Mössbauer spectroscopy, magnetic characteristics, and reflection loss analysis of nickel-strontium substituted cobalt ferrite nanoparticles

2014 ◽  
Vol 115 (17) ◽  
pp. 17A522 ◽  
Author(s):  
Ali Ghasemi ◽  
Andrea Paesano ◽  
Carla Fabiana Cerqueira Machado ◽  
Sagar E. Shirsath ◽  
Xiaoxi Liu ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Reflection Loss ◽  
Cobalt Ferrite ◽  
Mossbauer Spectroscopy ◽  
Ferrite Nanoparticles ◽  
Magnetic Characteristics ◽  
Cobalt Ferrite Nanoparticles ◽  
Loss Analysis ◽  
Mößbauer Spectroscopy

Mössbauer spectroscopy and magnetic characteristics of Zn1−xCoxFe2O4 (x = 0−1) nanoparticles

2011 ◽  
Vol 109 (7) ◽  
pp. 07A512 ◽  
Author(s):  
Ali Ghasemi ◽  
Vladimir Šepelák ◽  
Sagar E. Shirsath ◽  
Xiaoxi Liu ◽  
Akimitsu Morisako
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Magnetic Characteristics ◽  
Mößbauer Spectroscopy

scholarly journals Magnetism and Microstructure Characterization of Phase Transitions in a Steel

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
M. Güler
Keyword(s):  
Mössbauer Spectroscopy ◽  
Phase Transitions ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Mossbauer Spectroscopy ◽  
Low Carbon Steel ◽  
Magnetic Characteristics ◽  
Low Carbon ◽  
Mößbauer Spectroscopy ◽  
Scanning Electron

We present phase transitions in a low carbon steel according to existing phases and their magnetism. Scanning electron microscope employed research to clarify and evaluate the microstructural details. Additionally, we utilized from Mössbauer spectroscopy for magnetic characteristics of different existed phases. Scanning electron microscope examinations showed that the pure state of the steel was fully in the ferrite phase with equiaxed grains. Moreover, subsequent heat treatments on the studied steel also ensured the first austenite and then pearlite phase formation. Mössbauer spectroscopy of these phases appeared as a paramagnetic single-line absorption peak for the austenite phase and ferromagnetic six-line spectra for both ferrite and pearlite phases. From Mössbauer data, we determined that the internal magnetic fields of ferrite and pearlite phases were as 32.2 Tesla and 31.3 Tesla, respectively.

scholarly journals Synthesis, Characterization, and Magnetic Behavior of Cobalt-Ferrite Nanoparticles under Variant Temperature Conditions

2021 ◽  
Vol 63 (4) ◽  
pp. 513
Author(s):  
M.A. Alotaibi ◽  
I. Ud Din ◽  
A.I. Alharthi ◽  
P. Ahmad ◽  
A. Naeem ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Cobalt Ferrite ◽  
Analytical Techniques ◽  
Magnetic Behavior ◽  
Ferrite Nanoparticles ◽  
Magnetic Characteristics ◽  
X Ray ◽  
Synthesis Of Nanoparticles ◽  
Cobalt Ferrite Nanoparticles ◽  
Morphological Studies

Wet chemical method was applied for the synthesis of cobalt-ferrite nanoparticles. The physicochemical properties were investigated by number of analytical techniques. TGA revealed the thermal stability of synthesized cobalt-ferrite nanoparticles. X-ray diffraction studies displayed the nanoparticles crystalline nature. Structure of cobalt-ferrite nanoparticles was confirmed via infrared spectroscopy by manifesting Co and Fe ions absorption peaks. Morphological studies showed synthesis of nanoparticles of cobalt-ferrite by employing field emissions scanning electron microscopy. The magnetic properties of cobalt-ferrite nanoparticles were investigated by vibrating sample magnetometer (VSM). The X-ray photoelectron spectroscopy studies confirmed the synthesis of cobalt-ferrite by displaying the oxidation of Co as Co2+ and Fe as Fe3+, respectively. The VSM results revealed that the magnetic characteristics of cobalt-ferrite nanoparticles were completely changed by the variation of temperature. Keywords: ferrite nanoparticles, VSM, temperature effect, magneton number, anisotropy constant.

Mechanosynthesis of spinel ferrite nanoparticles followed by Mössbauer spectroscopy

2006 ◽  
Vol 165 (1-4) ◽  
pp. 81-87 ◽  
Author(s):  
V. Šepelák ◽  
I. Bergmann ◽  
A. Feldhoff ◽  
P. Heitjans ◽  
F. J. Litterst ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Spinel Ferrite ◽  
Ferrite Nanoparticles ◽  
Mößbauer Spectroscopy
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