Magnetic domain structure and domain wall analysis of ferromagnetic MnAs nanodisks selectively-grown on Si (111) substrates for spintronic applications

ABSTRACTMagnetic domain structures in Fe-3wt%Si alloy have been observed by a Kerr microscopy to understand the interaction between the magnetic domain wall and grain boundaries. It was found that the domain structures in the vicinity of the grain boundary depend on the misorientation angle; the high angle random boundary disturbs the magnetic domain structure more than the low angle boundary. In addition to the misorientation angle, magnetic domain structures were affected by the inclination of the grain boundary plane. Moreover, dynamic observations of rearrangement of the magnetic domain structure during magnetization revealed that grain boundaries could act as the sink and/or the source for magnetic domains.

Download Full-text

Slow Domain Wall Motion and Magnetic Domain Structure in Amorphous TbFe Films

Materials Science Forum ◽

10.4028/www.scientific.net/msf.62-64.619 ◽

1991 ◽

Vol 62-64 ◽

pp. 619-620 ◽

Cited By ~ 7

Author(s):

T.G. Pokhil ◽

B.S. Vvedensky ◽

E.N. Nikolaev

Keyword(s):

Domain Wall ◽

Domain Structure ◽

Wall Motion ◽

Magnetic Domain ◽

Domain Wall Motion ◽

Magnetic Domain Structure

Download Full-text

Magnetic domain structure and domain-wall energy in Y2Fe13MnB and Y2Fe12Mn3B compounds

Journal of Magnetism and Magnetic Materials ◽

10.1016/0304-8853(90)90500-p ◽

1990 ◽

Vol 83 (1-3) ◽

pp. 239-240 ◽

Cited By ~ 2

Author(s):

J.J. Wysłocki ◽

F. Bolzoni

Keyword(s):

Domain Wall ◽

Domain Structure ◽

Magnetic Domain ◽

Magnetic Domain Structure ◽

Domain Wall Energy

Download Full-text

Domains and domain nucleation in magnetron-sputtered CoCr thin films

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100151064 ◽

1993 ◽

Vol 51 ◽

pp. 1046-1047

Author(s):

B. G. Demczyk

Keyword(s):

Thin Films ◽

Domain Structure ◽

Magnetic Domain ◽

Domain Size ◽

Film Plane ◽

Magnetic Domain Structure ◽

Perpendicular Magnetization ◽

Columnar Grains ◽

Reversal Mechanism ◽

Lorentz Transmission Electron Microscopy

CoCr thin films have been of interest for a number of years due to their strong perpendicular anisotropy, favoring magnetization normal to the film plane. The microstructure and magnetic properties of CoCr films prepared by both rf and magnetron sputtering have been examined in detail. By comparison, however, relatively few systematic studies of the magnetic domain structure and its relation to the observed film microstructure have been reported. In addition, questions still remain as to the operative magnetization reversal mechanism in different film thickness regimes. In this work, the magnetic domain structure in magnetron sputtered Co-22 at.%Cr thin films of known microstructure were examined by Lorentz transmission electron microscopy. Additionally, domain nucleation studies were undertaken via in-situ heating experiments.It was found that the 50 nm thick films, which are comprised of columnar grains, display a “dot” type domain configuration (Figure 1d), characteristic of a perpendicular magnetization. The domain size was found to be on the order of a few structural columns in diameter.

Download Full-text