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Showing 1 to 20 of 479 for “"ferromagnetic"”.
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Simulations of ferromagnetic nano structures
The magnetic properties of nanometre-scale structures are of fundamental scientific interest and have the potential to play a major role in future data storage technologies. In particular, arrays of small magnetic elements, also called bit-patterned media, are one of the most promising candidates …
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Ferromagnetic dynamics in coupled systems
In this work, ferromagnetic thin films coupled strongly to other physical subsystems (magnetic or otherwise) are studied, and the effect this coupling has on their static and dynamic properties is investigated in order to understand both the ferromagnets themselves, and the systems they are coupled …
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The synthesis of a ferromagnetic polymer
The aim of this study was to prepare a ferromagnetic polymer using the design elements of molecular magnets. This involved the preparation of co-polyradicals of phenylacetylenes bearing nitronyl nitroxides and nitro/cyano groups. The magnetic properties of the materials were determined using a …
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Induction heating of circular ferromagnetic plates.
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
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Magnetoelectric Effect in Ferroelectric-Ferromagnetic Heterostructures
The magnetoelectric (ME) effect, a coupling effect between magnetic and electric orders, has been widely investigated, both from a fundamental science perspective and an applications point of view. Magnetoelectric composites with one piezoelectric phase and one magnetostrictive phase can be …
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Current Induced Magnetisation Dynamics in Ferromagnetic Nanowires
Ferromagnetic nanowires are functional and integral constituents in a variety of advanced technologies, including tuneable microwave devices, magnetic storage, spintronics, electromagnetic wave absorbers, noise suppressors, and biomedical applications. Their significance and popularity stem from …
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NOVEL FERROMAGNETIC MATERIALS WITH IMPROVED MECHANICAL PERFORMANCE
<p>"The ductility of intermetallics has long been a hindrance to their broad adaptation despite a significant range of properties such as magnetic, half-metallic, and shape memory behavior. The lack of a general theory for the ductility of intermetallics along with the lack of prior art that …
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Magnetic Logic Gate Using Ferromagnetic Hexagonal Nanodots
A study of magnetic states of equal-sided hexagonal Permalloy nanodots has been conducted via micromagnetics simulation. With various side length, thickness and interior angle, magnetic state has been characterized for all hexagonal nanodots. A new boundary between single domain and vortex state on …
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Analysis of ultra-narrow ferromagnetic domain walls
A mathematical analysis of ultra-narrow ferromagnetic domain walls was undertaken, with graphical plots coded in the programming language TrueBASIC. An intrinsic inter-atomic potential stemming from the breakdown of the continuum approximation of matter is calculated and its contribution to the …
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Orthopaedic applications of ferromagnetic shape memory alloys
Ferromagnetic shape memory alloys (FSMAs) are a new class of magnetic field-actuated active materials with no current commercial applications. By applying a magnetic field of around 0.4 T, they can exert a stress of approximately 1.5 MPa, exhibiting a strain of up to 6%. This thesis evaluates their …
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Equilibrium states of ferromagnetic abelian lattice systems
Ferromagnetic abelian lattice systems are the topic of this paper. Namely, at each site of ZV-invariant lattice is placed a finite abelian group. The interaction is given by any real, negative definite, and translation invariant function on the space of configurations.Algebraic structure of the …
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A dynamic circuit-based model for ferromagnetic materials
… loaded SRM is typically designed to saturate the ferromagnetic material that comprises the stator and rotor of the machine whereas a lightly loaded machine does not. Therefore, the model of the machine should be able to handle both a large range in frequency and input excitation levels of the …
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Ferromagnetic manganites: spin-polarized conduction and competing interactions
Electronic properties of solids are vitally important for modern technology, one may think of microelectronics, magnetic data storage, communication technologies and others. Sometimes, it seems possible to postpone the step of fundamental understanding when starting the application of a new …
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SPIN WAVES AND PHASE TRANSITIONS IN FERROMAGNETIC SUPERLATTICES
… as well as phase transitions in Ising Model for ferromagnetic superlattices are studied. A new method of recurrence relations is used for the first time to study the spin waves or Curie temperatures in ferromagnetic superlattices. Compared with the previous method, such as transfer matrix method, …
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Quantization of spin waves in ferromagnetic Ni80Fe20 nanoring
Regular arrays of oval-shaped permalloy nanorings have been fabricated using deep ultraviolet lithography and their spin dynamicsmeasured by Brillouin light scattering with the magnetic field applied along long (easy) axes of the rings. The dispersionless behavior of the spin wave modes observed …
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Resistivity anomalies for ferromagnetic metals at Curie points
… have investigated the resistivity anomalies of ferromagnetic metals at the Curie point using the itinerant model. The nature of these resistivity anomalies is related to phase transitions of second kind. Current theory describing these anomalies is based on the localized model of the magnetic …
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Ferromagnetic to Mictomagnetic Transition in Iron - Aluminum Alloys
Made available in DSpace on 2014-12-14T16:00:32Z (GMT). No. of bitstreams: 1 7709187.pdf: 5873741 bytes, checksum: cfa19aeb52ebd4b0d3e4d0663deac40b (MD5) Previous issue date: 1976
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