List of Articles Hexaferrite

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  1 - Preparation, Structural and Magnetic Behavior of Sr(AlCr)xFe(12-2x) O19 Hexagonal Ferrites
  Mahboobeh Alimoradi Mohammad Yousefi Babak Sadeghi Mostafa M.Amini Alireza Abbasi
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  2 - Effect of Heat Treatment on Structural and Magnetic Properties of Nanocrystalline SrFe12O19 Hexaferrite synthesized by Co-Precipitation Method
  Mansoureh Ganjali Monireh Ganjali Arvin Eskandari Masoud Aminzare
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  3 - Synthesis of three-component nanocomposite zero-valent iron-strontium hexaferrite-graphene for the removal of ceftriaxone antibiotic from aqueous solution and optimization of conditions using Box Behnken design
  shadan amiri mahmoodreza sohrabi fereshteh motiee
  10.30495/jacr.2021.685676
  In this study, for the first time, zero-valent iron - strontium hexaferrite-graphene nanocomposite was synthesized and it was investigated as an adsorbent for removing ceftriaxone drug from aqueous solution. Synthesized adsorbents were analyzed by scanning electron micr More

  In this study, for the first time, zero-valent iron - strontium hexaferrite-graphene nanocomposite was synthesized and it was investigated as an adsorbent for removing ceftriaxone drug from aqueous solution. Synthesized adsorbents were analyzed by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Response Surface Methodology (RSM) based on Box–Behnken Design (BBD) were used to achieve the optimal experimental conditions. Accordingly, the effects of parameters such as adsorbent dosage (0.05-0.15 g L-1), pH (5-9), and initial concentration of ceftriaxone (5-15 mg L-1) on removal efficiency were investigated. A mathematical model was surveyed to predict the performance of drug removal. The results indicated that the second-order polynomial model is an efficient model for the removal of the intended drug. Finally, the Box–Behnken Design predicted that the adsorbent dosage of 0.15 g L-1, pH =5, and the initial drug concentration of 10 mg L-1 with 99% efficiency was the best condition for the removal of ceftriaxone from the aqueous solution. Manuscript profile
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  4 - Comparative assessment the magnetic properties of barium hexaferrite doped with paramagnetic and diamagnetic cations
  sahebali manafi مجتبی جعفریان محسن صالحی
  in this study, magnetic powders Ba (Mg, Ti)xFe12-2xO19 and Ba (Zn, Cu)xFe12-2xO19 with x=0.5 using mechanical alloying process a high-energy mill was prepared. Continuing a sample of pure powder and two samples doped powder was produced.In order to evaluate the phase, m More

  in this study, magnetic powders Ba (Mg, Ti)xFe12-2xO19 and Ba (Zn, Cu)xFe12-2xO19 with x=0.5 using mechanical alloying process a high-energy mill was prepared. Continuing a sample of pure powder and two samples doped powder was produced.In order to evaluate the phase, morphological and magnetic properties by X-ray diffraction analysis (XRD), field emission scanning electron microscope (FE-SEM) and vibrating sample magnetometer (VSM) was used. X-ray patterns in temperature 1000°C confirming the composition was almost single phase barium hexaferrite. SEM represents a hexagonal plate morphology due to preferential growth of particles in the ab crystallographic directions, respectively. Magnetic studies revealed the presence of diamagnetic ions of zinc and copper in the structure of barium hexaferrite more effective than paramagnetic cations magnesium and titanium saturation magnetization and the coercivity is reduced parameters. high saturation magnetization (53emu/g) of the sample produced composition and the lowest power BaMg0.5Ti0.5Fe11O19 coercivity (50Oe) of the samples were obtained by combining BaZn0.5Cu0.5Fe11O19 Manuscript profile
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  5 - Synthesis and Characterization of SrFe12O19/SiO2/TiO2 Composite Powder with Core/Shell/Shell Nanostructure
  fatemeh bavarsiha Mehdi Montazeri-Pour Masoud Rajabi samira Gholami Naeimeh Mozaffari
  In this research study, the coating of titania particles on the SrFe12O19/SiO2 composite was successfully accomplished by the sol-gel process. For this purpose, first, the strontium hexaferrite particles were prepared by co-precipitation route with Fe3+/Sr2+ molar ratio More

  In this research study, the coating of titania particles on the SrFe12O19/SiO2 composite was successfully accomplished by the sol-gel process. For this purpose, first, the strontium hexaferrite particles were prepared by co-precipitation route with Fe3+/Sr2+ molar ratios of 11 and 12 and subsequent calcination treatment. The formation of single phase strontium hexaferrite particles, as hard magnetic cores of the composite, was attained in the molar ratio of Fe3+/Sr2+=12 after calcination at 950 °C. In the next step, the silica coating of hexaferrite particles was performed using the tetraethyl orthosilicate (TEOS) precursor via the Stöber method. In the end, the covering of titania particles on the SrFe12O19/SiO2 composite was carried out by utilizing titanium n-butoxide (TNBT) precursor. The as-prepared composites were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) and vibrating sample magnetometry (VSM) analyses. The results confirmed the core/shell/shell structure of the synthesized SrFe12O19/SiO2/TiO2 composite. The analysis of the magnetic properties showed that saturation magnetization (Ms) of strontium hexaferrite powder was obtained as 58 emu/g. After the successive coating of SiO2 and TiO2 shells, this amount has reached to 56 emu/g and 37 emu/g, respectively. Manuscript profile
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  6 - Study on phase, structural changes and microwave absorption of magnetic powder with BaZn0.6Zr0.3X0.3Fe10.8O19 (X=Ti,Ce,Sn) composition
  Mohsen Salehi Sahebali Manafi Seyed Salman Seyed Afghahi Mojtaba Jafarian
  In this research, barium hexaferrite samples with BaZn0.6Zr0.3X0.3Fe10.8O19 (X=Ti,Ce,Sn) composition were synthesized via mechanical activation method and were evaluated by X-ray diffraction (XRD), field emission electron microscopy (FE-SEM), vibrating sample magnetomet More

  In this research, barium hexaferrite samples with BaZn0.6Zr0.3X0.3Fe10.8O19 (X=Ti,Ce,Sn) composition were synthesized via mechanical activation method and were evaluated by X-ray diffraction (XRD), field emission electron microscopy (FE-SEM), vibrating sample magnetometer (VSM) and Vector network analysis (VNA). X-ray diffraction results confirmed the present of barium hexaferrite as a dominant phase with small amount of hematite as a non-magnetic phase in the sample compound. Lattice parameters a and c was increased due to the difference between ionic radius of guest and host ions and the largest increases was related to the sample that containing cerium ion. The FE-SEM results confirmed the average particles size of about 450 nm and 250 nm for samples without and with dopant respectively. According to M-H curves the value of saturation magnetization (Ms) and coercive force (Hc) was reduced in all cases and significant changes were observed in magnetic properties of barium hexaferrite with the effect of substitution of Fe ions. According to the results maximum magnetic saturation (33.1 emu/g) and minimum coercivity force (8.14 Oe) were related to samples with composition of BaZn0.6Zr0.3Ti0.3Fe10.8O19 and BaZn0.6Zr0.3Sn0.3Fe10.8O19 respectively. According to the results of microwave absorption in the frequency range of 8-12.4 GHz the maximum absorption was related to the sample with the composition of BaZn0.6Zr0.3Sn0.3Fe10.8O19 at the frequency of 11.1 GHz was -16.3 dB. Manuscript profile
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  7 - Investigation of Electromagnetic Properties and Microwave Absorption of Z-Type HexFerrite with Zinc Substitution
  zinat mirzaei mohammad jazirehpour ahmad poorbafrani
  In this research, the effect of different substitution quantities of zinc cations on electromagnetic and microwave absorption properties of Z-type barium hexaferrite with chemical composition of Ba3Co2-xZnxFe24O41 (x=0, 1.2, 1.3, 1.4, 1.5, 2) generated by high energy mi More

  In this research, the effect of different substitution quantities of zinc cations on electromagnetic and microwave absorption properties of Z-type barium hexaferrite with chemical composition of Ba3Co2-xZnxFe24O41 (x=0, 1.2, 1.3, 1.4, 1.5, 2) generated by high energy milling method was studied. X-ray diffraction (XRD) method was used to verify the formation of Z type Ba-hexaferrite phase in the synthesis conditions. Magnetization properties of different compositions were studied by alternative gradient force magnetometery (AGFM). X-ray diffraction (XRD) method was used to confirm the formation of Z-type Ba-hexaferrite phase. The investigations by AGFM showed that the amount of magnetization increased by substituting the desired composition. So that the amount of magnetization (67 emu/g) for an unsubstituted sample will reach its maximum (84 emu/g) for the sample with composition of . In addition, complex permeability and permittivity coefficients of the samples were studied by vector network analyzer (VNA). Using the measured coefficients, reflection loss curves were plotted. The results of the reflection loss (RL) plots showed that, on average, the maximum absorption bandwidth occurred among the samples at a frequency range of 4-8 GHz. The best absorption (the most negative reflectance loss) was observed at -47 dB and at a frequency of 7 GHz for the sample with an index of substitution of x=1.3. Manuscript profile
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  8 - The Effect of Gd Cation Substitution on the Structural and Electromagnetic Properties of Z-Type Barium Hexaferrite
  Mohammad Jazirehpour Ahmad Poorbafrani Zinat Mirzaei
  The effect of gadolonium cation substitution on the structural and electromagnetic properties of Z-type barium hexaferrite was investigated in this study. This group of compounds is known as Ba3Co2-xGdxFe24O41, and it was created using the energetic milling approach wit More

  The effect of gadolonium cation substitution on the structural and electromagnetic properties of Z-type barium hexaferrite was investigated in this study. This group of compounds is known as Ba3Co2-xGdxFe24O41, and it was created using the energetic milling approach with substitution values of 0, 0.1, 0.3, 0.5, 0.8, 0.1, and 1.2. X-ray diffraction (XRD) analyses and scanning electron microscopy (SEM) photos of Ba3Co1.6Gd0.4Fe24O41 samples were obtained to investigate the phase formation temperature and the effect of particle size on the properties of this compound. A network vector analyzer was used to assess the real and imaginary components of the samples' electrical permittivity (ε) and magnetic permeability (μ) in order to evaluate their electromagnetic properties (VNA). Using these coefficients, reflection loss diagrams of the compounds were created in the frequency range of 1-18 GHz. By examining the samples in terms of maximum absorption intensity and bandwidth at the same time, the samples with Gd substitution with x = 0.5 in the frequency bands S and C1, the sample with x = 0.3 in the band C2, the sample with x = 0.3 in the X band, the sample with x = 0.1 in the X band, and the sample with x = 1.2 in the Ku band were chosen as the optimal samples (S: 1-2 GHz, C1: 2-4 GHz, C2: 4-8 GHz, X: 8-12 GHz, Ku: 12-18 GHz). Manuscript profile