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2 edition of Investigation of magnetic domain structure in single crystal garnets found in the catalog.

Investigation of magnetic domain structure in single crystal garnets

by Ernest John Scheyder

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Published by Massachusetts Institute of Technology in Cambridge, Massachusetts .
Written in English


Edition Notes

ContributionsMassachusetts Institute of Technology
The Physical Object
Pagination1 v. :
ID Numbers
Open LibraryOL25127705M

Highly crystalline single-domain magnetite Fe 3 O 4 nanoparticles (NPs) are important, not only for fundamental understanding of magnetic behaviour, but also for their considerable potential applications in biomedicine and industry. Fe 3 O 4 NPs with sizes of 10– nm were systematically investigated to reveal the fundamental relationship between the crystal domain structure and the. M. KESTIGIAN, Yttrium‐Iron Garnet Single‐Crystal Growth by the Combined Czochralski‐Molten Salt Solvent Technique, Journal of the American Ceramic Society, /jtbx, 50, 3, (), ().

Magnetic domain effects in magneto-electric composite materials. The aim of the project is to investigate and optimize the magnetic domain structure in magneto-electric composites. Using spatially resolved characterization methods, we plan to obtain an understanding of the magnetic rearrangement processes in magneto-electric thin films. Figure 1. (a) a magnetic structure of a hard disk drive with bit size down to 30–40 nm, which was obtained by cobalt alloy coated probe in ambient conditions; (b–d) domain structures of different magnetically soft garnet films. One-pass method of imaging and thin magnetic coatings on the tip were.

Magnetic domains in (YGdBi) 3 (GaFe) 5 O 12 magnetic garnet have been studied using magnetic force microscopy (MFM). MFM results have demonstrated that the undisturbed magnetic domain structure in the garnet could be obtained with a soft magnetic tip. Crystal - Crystal - Magnetism: Electrons are perpetually rotating, and, since the electron has a charge, its spin produces a small magnetic moment. Magnetic moments are small magnets with north and south poles. The direction of the moment is from the south to the north pole. In nonmagnetic materials the electron moments cancel, since there is random ordering to the direction of the electron spins.


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Investigation of magnetic domain structure in single crystal garnets by Ernest John Scheyder Download PDF EPUB FB2

Texts All Books All Texts latest This Just In Smithsonian Libraries FEDLINK (US) Genealogy Lincoln Collection. National Emergency Library. Top American Libraries Canadian Libraries Universal Library Community Texts Project Gutenberg Biodiversity Heritage Library Children's Library.

Open : Investigation of magnetic domain structure in single. Cr 5 Te 8 is a quasi-2D weak itinerant ferromagnet featured with a layered trigonal crystal structure (space group Pm1). Fig. 1(a) and (b) show the side-view and top view of its trigonal crystal structure with Cr ions intercalated between the CrTe 2 layers.

The angle between nearest-neighboring Cr-Cr bonds is 60° or °. Similar to CrGeTe 3 and CrSiTe 3, there exists competition Author: Wang Zhu, Zongwei Ma, Jian Yan, Ganhong Zheng, Long Cheng, Xueli Xu, Zhi Meng, Lei Shen, Keyu An, Ch. period of the domain structure is about 2mm.

This is phase image, which was obtained by two-pass method. Garnets relate to soft magnetic materials and its domain structure can be easily perturbed by hard cobalt tip.

The using of the tip with reduced stray fields (covered by more thin magnetic film or containing the domains) enable to. Magnetic domain patterns in bulk barium ferrite (BaFe12O19; BaM) single crystals on the basal plane and the prism plane were measured and studied by magnetic.

The images of the domain structure of a single crystal Y 2 (Fe x Co 1-x) 17, shown in Fig. 8 were obtained on the plane perpendicular to the axis of easy magnetization. Near the basal plane of the uniaxial crystal, the domains split, as a result of which their width on.

The bubble domain material investigation, directedl toward preparing single crystal layers Which exhibit useful device properties is being pursued with heteroepitaxial films of gallium-substituted yttrium iron garnet or related garnet compositions.

To summarize, we observed permanent reconfiguration of the ferromagnetic domain structure in ErFeO 3 single crystal induced by irradiation of THz−FEL with. Chapter 3 Magnetic Domains Ideal domain structure In a homogeneous, defect-free, single-crystal ferromagnet with cubic symme-try, the domain structure can be explained by a balance between four energy terms: exchange, magnetostatic, anisotropy and magnetoelastic (Kittel and Galt, ).

Exchange energy. The magnetization reversal process in domain walls of bubble lattices in magnetic garnets is investigated visually and photoelectrically. The use of the anisotropic dark-field method allows us to. The technical magnetization and the domain structure of a TbYFe5O12 single crystal have been studied in the temperature region of a spontaneous spin-flip phase transition (SFPT) by magneto-optical method.

It has been found that the character of evolution of domain configuration in a SFPT depends from mechanical stresses in crystal. Fe 3 O 4 NPs with sizes of 10– nm were systematically investigated to reveal the fundamental relationship between the crystal domain structure and the magnetic properties.

Szmaja, W. SEM investigation of the dependence of magnetic domain structure on the thickness of cobalt monocrystals. Journal of Magnetism and Magnetic Materials,– CrossRef Google Scholar.

The magnetic domain structures on the {} plane of magnetite (Fe 3 O 4) below the Verwey transition (T v =K) were studied using a Low‐Temperature Magnetic Force Microscope (LTMFM). At K, domain structures consisted of arrays of °, ° and 71° walls, typical for magnetite with cubic anisotropy. This site uses cookies.

By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy. The dependence of the stability of a spiral domain in an ac magnetic field on the allowable deformations of the domain shape has been investigated within the phenomenological model.

The allowable deformations of the domain are characterized by some set of free parameters from the total number of parameters determining the domain shape.

It has been shown that, in this model, the. Magnetic domain patterns of single crystals of yttrium iron garnet have been studied by optical and x‐ray topographic methods. There is good correspondence between optical photographs and x‐ray topographs of domains.

Investigation of magnetic domain structure in single crystal garnets. By Ernest John. Enhancing Nanoparticle Diffusion on a Unidirectional Domain Wall Magnetic Ratchet. Nano Letters19 (1), DOI: /tt.8b Yulong Bai, Bo Yang, Fei Guo, Qingshan Lu, Shifeng Zhao. Enhanced magnetostriction derived from magnetic single domain structures in cluster-assembled SmCo films.

Novel Magnetic Photonic Crystal Structures for Magnetic Field Sensors and Visualizers Mikhail Vasiliev used in magnetooptical imaging to observe the magnetic domain patterns in magnetic materials, to observe the vortex states in supercon- the stripe- or maze-like domain structure.

In the usual case of a single-layer film sensor, for an. Stress induced modulation of the diffraction angle and efficiency of the light reflected from a stripe-domain magnetic garnet was demonstrated.

The spacing of the magnetic domain was changed using the inverse magnetostriction effect. The sample structure was a piezo actuator/Al reflection layer/magnetic garnet substrate.The article concerns the rarely described magnetic domain structure of Heusler alloys in the case of a single crystal []-oriented Co-Ni-Ga alloy.

The structure of the magnetic domains of the alloy was compared in two states: in the quenched and additionally aged state.The contributions of the different internal energy factors described above is expressed by the free energy equation proposed by Lev Landau and Evgeny Lifshitz inwhich forms the basis of the modern theory of magnetic domains.

The domain structure of a material is the one which minimizes the Gibbs free energy of the material. For a crystal of magnetic material, this is the Landau-Lifshitz.