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Your search keyword '"J. Amighian"' showing total 9 results
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9 results on '"J. Amighian"'

1. The effect of temperature and atmosphere on spinel phase formation of nano-manganese ferrite

Author

B. Nasr, J. Amighian, and M. Mozaffar

Subjects
nanoparticle, magnetic separation, inert atmosphere, Physics, QC1-999
Abstract

Phase formation of manganese ferrite prepared by co-precipitation method is studied at different annealing temperatures. It is shown that the spinel phase is formed by quenching only in inert gas. XRD patterns show that the background picks fall in intensity by increasing annealing temperature and the single phase is achieved by magnetic separation.

Published
2006

2. Synthesis and characterization of NiAlxFe2−xO4 magnetic spinel ferrites produced by conventional method

Author

I. Maghsoudi, J. Amighian, M.J. Hadianfard, and H. Shokrollahi

Subjects
Materials science, Magnetometer, Scanning electron microscope, General Chemical Engineering, Metallurgy, Spinel, Analytical chemistry, Coercivity, engineering.material, Grain size, law.invention, Lattice constant, law, engineering, Curie temperature, Electrical measurements
Abstract

This work investigates the synthesis of Al-substituted nickel ferrite by powder conventional method with different Al contents with x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5 (NiAlxFe2 − xO4). X-ray diffraction, scanning electron microscopy, vibrating sample magnetometry and measurement of inductance–capacitance–resistance were carried out at room temperature to study the structural, magnetic and electrical properties. The structural analysis reveals that the lattice parameter and the grain size decrease as the Al content increases. The magnetic and electrical measurements show that the saturation magnetization, Curie point, coercivity and equivalent series resistance decrease by increasing the Al content.

Published
2013
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9. Measurement of the anisotropy constants K3and K1for nickel and a dilute nickel-vanadium alloy

Author

W D Corner and J Amighian

Subjects
Materials science, Physics and Astronomy (miscellaneous), Magnetometer, Alloy, Metallurgy, Metals and Alloys, General Engineering, Measure (physics), Analytical chemistry, Vanadium, chemistry.chemical_element, engineering.material, law.invention, Nickel, chemistry, law, engineering, Anisotropy
Abstract

A torque magnetometer has been used to measure K3 for Ni and for a Ni 0.98 at.% V alloy. Measurements have extended from 10 to 200K. The results are compared with those of other workers and reasons for discrepancies are suggested.

Published
1976
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