Effects of the antiferromagnetic anti-phase domain boundary on the magnetization processes in Ni2Mn(Ga0.5Al0.5) Heusler alloy

2011 ◽  
Vol 65 (1) ◽  
pp. 41-44 ◽  
Author(s):  
R.Y. Umetsu ◽  
H. Ishikawa ◽  
K. Kobayashi ◽  
A. Fujita ◽  
K. Ishida ◽  
...  
Keyword(s):  
Heusler Alloy ◽  
Domain Boundary ◽  
Phase Domain ◽  
Magnetization Processes

scholarly journals Phase domain boundary motion and memristance in gradient-doped FeRh nanopillars induced by spin injection

2021 ◽  
Vol 118 (12) ◽  
pp. 122403
Author(s):  
Rowan C. Temple ◽  
Mark C. Rosamond ◽  
Jamie R. Massey ◽  
Trevor P. Almeida ◽  
Edmund H. Linfield ◽  
...  
Keyword(s):  
Domain Boundary ◽  
Spin Injection ◽  
Boundary Motion ◽  
Phase Domain

Anomalous contrast from an anti-phase domain boundary in beta-brass

1966 ◽  
Vol 14 (131) ◽  
pp. 1077-1085 ◽  
Author(s):  
S. G. Cupschalk† ◽  
Norman Brown†
Keyword(s):  
Domain Boundary ◽  
Phase Domain

Microdiffraction from out of Phase Domain Boundaries and Stacking Faults

1982 ◽  
Vol 40 ◽  
pp. 698-699
Author(s):  
J. Zhu ◽  
J.M. Cowley ◽  
H.Q. Ye
Keyword(s):  
Electron Beam ◽  
Source Function ◽  
Domain Boundary ◽  
Antiphase Domain ◽  
Step Function ◽  
Phase Object ◽  
Phase Domain ◽  
Domain Boundaries ◽  
The Fourier Transform ◽  
Coherent Source

It has been pointed out1 that any discontinuity at the edge of a crystal or within a crystal may give rise to spot splitting in microdiffraction patterns.The present work gives the basic theory for an antiphase domain boundary in Cu3Au and a twinning boundary in a f.c.c. crystal illuminated by a finite electron beam, which has a diameter of about 15Å. The treatment is based on the weak phase object approximation. These boundaries are planar faults. Multiplying a step function s(x) by the crystal potential expresses the discontinuity in the potential of the sample. When both sides of the boundary in the sample are illuminated by the finite coherent source and the boundary is parallel to the electron beam, the splitting of microdiffraction spots results from the convolution of the Fourier transform of the step function and the finite coherent source function.

scholarly journals Anti‐phase domain boundary formation in two‐dimensional Ba‐Ti‐O on Pd(111): An alternative to phase separation

2021 ◽  
Author(s):  
Friederike Elisa Wührl ◽  
Oliver Krahn ◽  
Sebastian Schenk ◽  
Stefan Förster ◽  
Wolf Widdra
Keyword(s):  
Phase Separation ◽  
Domain Boundary ◽  
Two Dimensional ◽  
Boundary Formation ◽  
Phase Domain

Anti-phase domain boundary tubes in Ni3Al

Nature ◽  
1982 ◽  
Vol 300 (5893) ◽  
pp. 621-623 ◽  
Author(s):  
C. T. Chou ◽  
P. B. Hirsch ◽  
M. McLean ◽  
E. Hondros
Keyword(s):  
Domain Boundary ◽  
Phase Domain

Brownian Motion and Coarsening of Domain Boundaries on (7×7)-Si(111)

1995 ◽  
Vol 404 ◽  
Author(s):  
Pita Atala ◽  
R. J. Phaneuf ◽  
N. C. Barteltl ◽  
W. Swiech ◽  
E. Bauer
Keyword(s):  
Average Distance ◽  
Domain Boundary ◽  
Statistical Problem ◽  
Low Energy ◽  
One Dimension ◽  
Phase Domain ◽  
Time Motion ◽  
Domain Boundaries ◽  
Low Energy Electron ◽  
Energetic Interactions

AbstractWe have used low-energy electron microscopy to investigate the real-time motion of (7×7) out-of-phase domain boundaries in the (7×7) reconstruction on vicinal Si(111), just below the phase transition temperature. As a function of time, the domain boundaries wander and coalesce in one-dimension, parallel to the step edges. We have established that the motion is consistent with the statistical problem of a random walk in the presence of absorbing barriers and have measured the diffusion coefficient for domain boundary wandering. The average distance between domain boundaries becomes large as they coarsen, consequently energetic interactions are not significant in determining their arrangement on this surface.

TEM study of lanthanum aluminate

1990 ◽  
Vol 48 (4) ◽  
pp. 1060-1061
Author(s):  
C.Y. Yang ◽  
Z.R. Huang ◽  
Y.Q. Zhou ◽  
C.Z. Li ◽  
W.H. Yang ◽  
...  
Keyword(s):  
Domain Boundary ◽  
Point Group ◽  
Optical Microscope ◽  
Dark Field ◽  
Zone Axis ◽  
Superconducting Film ◽  
Ion Milling ◽  
Lanthanum Aluminate ◽  
Ring Diameter ◽  
Diffraction Patterns

Lanthanum aluminate(LaAlO3) single crystal as a substrate for high Tc superconducting film has attracted attention recently. We report here a transmission electron microscopy(TEM) study of the crystal structure and phase transformation of LaAlO3 by using Philips EM420 and EM430 microscopes. Single crystals of LaAlO3 were investigated first by optical microscope. Stripe-shaped domains of mm size are clearly seen(Fig.1a), and 90° domain boundary is also obvious. TEM specimens were prepared by mechanical grinding and polishing followed by ion-milling.Fig.lb shows μm size stripe domains of LaAlO3. Convergent beam electron diffraction patterns (CBED) from single domain were taken.Fig. 2a and Fig. 2c are [001] zone axis patterns which show a 4mm symmetry, and the (200) dark field of this zone axis gives 2mm symmetry(fig.2b). Therefore the point group of this crystal is either 4/mmm or m3m. The projection of the first order Laue zone(FOLZ) reflections on zero layer (fig. 2c) shows that the unit cell is face centered. A tetragonal unit ceil is chosen, with a=0.532nm and c=0.753nm, c being determined from the FOLZ ring diameter.

MAGNETIZATION PROCESSES IN HELICAL MnP

1971 ◽  
Vol 32 (C1) ◽  
pp. C1-972-C1-973
Author(s):  
T. NAGAMIYA ◽  
S. HIYAMIZU
Keyword(s):  
Magnetization Processes
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