Effect of the magnetic field in the plane of a garnet ferrite film with orthorhombic magnetic anisotropy on the dynamics of domain walls

2003 ◽  
Vol 45 (3) ◽  
pp. 503-507 ◽  
Author(s):  
V. V. Randoshkin ◽  
V. A. Polezhaev ◽  
N. N. Sysoev ◽  
Yu. N. Sazhin ◽  
V. N. Dudorov
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Domain Walls ◽  
Ferrite Film ◽  
Garnet Ferrite ◽  
The Magnetic Field

On the magnetic field acting upon moving domain walls in (Bi,Yb)3(Fe,Ga)5O12 garnet ferrite films

2002 ◽  
Vol 28 (7) ◽  
pp. 595-596
Author(s):  
V. V. Randoshkin ◽  
V. A. Polezhaev ◽  
Yu. N. Sazhin ◽  
N. N. Sysoev ◽  
V. N. Dudorov
Keyword(s):  
Magnetic Field ◽  
Domain Walls ◽  
Garnet Ferrite ◽  
Moving Domain ◽  
Ferrite Films ◽  
The Magnetic Field

The Magnetic Anisotropy of Stretched Rubber as a Function of the Tension to Which It Is Subjected

1945 ◽  
Vol 18 (1) ◽  
pp. 8-9 ◽  
Author(s):  
Eugénie Cotton-Feytis
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Uniaxial Crystal ◽  
Horizontal Magnetic Field ◽  
First Approximation ◽  
The Difference ◽  
The Times ◽  
Angular Displacements ◽  
The Magnetic Field ◽  
Oscillation Method

Abstract From the standpoint of its magnetic anisotropy, stretched rubber is comparable in a first approximation to a uniaxial crystal, in which the direction of the axis is the same as the direction of elongation. It is possible to measure this anisotropy by means of the oscillation method used by Krishnan, Guha and Banerjee in studying crystals. The sample to be examined is suspended in a uniform horizontal magnetic field in such a manner that its axis is horizontal. It is then so arranged that the torsion of the suspension wire is zero when the rubber sample is in a position of equilibrium in the field. The times of oscillation T′ and T for very small angular displacements around this position, in the presence and then in the absence of the magnetic field, are then recorded. In this way the difference between the specific susceptibilities in the direction of the axis and in the horizontal direction perpendicular to the axis is calculated by application of the equation:

scholarly journals Field- and Stress-Induced Magnetic Anisotropy in Nanocrystalline Fe-Based and Amorphous Co-Based Alloys

1999 ◽  
Vol 32 (1-4) ◽  
pp. 289-294
Author(s):  
V. A. Lukshina ◽  
N. V. Dmitrieva ◽  
A. P. Potapov
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Amorphous Alloy ◽  
Magnetic Anisotropy ◽  
Thermomechanical Treatment ◽  
Nanocrystalline Alloy ◽  
Complex Effect ◽  
Induced Magnetic Anisotropy ◽  
The Magnetic Field

For nanocrystalline alloy Fe73.5Cu1Nb3Si13.5B9 thermomechanical treatment was carried out simultaneously with nanocrystallizing annealing (1) or after it (2). It was shown that a change in magnetic properties for the case 1 is essentially greater than for the case 2. Complex effect of thermomagnetic and thermomechanical treatments on magnetic properties was studied in the above-mentioned nanocrystalline alloy as well as in the amorphous alloy Fe5Co70.6Si15B9.4., During the annealings both field and stress were aligned with the long side of the specimens. It was shown that the magnetic field, AC or DC, decreases an effect of loading. Moreover, the magnetic field, AC or DC, applied after stress-annealing can destroy the magnetic anisotropy already induced under load.

scholarly journals INFLUENCE OF THE MAGNETIC FIELD ON THE FERMION SCATTERING OFF BUBBLE AND KINK WALLS

2000 ◽  
Vol 15 (28) ◽  
pp. 1755-1766 ◽  
Author(s):  
P. CEA ◽  
G. L. FOGLI ◽  
L. TEDESCO
Keyword(s):  
Magnetic Field ◽  
Domain Wall ◽  
Domain Walls ◽  
Zero Mode ◽  
Bubble Wall ◽  
Electroweak Phase Transition ◽  
Transmission And Reflection Coefficients ◽  
The Magnetic Field ◽  
Transmission And Reflection

We investigate the scattering of fermions off domain walls at the electroweak phase transition in the presence of a magnetic field. We consider both the bubble wall and the kink domain wall. We derive and solve the Dirac equation for fermions with momentum perpendicular to the walls, and compute the transmission and reflection coefficients. In the case of kink domain wall, we briefly discuss the zero mode solutions localized on the wall. The possible role of the magnetic field for the electroweak baryogenesis is also discussed.

Influence of Pulsed Magnetic Field on the Al-Heterodiffusion in α-Fe

2009 ◽  
Vol 289-292 ◽  
pp. 323-328 ◽  
Author(s):  
A.V. Pokoev ◽  
M.A. Verjakovskaya
Keyword(s):  
Magnetic Field ◽  
Domain Walls ◽  
Pulsed Magnetic Field ◽  
Magnetic Field Pulse ◽  
Ray Method ◽  
X Ray ◽  
Impurity Atoms ◽  
Moving Domain ◽  
The Magnetic Field ◽  
Field Influence

Based on the X-ray method an experimental research has been carried out aimed to estimate the pulsed magnetic field influence on the heterodiffusion of Al in -Fe within the temperature interval of 700-820 °С and at the amplitude intensity of the magnetic field pulse equal to 0–557.2 kА/m and its frequency ranging from 0 to 8 Hz. It is established that the pulsed magnetic field changes noticeably the value of the measured coefficient of Al diffusion in -Fe. Possible mechanisms of the pulsed magnetic field influence on the diffusion process are considered on taking into account the interaction of moving domain walls, dislocations and impurity atoms.

scholarly journals Study of the iron nanoparticles phase transformation during thermal annealing

2017 ◽  
pp. 16-25
Author(s):  
Artem Kozlovskiy ◽  
Jumat Kargin ◽  
Malik Kokarev ◽  
Daut Mukhambetov
Keyword(s):  
Magnetic Field ◽  
Heat Treatment ◽  
Phase Transformation ◽  
Phase Composition ◽  
Iron Oxide ◽  
Magnetic Anisotropy ◽  
Hysteresis Loop ◽  
Iron Nanoparticles ◽  
Oxide Phases ◽  
The Magnetic Field

Change in structural properties and phase composition of nanoparticles based on iron oxide was researched in the paper. As a result of conducted studies it was found that during heat treatment oxide phases of (γ-Fe2O3) and α-Fe2O3 maghemite were formed in oxygen atmosphere. Researches of powder array magnetization were showed that the hysteresis loop movement had the form characteristic for ferromagnetic materials. Additionally, loops obtained at different directions of the magnetic field have different characters, which indicate the magnetic anisotropy presence in the samples.

scholarly journals Магнитокалорический эффект в окрестности температуры магнитной компенсации аморфных ферримагнитных пленок Gd-Co

2021 ◽  
Vol 63 (9) ◽  
pp. 1325
Author(s):  
А.В. Свалов ◽  
А.В. Архипов ◽  
В.Н. Лепаловский ◽  
Е.А. Степанова ◽  
В.О. Васьковский ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Magnetocaloric Effect ◽  
Magnetic Structure ◽  
Perpendicular Magnetic Anisotropy ◽  
Film Plane ◽  
Probable Reason ◽  
Wide Range ◽  
Magnetocaloric Properties ◽  
The Magnetic Field

The magnetic and magnetocaloric properties of amorphous ferrimagnetic Gd-Co films with perpendicular magnetic anisotropy were studied in a wide range of fields and temperatures. The change in the sign of the magnetocaloric effect near the compensation temperature occurs almost abruptly when the magnetic field is oriented perpendicular to the film plane. In a certain temperature range, it happens when the field is oriented along the plane of the sample. The most probable reason for the blurring of this transition is the appearance of a non-collinear magnetic structure.

Magnetic Properties and Crystal Structure of (Fe,Ni)2( P,Si) Quaternaries of Fe2P-Type

2020 ◽  
Vol 1001 ◽  
pp. 53-60
Author(s):  
Tian Yi Ren ◽  
Rui Hong Wang ◽  
Tian Liang Wang
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Permanent Magnet ◽  
Room Temperature ◽  
Easy Axis ◽  
Magnetocrystalline Anisotropy ◽  
Hexagonal Structure ◽  
Crystal Axis ◽  
P Type ◽  
The Magnetic Field

(Fe,Ni)2(P,Si) compounds were synthesized and characterized. Ni substitution in Fe1.95-xNixP0.7Si0.3 is found to favor the formation of Fe2P-type hexagonal structure. The samples appear nearly single phase. Powder oriented in the magnetic field shows a pronounced uniaxial magnetic anisotropy with c axis as the easy axis. Magnetization measurements carried out along and perpendicular to the c crystal axis demonstrate a significant magnetic anisotropy, making these materials potential candidates for permanent magnet applications. We found that (Fe,Ni)2(P,Si) compound has no remanent magnetic field and coercivity, but it has a large magnetocrystalline anisotropy at room temperature. Therefore, doping Fe2P type compounds with a small amount of Ni and Si may be a promising way to create new materials with large magnetocrystalline anisotropy at room temperature, and thus rare-earth free permanent magnet.

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