scholarly journals Effects of Annealing under Tensile Stress on the Magnetic Properties of FeSiB Amorphous Magnetic Material

2019 ◽  
Vol 27 (3) ◽  
pp. 329-334
Author(s):  
Isshin UESUGI ◽  
Takeru SATO ◽  
Takashi TODAKA
Keyword(s):  
Magnetic Material ◽  
Magnetic Properties ◽  
Tensile Stress ◽  
Amorphous Magnetic Material

Magnetic properties of FeCuNbSiB nanocrystallized by flash annealing under high tensile stress

2011 ◽  
Vol 248 (10) ◽  
pp. 2382-2388 ◽  
Author(s):  
Giselher Herzer ◽  
Viktoria Budinsky ◽  
Christian Polak
Keyword(s):  
Magnetic Properties ◽  
Tensile Stress ◽  
Flash Annealing

scholarly journals In Search of Magnetic Properties of Samarium Cobalt (Sm2Co17) within a Low-Temperature Sintering Process

2021 ◽  
Vol 16 (3) ◽  
pp. 517-524
Author(s):  
Poppy Puspitasari ◽  
A. Muhammad ◽  
A. A. Permanasari ◽  
T. Pasang ◽  
S. M. S. N. S. Zahari ◽  
...  
Keyword(s):  
Magnetic Material ◽  
Magnetic Properties ◽  
Low Temperature ◽  
Functional Groups ◽  
Sintering Temperature ◽  
Alkyl Halides ◽  
High Coercivity ◽  
Low Temperature Sintering ◽  
Magnetic Anisotropy Energy ◽  
Low Sintering Temperature

Samarium cobalt is known as super high density magnetic material with large magnetic anisotropy energy. Samarium–cobalt exhibits manipulative magnetic properties as a rare-earth material which has different properties in a low sintering temperature. It is therefore of paramount importance to investigate samarium cobalt (Sm2Co17) magnetic properties in the low temperature sintering condition. Sm2Co17, which is utilized in this research, is synthesized via the sol–gel process at sintering temperatures of 400, 500, and 600 °C. Subsequently, the crystallites indicate the formation of a single-phase Sm2Co17 on all the samples in all temperature variations. Moreover, the peaks in the X-ray diffraction analysis of crystallite sizes calculated using the Scherrer equation are 17.730, 15.197, and 13.296 nm at 400, 500, and 600 °C. Through scanning electron microscopy, the particles are found to be relatively large and agglomerated, with average sizes of 143.65, 168.78, and 237.26 nm. The functional groups are also analyzed via Fourier-transform infrared spectroscopy, which results in the appearance of several bonds in the samples, for example, alkyl halides, alkanes, and esters with aromatic functional groups on the fingerprint area and alkynes, alkyl halides, and alcohol functional groups at a wavelength of above 1500 cm. The test results of the magnetic properties using vibrating-sample magnetometer (VSM) revealed high coercivity and retentivity in the samples sintered at 400 °C. However, the highest saturation occurs in the samples sintered at 600 ℃. At a low sintering temperature (below 1000 °C), samarium cobalt shows as the soft magnetic material. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 

Effects of geomagnetism and residual magnetism on single sheet testers for amorphous magnetic material

1996 ◽  
Vol 160 ◽  
pp. 177-179 ◽  
Author(s):  
T. Nakata ◽  
M. Nakano ◽  
K. Fujiwara ◽  
K. Muramatsu ◽  
H.L. Zhu ◽  
...  
Keyword(s):  
Magnetic Material ◽  
Single Sheet ◽  
Amorphous Magnetic Material ◽  
Residual Magnetism

Effect of Lanthanum Substituted CoFe2-xLaxO4 on Change of Structure Parameter and Phase Formation

2020 ◽  
Vol 855 ◽  
pp. 70-77
Author(s):  
Akmal Johan ◽  
Ari Adi Wisnu ◽  
Fitri Suryani Arsyad ◽  
Dedi Setiabudidaya
Keyword(s):  
Magnetic Material ◽  
Magnetic Properties ◽  
Electromagnetic Waves ◽  
Earth Metal ◽  
Particle Morphology ◽  
Metal Elements ◽  
Elementary Analysis ◽  
Resonance Domain ◽  
Orbital Configuration ◽  
Absorbing Material

In this research, CoFe2-xLaxO4-based smart magnetic material has been developed which will be applied as a microwave absorbing material. This smart magnetic material is an artificial advanced material which has properties such as electromagnetic waves so that it is able to respond to the presence of microwaves through the mechanism of spin electron resonance and wall resonance domain. This smart magnetic material consists of a combination of rare earth metal elements (spin magnetic in the f orbital configuration) and transition metal elements (spin magnetic in the d orbital configuration) with a semi-hard magnetic structure. This semi-hard is a characteristic of magnetic properties which is between hard magnetic and soft magnetic properties. This characteristic of the semi-hard magnetic properties is needed so that this material has the ability to absorb microwaves. Substitution of lanthanum into cobalt ferrite CoFe2-xLaxO4 for La3+ (x = 0 - 0.8) has been synthesized using the solid reaction method through mechanical deformation techniques. The refinement result of X-ray diffraction shows that the sample contains 2 phases with increasing of x compositions. Particle morphology and elementary analysis were observed respectively by using a scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). It was concluded that the effect of La substitution on CoFe2-xLaxO4 resulted in changes in the crystal structure parameters and phase transformation as a function of composition.

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