The effect of an external magnetic field on the dealloying process of the Ni–Al alloy in alkaline solution

2017 ◽  
Vol 19 (28) ◽  
pp. 18167-18171 ◽  
Author(s):  
Haixia Zhang ◽  
Zhifeng Wang ◽  
Mingzhu Yang ◽  
Qibo Deng
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Alkaline Solution ◽  
Al Alloy

The dealloying process of the Ni–Al alloy is influenced by an external magnetic field and a finer morphology of nanoporous Ni is achieved.

scholarly journals Splitting of the Magnetic Loss Peak of Composites under External Magnetic Field

Physics ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 678-688
Author(s):  
Artem Shiryaev ◽  
Konstantin Rozanov ◽  
Andrey Naboko ◽  
Anastasia Artemova ◽  
Sergey Maklakov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Saturation Magnetization ◽  
Magnetic Loss ◽  
Coaxial Line ◽  
Al Alloy ◽  
Loss Peak ◽  
Permanent Magnetic Field ◽  
Alloy Particles ◽  
The Individual

Composite materials filled with ferromagnetic inclusions are useful in the development of various microwave devices. The performance of such devices is determined both by material properties (such as the saturation magnetization and the permeability) and by the demagnetization effects. The paper is devoted to the study of the demagnetization effect on the permeability measurements of composites under external magnetic bias. The microwave permeability of composites filled with flake sendust (Fe-Si-Al alloy) particles is measured as a function of frequency and the external magnetic field. The measurements are carried out by the Nicolson–Ross–Weir technique in a 7/3 coaxial line in the frequency range of 0.1 to 20 GHz by a vector network analyzer. It is found that the magnetic loss peak is split under external fields of more than 1.5 kOe. The main aim of this paper is to study the causes of this splitting and to interpret the observed magnetic loss peaks. To study this effect, the samples of various thicknesses and the samples with isotropic and anisotropic orientations of particles are measured. The particles in the anisotropic samples are oriented by a strong uniform magnetic field. At a small fraction of inclusions, the permanent magnetic field is demagnetized on the individual particles rather than the whole sample. The splitting of the magnetic loss peak of the isotropic sample is caused by different orientations of particles in the sample. At a high fraction of inclusions, the permanent magnetic field is demagnetized on the whole sample and the magnetic loss peak of the isotropic sample is not split. The saturation magnetization of the material is found by measurements under the external magnetic field of the anisotropic sample.

RECOIL IMPLANTATION MÖSSBAUER EXPERIMENT ON 57Fe IN Ge IN THE PRESENCE OF AN EXTERNAL MAGNETIC FIELD

1980 ◽  
Vol 41 (C1) ◽  
pp. C1-445-C1-445
Author(s):  
G. Langouche ◽  
N. S. Dixon ◽  
L. Gettner ◽  
S. S. Hanna
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Recoil Implantation
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