Magnetic domains and techniques for their observation
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Magnetic domains and techniques for their observation by R. Carey

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Published by English Universities P. in London .
Written in English

Subjects:

  • Domain structure

Book details:

Edition Notes

Bibliography: p. [155]-163.

Statementby R. Carey and E.D. Isaac.
ContributionsIsaac, E. D. joint author.
Classifications
LC ClassificationsQC757 .C3
The Physical Object
Paginationviii, 168 p.
Number of Pages168
ID Numbers
Open LibraryOL6014905M
LC Control Number66071919

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Additional Physical Format: Online version: Carey, R. (Roy) Magnetic domains and techniques for their observation. New York, Academic Press, Get this from a library! Magnetic domains and techniques for their observation,. [R Carey; E D Isaac]. A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another and they point in the same direction. When cooled below a temperature called the Curie temperature, the magnetization of a piece of ferromagnetic material spontaneously divides into many small. In this chapter methods to observe the magnetic microstructure are critically examined. For each method the principle, the basic experimental procedure, an outline of the theory, special techniques, and the potential are reviewed, followed by a discussion of merits and shortcomings of the by: 5.

Extended magnetic domain structures, which is an evidence of long-range magnetic interaction, was observed in (Ga,Mn)As samples with magnetic easy axis in-plane as well as those with easy axis perpendicular-to-plane by scanning Hall microscope, scanning SQUID microscope, magneto-optical microscope, and Lorenz microscope as shown in Figure , where the size of the domain is shown to . The FS images in Fig. 5a-c show branching magnetic domains pattern perpendicular to RD. See also the highlighted areas by dashed red rectangular shapes in Fig. 5a and b. D. Buttle, C. Scruby, in Encyclopedia of Materials: Science and Technology, Anisotropy Methods. The partial alignment of magnetic domains towards the maximum positive stress axis will increase the magnetic permeability because a smaller applied magnetic field is then required to fully align the domains. Conversely the magnetic permeability measured along the minimum or most negative. For in-depth understanding and more accurate predictions of the performance of modern soft magnetic materials, particularly under a.c. magnetisation, the more complex structures present in real materials must be taken into account. This calls for methods of directly observing and quantifying static and dynamic domain structures. The following sections cover the most common domain observation Author: Anthony Moses, Philip Anderson, Keith Jenkins, Hugh Stanbury.

Magnetism is a class of physical phenomena that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Magnetism is one aspect of the combined phenomenon of most familiar effects occur in ferromagnetic materials, which are strongly . We report the first visual observation of Bloch lines in thin garnet films without the perturbing influence of magnetic particles in suspension (Bitter solution). A second‐order magneto‐optic effect reveals the Bloch line position and the signs and positions of the domain wall segments lying adjacent to it. The present study is limited to Neel walls that separate in‐plane domains aligned Cited by: techniques can be found in the text book “Magnetic Domains”. Despite the multiplicity of domain observation techniques today, it is interesting to point out that little is known about the internal domain structure of bulk ferromagnetic materials. Knowing why the magnetic skyrmions occur and how they can be manipulated is critical to the applications, which requires state-of-the-art observation techniques. This chapter tries first to establish the connections between different types of magnetic domains by referring to their formation backgrounds and spatial configurations, and then Author: Hubin Luo, Weixing Xia, Haifeng Du, J. Ping Liu.