scholarly journals The Physical Properties of Erbium-Doped Yttrium Iron Garnet Films Prepared by Sol-Gel Method

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Ramadan Shaiboub ◽  
Noor Baa'yah Ibrahim ◽  
Mustafa Abdullah ◽  
Ftema Abdulhade
Keyword(s):  
Single Phase ◽  
Sol Gel ◽  
Vibrating Sample Magnetometer ◽  
Yttrium Iron ◽  
X Ray ◽  
Garnet Films ◽  
Erbium Doped ◽  
Gel Technique ◽  
Xrd Patterns ◽  
Iron Garnet

ErxY3-xFe5O12nanoparticle films (x=0.0, 0.6, 1.2, 2.0, and 2.5) have been synthesized by a sol-gel technique. All of the samples were annealed at 1000°C. The nanostructures were characterized by an X-ray diffractometer (XRD), the magnetic properties and the grain size were studied using a vibrating sample magnetometer (VSM), and a field emission scanning electron microscope (FE-SEM), respectively. The XRD patterns of the films show single phase structure. The sizes of the particles are in the range of 78 to 89 nm. The VSM result shows that the saturation magnetization ofErxY3-xFe5O12films decreased with the increment of Er concentration (x).

scholarly journals Characterization of Erbium Substituted Yttrium Iron Garnet Films Prepared by Sol-Gel Method

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Ramadan E. Shaiboub ◽  
N. B. Ibrahim
Keyword(s):  
Yttrium Iron Garnet ◽  
Sol Gel ◽  
Yttrium Iron ◽  
Gel Method ◽  
Sol Gel Method ◽  
Erbium Ions ◽  
Garnet Films ◽  
Different Temperatures ◽  
Xrd Patterns ◽  
Iron Garnet

Yttrium iron garnet (YIG) thin films substituted erbium ions (Er+3) Er0.4Y2.6Fe5O12 films were prepared by a sol-gel method at different temperatures which varied from 800 to 1000°C for 2 hours in air. Magnetic and microstructural properties of the films were characterized with X-ray diffraction (XRD), the field emission scanning electron microscopy (FESEM), and vibrating sample magnetometer (VSM). The XRD patterns of the sample have only peaks of the garnet structure. The lattice constants decrease, while the particle size increases from 51 to 85 nm as the annealing temperature increases with average in thickness of 300 nm. The saturation magnetization and the coercivity of the samples increased from 26 (emu/cc) and 28 Oe for the film annealed at 800°C to 76 (emu/cc) and 45 Oe for film annealed at 1000°C, respectively.

Study on optical and magnetic properties of FexNi1-xMn2O4 materials

2021 ◽  
Vol 66 (1) ◽  
pp. 57-64
Author(s):  
Hang Pham Vu Bich ◽  
Yen Nguyen Hai ◽  
Mai Phung Thi Thanh ◽  
Dung Dang Duc ◽  
Hung Nguyen Manh ◽  
...  
Keyword(s):  
Single Phase ◽  
Sol Gel ◽  
Vibrating Sample Magnetometer ◽  
Raman Scattering Spectrum ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scattering Spectrum ◽  
Diffraction Diagram ◽  
Optical And Magnetic Properties ◽  
Scanning Electron

In this study, we present the process of synthesis FexNi1-xMn2O4 (x = 0; 0.1; 0.3; 0.5; 0.7; 0.9; 1) by method sol-gel. Scanning electron microscope results shows that the particle size is about 50 nm. The X-ray diffraction diagram shows that the samples are single phase, changing structure clearly as the x ratio increases from 0 to 1. The lattice constant, the bond length also changes with x-value as shown on the Raman scattering spectrum. The results of the vibrating sample magnetometer show that the magnetism of the material FexNi1-xMn2O4 changes with the value of x and reaches a maximum in the range x from 0.5 to 0.7.

scholarly journals Fabrication and Characterization of CoFe2O4/CoFe2/SiO2 Nanocomposite Particles

2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Tran Thi Viet Nga
Keyword(s):  
Magnetic Properties ◽  
Single Phase ◽  
Sol Gel ◽  
Calcination Time ◽  
Nanocomposite Particles ◽  
X Ray ◽  
Fabrication And Characterization ◽  
Xrd Patterns ◽  
20 Nm

The CoFe2O4/CoFe2/SiO2 nanocomposite particles were synthesized using a sol- gel method and calcination in hydrogen. The magnetic properties and structure of nanocomposite particles calcinated at 600 oC and 900 oC in range of calcination time from 1 h to 4 h were investigated. The phase composition, surface morphology and magnetic properties of the nanocomposites were investigated using X-ray powder diffraction, scanning electron microscopy and vibrating sample magnetometer. The XRD patterns indicate the existence of both CoFe2O4 and CoFe2 phases in the nanocomposite after reducing at 600 oC for 2 h and 3 h. The single phase CoFe2 was obtained after reducing at 900 oC. The average particles size was evenly distributed in the range of 20 nm to 120 nm. The magnetization increases significantly with increasing of reduction temperature.

Magnetic behavior of Ga doped yttrium iron garnet ferrite thin films deposited by sol-gel technique

2020 ◽  
Vol 46 (17) ◽  
pp. 27318-27325
Author(s):  
M.I. Khan ◽  
Muhammad Waqas ◽  
M.A. Naeem ◽  
M.S. Hasan ◽  
Munawar Iqbal ◽  
...  
Keyword(s):  
Thin Films ◽  
Yttrium Iron Garnet ◽  
Sol Gel ◽  
Magnetic Behavior ◽  
Yttrium Iron ◽  
Garnet Ferrite ◽  
Gel Technique ◽  
Ferrite Thin Films ◽  
Iron Garnet

Sol-Gel Derived Ferrites: Synthesis and Characterization

2011 ◽  
Vol 222 ◽  
pp. 235-238 ◽  
Author(s):  
Aurelija Gatelyte ◽  
Darius Jasaitis ◽  
Aldona Beganskiene ◽  
Aivaras Kareiva
Keyword(s):  
Transition Metal ◽  
Yttrium Iron Garnet ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Ceramic Pigments ◽  
X Ray Diffraction ◽  
Yttrium Iron ◽  
X Ray ◽  
Cobalt Nickel ◽  
Iron Garnet

In the present work, the sinterability and formation of nanosized yttrium iron garnet (Y3Fe5O12), yttrium perovskite ferrite (YFeO3), cobalt, nickel and zinc iron spinel (CoFe2O4, NiFe2O4 and ZnFe2O4, respectively) powders by an aqueous sol-gel processes are investigated. The phase purity of synthesized nano-compounds was characterized by powder X-ray diffraction analysis (XRD). The microstructural evolution and morphological features of obtained transition metal ferrites were studied by scanning electron microscopy (SEM). The possible application of these nanosized transition metal ferrites as ceramic pigments was demonstrated.

Element selective X-ray magnetic circular and linear dichroisms in ferrimagnetic yttrium iron garnet films

2009 ◽  
Vol 321 (23) ◽  
pp. 3945-3962 ◽  
Author(s):  
A. Rogalev ◽  
J. Goulon ◽  
F. Wilhelm ◽  
Ch. Brouder ◽  
A. Yaresko ◽  
...  
Keyword(s):  
Yttrium Iron Garnet ◽  
Yttrium Iron ◽  
X Ray ◽  
Garnet Films ◽  
Iron Garnet

Study of the magnetic and structural properties of Al–Cr codoped Y-type hexaferrite prepared via sol–gel auto-combustion method

2015 ◽  
Vol 29 (14) ◽  
pp. 1550090 ◽  
Author(s):  
O. Mirzaee ◽  
R. Mohamady ◽  
A. Ghasemi ◽  
Y. Alizad Farzin
Keyword(s):  
Magnetic Properties ◽  
Sol Gel ◽  
Combustion Method ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hexagonal Shape ◽  
Auto Combustion ◽  
Xrd Patterns ◽  
Cr Doping

Nanostructure of Y-type hexaferrite with composition of Sr 2 Ni 2 Al x/2 Cr x/2 Fe 12-x O 22 (where x are 0, 0.6, 1.2, 1.8, 2.4 and 3) were prepared by sol–gel auto-combustion method. The influence of Al and Cr doping on the structural and magnetic properties has been investigated. The X-ray diffraction (XRD) patterns confirm phase formation of Y-type hexaferrite. The microstructure and morphology of prepared samples were studied by high resolution field emission scanning electron microscope (FESEM) which shows the hexagonal shape for all of the samples. Magnetic properties were characterized using vibrating sample magnetometer (VSM). The magnetic results revealed that by increasing the Al and Cr to the structure, the coercivity was also increased from 840 Oe to 1160 Oe. Moreover it has been shown that with addition of dopants, saturation magnetization (Ms) and remnant magnetization (Mr) were decreased from 39.61 emu/g to 30.11 emu/g and from 17.51 emu/g to 14.62 emu/g, respectively, due to the entrance of nonmagnetic ions into Fe 3+ sites.

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