scholarly journals Metrological aspects of an automated method for measuring electrophysical parameters of soft magnetic materials

2021 ◽  
Vol 2086 (1) ◽  
pp. 012072
Author(s):  
A V Volik ◽  
E A Pecherskaya ◽  
Yu A Varenik ◽  
T O Zinchenko ◽  
D V Artamonov ◽  
...  
Keyword(s):  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
Soft Magnetic Materials ◽  
Automated System ◽  
Soft Magnetic ◽  
Metrological Analysis ◽  
Automated Method ◽  
Secondary Voltage ◽  
Normal Magnetization ◽  
Magnetic Hysteresis Loops

Abstract The structure of an automated system for measuring magnetic-hysteresis loops, normal magnetization curve, magnetic permeability with an error of no more than ± 1% is proposed. The measuring principle is based on the inferential measurements of the magnetic induction and the coercive force by integrating the secondary voltage and the excitation current. As a result of metrological analysis, an increase in the measurements accuracy is achieved both by improving the hardware implementation and calibrating the measuring channels, by introducing a correction for the systematic component of the error.

Research on Magnetic Properties of Nd2Fe14B/α-Fe/Nd2Fe14B Exchange-Coupled Trilayer Films

2011 ◽  
Vol 84-85 ◽  
pp. 567-571
Author(s):  
Min Gang Zhang ◽  
Li Li Yang ◽  
Yi Chao Zhao ◽  
Jia Zhang ◽  
Gang Sun
Keyword(s):  
Exchange Coupling ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
Maximum Energy ◽  
Soft Magnetic ◽  
Coupling Region ◽  
Magnetic Hysteresis Loops ◽  
Complete Exchange ◽  
Energy Products ◽  
The Relationship

The magnetic hysteresis loops of Nd2Fe14B/α-Fe/Nd2Fe14B exchange-coupling trilayer film are simulated by micromagnetic theory, and the relationship between remanence, coercivity, energy products and soft magnetic thickness are discussed in detail. The results show that the hysteresis loops is rectangle and the trilayer films are in complete exchange-coupling region when the soft magnetic thickness is below the critical point(5nm); With the increase of the soft magnetic thickness, the coercivity of the trilayer films decreases monotonically. Maximum energy products are obtained when the soft magnetic thickness is 5nm.

Modelling of Normal Magnetization Curves of Soft Magnetic Alloys

2010 ◽  
Vol 659 ◽  
pp. 429-434 ◽  
Author(s):  
István Mészáros ◽  
Gábor Vértesy
Keyword(s):  
Hysteresis Loops ◽  
Poor Quality ◽  
Soft Magnetic Materials ◽  
Hyperbolic Model ◽  
Magnetization Curves ◽  
Soft Magnetic ◽  
Magnetic Alloys ◽  
Applied Model ◽  
Soft Magnetic Alloys ◽  
Normal Magnetization

In this paper, we present an application of the so-called hyperbolic model of magnetization. The model was modified and it was applied for nine different soft magnetic alloys. The tested samples were electro-technical steels (FeSi alloys) and a permalloy (FeNi alloy) with strongly different magnetic properties. Among them, there are top, medium and definitely poor quality soft magnetic materials as well. Their minor hysteresis loops and normal magnetization curves were measured by alternating current measurement. The hyperbolic model of magnetization was applied for the experimental normal magnetization curves. It was proved that the applied model is excellent for describing mathematically the experimental magnetization curves.

Simulations of magnetic hysteresis loops at high temperatures

2014 ◽  
Vol 116 (12) ◽  
pp. 123910 ◽  
Author(s):  
M. L. Plumer ◽  
J. van Ek ◽  
J. P. Whitehead ◽  
T. J. Fal ◽  
J. I. Mercer
Keyword(s):  
High Temperatures ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
Magnetic Hysteresis Loops

scholarly journals Exchange bias in ferromagnetic bilayers with orthogonal anisotropies: the case of GaMnAsP/GaMnAs combination

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Suho Choi ◽  
Seul-Ki Bac ◽  
Xinyu Liu ◽  
Sanghoon Lee ◽  
Sining Dong ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Easy Axis ◽  
Initial Conditions ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
The Other ◽  
Planar Hall Effect ◽  
Magnetic Layers ◽  
Out Of Plane ◽  
Magnetic Hysteresis Loops

Abstract We report the observation of exchange bias in a ferromagnetic Ga0.94Mn0.06As0.77P0.23/ Ga0.94Mn0.06As bilayer, in which the easy axis in one layer is oriented out-of-plane, and in the other in-plane. Magnetization reversal in this system is explored using planar Hall effect (PHE) measurements under various initial conditions and with various field-cooling orientations. Our results show that the two magnetic layers are ferromagnetically exchange-coupled, and that such coupling results in pronounced exchange-bias-like shifts of magnetic hysteresis loops during reversal of in-plane magnetization. The presence of exchange bias in this system can be understood on the basis of magnetic closure domains formed in the layer with the out-of-plane easy axis.

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