped Superconductor Eu2-xCexCuO4+α

2019 ◽  
Vol 966 ◽  
pp. 314-318 ◽  
Author(s):  
Yati Maryati ◽  
Nuráini Nafisah ◽  
Diba G. Auliya ◽  
Eka Nurwati ◽  
Tiara Amalia ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Heating Process ◽  
Reaction Method

Electron-doped superconductors Eu2-xCexCuO4+α with x = 0.11, 0.13, 0.15, 0.17 and 0.19 have been synthesized using solid-state reaction method. The purpose of this research is to study the effect of covering treatment to its magnetic properties. The samples were covered by CuO to prevent the excess of oxygen in sample during heating process. All samples were characterized by susceptibility measurement to study the magnetic properties of Eu2-xCexCuO4+α. The trace of superconductivity was observed in the samples with x = 0.15 and 0.17.

Synthesis and magnetic properties of Sm2Co17 particles using salt-assisted spray pyrolysis and a reduction-diffusion process

2019 ◽  
Vol 475 ◽  
pp. 986-989 ◽  
Author(s):  
Tae-Yeon Hwang ◽  
Jimin Lee ◽  
Min Kyu Kang ◽  
Gyutae Lee ◽  
Jongryoul Kim ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Diffusion Process ◽  
Spray Pyrolysis

Barium hexaferrite nanoparticles with high magnetic properties by salt-assisted ultrasonic spray pyrolysis

2014 ◽  
Vol 583 ◽  
pp. 145-150 ◽  
Author(s):  
Guk-Hwan An ◽  
Tae-Yeon Hwang ◽  
Jongryoul Kim ◽  
JinBae Kim ◽  
Namseok Kang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Barium Hexaferrite ◽  
Ultrasonic Spray
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