Domain Structure Reversible Reconstruction of Amorphous Ferromagnetic by Water Molecules Weak Adsorption

2009 ◽  
Vol 152-153 ◽  
pp. 428-430 ◽  
Author(s):  
V.E. Zubov ◽  
A.D. Kudakov ◽  
N.L. Levshin ◽  
N.A. Mezenkov
Keyword(s):  
Domain Wall ◽  
Domain Structure ◽  
Domain Walls ◽  
Sample Surface ◽  
Wall Structure ◽  
Water Molecules ◽  
Wall Width ◽  
Influence Of Water ◽  
Weak Adsorption ◽  
Domain Wall Structure

Influence of water molecules reversible adsorption on domain structure and domain wall structure in amorphous Fe-rich ferromagnet samples is investigated by magnetooptical method. Before investigation the samples were kept in the air. Domain structure of the samples significantly changes in wacuum: instead one 180-degree domain wall several domain walls appear which are oriented with angle 45o to the long side of the sample. This effect is completely reversible. Another new effect is found: domain wall width on the sample surface in vacuum is 35% bigger (13.5 µm) than in atmosphere of water vapor (10 µm).

Atomic Structure of the Domain Walls of the Discommensurate Phases in Ge(111)/Ga

1998 ◽  
Vol 05 (01) ◽  
pp. 175-179 ◽  
Author(s):  
Zheng Gai ◽  
Bo Gao ◽  
Hang Ji ◽  
R. G. Zhao ◽  
W. S. Yang
Keyword(s):  
Domain Wall ◽  
Scanning Tunneling Microscopy ◽  
Atomic Structure ◽  
Domain Walls ◽  
Scanning Tunneling ◽  
Wall Structure ◽  
Tunneling Microscopy ◽  
Domain Wall Structure ◽  
Stm Images

We have studied the γ and β discommensurate phases of the Ge(111)/Ga system with scanning tunneling microscopy (STM). On the basis of the features of these phases known from our STM images as well as from previous papers, models of domain-wall structure of both phases have been proposed for further investigations.

scholarly journals Effective pinning energy landscape perturbations for propagating magnetic domain walls

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
D. M. Burn ◽  
D. Atkinson
Keyword(s):  
Domain Wall ◽  
Domain Walls ◽  
Energy Landscape ◽  
Magnetic Domain ◽  
Wall Structure ◽  
Magnetic Domain Wall ◽  
Magnetic Domain Walls ◽  
Periodic Behaviour ◽  
Domain Wall Structure ◽  
Magnetization Processes

Abstract The interaction between a magnetic domain wall and a pinning site is explored in a planar nanowire using micromagnetics to reveal perturbations of the pinning energetics for propagating domain walls. Numerical simulations in the high damping ’quasi-static’ and low damping ’dynamic’ regimes are compared and show clear differences in de-pinning fields, indicating that dynamical micromagnetic models, which incorporate precessionally limited magnetization processes, are needed to understand domain wall pinning. Differences in the micromagnetic domain wall structure strongly influence the pinning and show periodic behaviour with increasing applied field associated with Walker breakdown. In the propagating regime pinning is complicated.

scholarly journals Domain Wall Splitting in Extra Dimension

2012 ◽  
Vol 2012 ◽  
pp. 1-11
Author(s):  
A. Tofighi
Keyword(s):  
Critical Temperature ◽  
Domain Wall ◽  
Inflection Point ◽  
Domain Walls ◽  
Analytical Form ◽  
Wall Structure ◽  
Temperature Dependent ◽  
Divided Domain ◽  
Domain Wall Structure ◽  
Analytical Expressions

We study the splitting of domain walls in 5-dimensional flat Minkowski spacetime. To construct a domain wall structure we utilize a potential of the form and for simplicity we assume the scalar field to be real. We also assume the coefficient a to be temperature-dependent. We find exact analytical expressions for the energy density of the domain wall and from this expression we find close analytical form for the separation of the divided domain walls. We find that near critical temperature the domain walls split. At the critical temperature, the domain walls rejoin. In the region above this critical temperature, the kink solution is nontopological. We find that the phenomena of splitting of domain walls occurs in this region as well. This effect is especially manifest near the inflection point of the potential.

scholarly journals Single-spin sensing of domain-wall structure and dynamics in a thin-film skyrmion host

2019 ◽  
Vol 3 (8) ◽  
Author(s):  
Alec Jenkins ◽  
Matthew Pelliccione ◽  
Guoqiang Yu ◽  
Xin Ma ◽  
Xiaoqin Li ◽  
...  
Keyword(s):  
Thin Film ◽  
Domain Wall ◽  
Wall Structure ◽  
Single Spin ◽  
Structure And Dynamics ◽  
Domain Wall Structure

Domain‐Wall Structure in Permalloy Films

1958 ◽  
Vol 29 (3) ◽  
pp. 294-295 ◽  
Author(s):  
E. E. Huber ◽  
D. O. Smith ◽  
J. B. Goodenough
Keyword(s):  
Domain Wall ◽  
Wall Structure ◽  
Domain Wall Structure

Peierls “Washboard” Controls Dynamics of the Domain Walls in Molecular Ferrimagnets

2015 ◽  
Vol 233-234 ◽  
pp. 55-59
Author(s):  
Marina Kirman ◽  
Artem Talantsev ◽  
Roman Morgunov
Keyword(s):  
Domain Wall ◽  
Crystal Lattice ◽  
Domain Walls ◽  
Low Frequency ◽  
Domain Wall Motion ◽  
Lattice Parameter ◽  
Structural Defects ◽  
Crystal Lattice Parameter ◽  
Wall Width ◽  
Debye Relaxation

The magnetization dynamics of metal-organic crystals has been studied in low frequency AC magnetic field. Four modes of domain wall motion (Debye relaxation, creep, slide and over - barrier motion (switching)) were distinguished in [MnII(H(R/S)-pn)(H2O)] [MnIII(CN)6]⋅2H2O crystals. Debye relaxation and creep of the domain walls are sensitive to Peierls relief configuration controlled by crystal lattice chirality. Structural defects and periodical Peierls potential compete in the damping of the domain walls. Driving factor of this competition is ratio of the domain wall width to the crystal lattice parameter.

scholarly journals Local Domain Wall Structure in Polycrystalline BiFeO3

2015 ◽  
Vol 21 (S3) ◽  
pp. 783-784 ◽  
Author(s):  
A. Bencan ◽  
G. Drazic ◽  
H. Ursic ◽  
N. Sakamoto ◽  
B. Jancar ◽  
...  
Keyword(s):  
Domain Wall ◽  
Wall Structure ◽  
Local Domain ◽  
Domain Wall Structure
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