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Showing 1 to 12 of 12 for “"Anisotropy field"”.
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Anisotropy and texture studies in magnetic media
… new extended rotational remanence technique for anisotropy field measurements was developed. The technique is suitable for samples that contain aligned or partially aligned particles and provides both: in-plane anisotropy field distributions and the in-plane anisotropy field. This technique was …
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TRANSVERSE SUSCEPTIBILITY STUDIES OF RECORDING MEDIA
… reversal dominant in the remaining systems. The anisotropy peaks measured using the non-linear IS were found to be less dependent on sample texture than those of the traditional linear measurement. In particular the anisotropy peaks of the non-linear TS for incoherently reversing systems appeared …
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A Numerical Study of Dynamic Micromagnetics
… work focuses on studying the four micromagnetic fields, exchange field, anisotropy field, demagnetization field and applied field. Based on the related algorithms for programming given, a set of software for micromagnetics calculation is developed successfully in C++. Several attempts are also …
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Magnetic resonance in amorphous iron-nickel alloys
… one, which is due to the existence of a static anisotropy field in the spin-glass state. The anisotropic energy K(T) is found to be proportional to (I-T/Tf). The relaxation rate can be fitted to a power-law and an Arrhenius Law temperature behaviors, however only power-law fitting gives …
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ΜΕΛΕΤΗ ΔΟΜΙΚΩΝ ΚΑΙ ΜΑΓΝΗΤΙΚΩΝ ΙΔΙΟΤΗΤΩΝ ΣΕ ΥΛΙΚΑ ΜΟΝΙΜΩΝ ΜΑΓΝΗΤΩΝ: ΟΙ ΥΠΟΚΑΤΕΣΤΗΜΕΝΟΙ ΜΕ ΖΝ ΕΞΑΓΩΝΙΚΟΙ ΦΕΡΙΤΕΣ ΜΝ2-W
… MEASUREMENTS OF HIGH TEMPERATURES. HIGH FIELD (UP TO 180 KOE) MAGNETIZATION MEASUREMENTS HAVE BEEN PERFORMED IN THE TEMPERATURE RANGE 4.2- 300K. A THOROUGH ANALYSIS OF THE MAGNETIZATION CURVES ACCORDING TO THE LAW OF APPROACH TO SATURATION PROVIDED THE VALUES OF SATURATION MAGNETIZATION …
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Micromagnetic analysis of co-based magnetic nanostructures.
… frequently exhibit perpendicular switching fields less than the anisotropy field and a different angular dependence than theoretically expected. Micromagnetic simulations were performed, which included multiple elements per grain and magnetostatic interactions between elements. Two likely …
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Micromagnetic modelling of thin film media
… The grains were assumed to have uniaxial anisotropy and the magnetisation within the grain was assumed to vary throughout. To achieve non-uniformity, the grains were divided into triangles and the magnetisation within each triangle was assumed to vary linearly. The effect on the …
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Current-induced torque driven ferromagnetic resonance in magnetic microstructures
… can be parameterised by an effective magnetic field. By analysing the lineshape of the measured FMR signals, the magnitude and orientation of this effective field have been accurately determined. Moreover, the current-induced fields in these ferromagnetic materials have been observed with …
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Surface and Interface Magnetism in Nanostructures and Thin Films
… a method for directly probing the magnetic anisotropy of materials. Au and Fe3O4 synthesized together into three different nanoparticle configurations and ranging in size for 60 nm down to 9nm are used to study how the size, shape, and interfaces affect the most fundamental properties of …
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Transverse susceptibility measurements on particulate recording media
… main use of this measurement is to determine the anisotropy field (Ilk) of a material which is one of its intrinsic properties. Previous theoretical modelling of Xi was reviewed and a description given of the apparatus constructed to carry out the measurements. Xi was measured on a variety of …
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Structural and magnetic characterization of Nd-based Nd-Fe and Nd-Fe-Co-Al metastable alloys
… The measurements of initial magnetization, field dependence of coercivity, and temperature dependence of coercivity suggest the Stoner-Wohlfarth type magnetization reversal process for the hard magnetic A1. The values of anisotropy constant are estimated by fitting the magnetization data to …
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Magnetic Properties Of Sputter Deposited Fe-based Amorphous Thin Films For Resonator Application
… the magnetic properties, including induced anisotropy and magnetostriction, of the as-deposited and annealed films using an M-H Looper. The chemical composition of the films was characterized using secondary ion mass spectroscopy (SIMS). The physical thickness of the films was determined by …