Direct computation of static difference magnetic field in nonlinear magnetic materials and application to shape reconstruction of damaged areas in aging materials

2002 ◽  
Vol 38 (2) ◽  
pp. 1073-1076 ◽  
Author(s):  
B. Cranganu-Cretu ◽  
F.I. Hantila ◽  
G. Preda ◽  
Zhenmao Chen ◽  
K. Miya
Keyword(s):  
Magnetic Field ◽  
Magnetic Materials ◽  
Shape Reconstruction ◽  
Direct Computation

A screening chamber for attenuating the Earth’s magnetic field based on roll magnetic materials

2012 ◽  
Vol 55 (3) ◽  
pp. 329-335 ◽  
Author(s):  
S. A. Gudoshnikov ◽  
S. N. Venediktov ◽  
Yu. B. Grebenshchikov ◽  
P. A. Kuznetsov ◽  
S. A. Manninen ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Materials ◽  
Earth’S Magnetic Field ◽  
Earth's Magnetic Field

The classification and modern use of magnetic dosage forms in medicine

2020 ◽  
pp. 18-52
Author(s):  
Sergey Pavlovich Zavadskiy
Keyword(s):  
Magnetic Field ◽  
Magnetic Materials ◽  
External Source ◽  
Dosage Forms ◽  
Therapeutic Action ◽  
Permanent Magnetic Field ◽  
Medicinal Substances ◽  
Magnetic Therapy

Currently, quite a large variety of magnetic therapy products, including magnetic dosage forms (MDF), is used in medicine. MDF contain different magnetic materials. MDF either contain or do not contain medicinal substances (MS) in their composition. The therapeutic action of MDF is produced by either a biotropic effect of magnetic field (MF) in case MDF is a source of permanent magnetic field, or mechanic action of MDF based on their interaction with an external source of MF, or a combination of the biotropic and mechanic actions. MDF used in medicine have been reviewed, and their classification by magnetic filler type has been provided.

Influence of Permanent Magnets Installation Approach on the Torque of а Magneto-Rheological Disk Brake

2021 ◽  
Vol 105 ◽  
pp. 184-193
Author(s):  
Ilya Aleksandrovich Frolov ◽  
Andrei Aleksandrovich Vorotnikov ◽  
Semyon Viktorovich Bushuev ◽  
Elena Alekseevna Melnichenko ◽  
Yuri Viktorovich Poduraev
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Magnetic Materials ◽  
Permanent Magnets ◽  
Magnetorheological Fluid ◽  
Simulation Modelling ◽  
Disc Brake ◽  
Large Area ◽  
Braking Torque ◽  
The Magnetic Field

Magnetorheological braking devices function due to the organization of domain structures between liquid and solid magnetic materials under the action of an electromagnetic or magnetic field. The disc is most widely used as a rotating braking element that made of a solid magnetic material due to the large area of contact with a magnetorheological fluid. Many factors affect the braking characteristics of the magnetorheological disc brake. Specifically, the value of the magnetic field and how the field is distributed across the work element is significantly affected at the braking torque. There are different ways to generate a magnetic field. In this study, the method of installation of permanent magnets into the construction, allowing to increase the braking torque of the magnetorheological disc brake is proposed. Simulation modelling showing the distribution of the magnetic field across the disk depending on the installation of permanent magnets with different pole orientations were carried out. The model takes into account the possibility of increasing the gap between solid magnetic materials of the structure, inside them which the magnetorheological fluid is placed. Comparative estimation of the distribution of the magnetic fields depending on the chosen method of installation of permanent magnets with different orientations of their poles is carried out. Further research is planned to focus on a comparative assessment of the distribution of magnetic fields depending on the selected material of the braking chamber.

The Influence of Quantizing Magnetic Field on The Magnetic Susceptibilities in Ultra Thin Films of Dilute Magnetic Materials

1993 ◽  
Vol 313 ◽  
Author(s):  
Kamakhya P Ghatak ◽  
S. N. Biswas
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Thin Films ◽  
Theoretical Analysis ◽  
Film Thickness ◽  
Magnetic Materials ◽  
Ultrathin Films ◽  
Surface Concentration ◽  
Magnetic Susceptibilities ◽  
Quantizing Magnetic Field

ABSTRACTIn this paper we have studied the dia and paramagnetic susceptibilities of the holes in ultrathin films of dilute magnetic materials in the presence of a quantizing magnetic field and compared the same with that of the bulk specimens under magnetic quantization for the purpose of relative comparison. It is found, taking Hg1−xMnxTe and Cd1−xMnxSe as examples, that both the susceptibilities increase with decreasing film thickness and increasing surface concentration in oscillatory Manners. The numerical values of the susceptibilities in ultrathin films of dilute magnetic materials are greater than that of the bulk and the theoretical analysis is in agreement with the experimental data as reported elsewhere.

Effectiveness of Magnetic Sheets in Suppressing Magnetic Leakage in Automobile Wireless Energy Transfer Systems

2014 ◽  
Vol 90 ◽  
pp. 51-56
Author(s):  
Takashi Takeo ◽  
Masato Kawaguchi ◽  
Taichi Ishihara ◽  
Toru Matsuzaki
Keyword(s):  
Magnetic Field ◽  
Energy Transfer ◽  
Field Strength ◽  
Magnetic Materials ◽  
Magnetic Field Strength ◽  
Metal Plate ◽  
Electromagnetic Simulation ◽  
Transfer System ◽  
Wireless Energy Transfer ◽  
The Magnetic Field

Recently, wireless energy transfer techniques are being developed for hybrid (HEV) or electric (EV) vehicles. However, without taking any measures, magnetic field strength around energy transfer systems that employ solenoid type antennas is known to exceed regulated values in most countries. In this study, the application of magnetic sheets, which are widely used as EMC components, is proposed to suppress the magnetic field leakage from an automobile energy transfer system and the ability of magnetic leakage suppression with the magnetic sheet has been evaluated by means of electromagnetic simulation. Through these investigations, desirable system arrangements are discussed. As a result, if combined with a metal plate, non-conductive magnetic materials having large permeability has been found to be preferable.

Formation of c-Axis Aligned Hydroxyapatite Sheet by Simultaneous Imposition of High Magnetic Field and Mold Rotation During Slip Casting Process

2006 ◽  
Vol 309-311 ◽  
pp. 53-56 ◽  
Author(s):  
Jun Akiyama ◽  
Masami Hashimoto ◽  
Hiroaki Takadama ◽  
Fukue Nagata ◽  
Yoshiyuki Yokogawa ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Materials ◽  
High Magnetic Field ◽  
Static Magnetic Field ◽  
Slip Casting ◽  
Casting Process ◽  
Field Direction ◽  
Magnetic Field Direction ◽  
Hydroxyapatite Crystal ◽  
Crystal Alignment

A high magnetic field is a useful tool to control the crystal alignment of non-magnetic materials such as ceramics and polymers. In the case of Hydroxyapatite crystal, the a,b-axis is aligned parallel to the direction of an imposed magnetic field. This fact implies that the alignment of the c-axis is not controllable only using a high static magnetic field due to the freedom of the c-axis in a plane perpendicular to a magnetic field direction. In this study, a high static magnetic field and mold rotation was simultaneously so applied during a slip casting process as to align the c-axis of HAp poly crystals.

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