Investigations on contact erosion in vacuum circuit breakers by arc rotation measurements with external magnetic field sensors

Author(s):  
T. Rettenmaier ◽  
V. Hinrichsen ◽  
A. Lawall ◽  
E. D. Taylor ◽  
J. Teichmann
2019 ◽  
Vol 89 (11) ◽  
pp. 1732
Author(s):  
И.Ю. Пашенькин ◽  
М.В. Сапожников ◽  
Н.С. Гусев ◽  
В.В. Рогов ◽  
Д.А. Татарский ◽  
...  

The technology of fabricating of chains of tunnel magnetoresistive (TMR) elements based on CoFe/Al2O3/NiFe nanostructures with pinning on the antiferromagnetic IrMn layer has been developed. The dependence of the magnetoresistance curves on the geometrical parameters of the laterally bounded TMR contacts, as well as on the mutual orientation of the external magnetic field and the axis of the unidirectional anisotropy of the fixed CoFe layer has been investigated. The resistance of the chains has been varied from several tens of kΩ to hundreds of MΩ, depending on the thickness of the tunnel dielectric layer. The magnitude of the magnetoresistive effect has been about 10–15%. The suggested technology can be used to make tunnel magnetic field sensors


Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 433
Author(s):  
Sergei V. Shcherbinin ◽  
Andrey V. Svalov ◽  
Grigory Y. Melnikov ◽  
Galina V. Kurlyandskaya

Magnetically soft [Ti(6)/FeNi(50)]6/Ti(6)/Cu(500)/Ti(6)/[FeNi(50)/Ti(6)]6 nanostructured multilayered elements were deposited by rf-sputtering technique in the shape of elongated stripes. The easy magnetization axis was oriented along the short size of the stripe using deposition in the external magnetic field. Such configuration is important for the development of small magnetic field sensors employing giant magnetoimpedance effect (GMI) for different applications. Microwave absorption of electromagnetic radiation was experimentally and theoretically studied in order to provide an as complete as possible high frequency characterization. The conductor-backed coplanar line was used for microwave properties investigation. The medialization for the precession of the magnetization vector in the uniformly magnetized GMI element was done on the basis of the Landau–Lifshitz equation with a dissipative Bloch–Bloembergen term. We applied the method of the complex amplitude for the analysis of the rotation of the ferromagnetic GMI element in the external magnetic field. The calculated and experimental dependences for the amplitudes of the imaginary part of the magnetic susceptibility tensor x-component and magnetoabsorption related to different angles show a good agreement.


1980 ◽  
Vol 41 (C1) ◽  
pp. C1-445-C1-445
Author(s):  
G. Langouche ◽  
N. S. Dixon ◽  
L. Gettner ◽  
S. S. Hanna

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