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Showing 1 to 20 of 33 for “"Permalloy"”.
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Atomic structure characterization for YIG/ permalloy heterostructures
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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A Study of Permalloy (Nickel(81)iron(19)) Nanoparticles as Possible Qubits
Permalloy nanoparticles are grown in a custom built inert gas condensation system with magnetron sputtering. By careful control of the processing parameters during nucleation, the nanoparticles can be grown with the desired diameter of 5 nm and a narrow size distribution with a standard deviation …
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The impact of a nickel-chromium buffer layer on the magnetoresistance of Permalloy
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1999.
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A method of grading molybdenum permalloy toroidal cores to predetermine required turns for a given inductance
Molybdenum-permalloy powder cores are manufactured to fall within required permeability limits. However, these limits are sufficiently broad to cause sizeable labor loss in adjusting the number of turns for required inductance values; for example, an Arnold Engineering Company A-930157-2 core with …
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Microstructure-based FE Modeling and Measurements of Magnetic Properties of Polymer Matrix-Metal Composites
… The most common metal alloy used is nickel-iron (permalloy) and Metglas. Since existing modeling methods are limited in (a) that multiphasic composites cannot be utilized and (b) the volume fraction of magnetic particles must be low, this investigation was designed to utilize FE (finite element) …
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Magnetic Logic Gate Using Ferromagnetic Hexagonal Nanodots
… 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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Spin Currents in Organic Semiconductors
… spin injection from a ferromagnetic metal, permalloy (Ni81Fe19), into organic small molecules and conjugated polymers as well as to quantify the spin injection efficiency. The results highlight the importance of structural properties of organic semiconductors at the interface to permalloy. …
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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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Magnetic microparticle trapping and mechanical excitation using domain walls in magnetic microstructures
… fluid to measure particle size. Nickel-Iron (Permalloy) rings, made using electron beam lithography, served as the tracks for nucleating and moving DWs, and Invitrogen Dynabeads M-270 magnetic beads were used for the experiment. Tween-20 surfactant in solution and SiO2 capping layers for the …
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Modeling Shape Effects in Nano Magnetic Materials With Web Based Micromagnetics
… Shape anisotropy has been introduced to a permalloy ring by adding a cross-tie structure with various widths. The in-plane hysteresis loop and reversal behavior have no notable difference in direction parallel to the cross-tie, but greatly changed in perpendicular and diagonal directions. …
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Observation and characterisation of magnetisation ripple using Lorentz transmission electron microscopy
… moment alternative for the more commonly used permalloy composition of Ni80Fe20 in hard disk (HDD) read-write head design. In this work a conventional TEM, and LTEM study was undertaken to investigate the effect of ultra-thin Ni79Fe21 seed layers on the physical and magnetic properties of …
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Um aðferðir til að mæla misáttun eðlisviðnáms í þunnum húðum
… mismunandi sýni, þrjú einsátta og tvö misátta permalloy sýni. Ýmsir gallar fylgja notkun aðferðanna, til dæmis hafa aðferðirnar tiltölulega háa óvissu sem kemur frá lengdarmælingunum. Áhrif staðsetningar fimmta snertiskeytisins í aðferð Kleiza er skoðuð og hentugasta staðsetningin er fundin til …
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Characterisation of focused ion beam nanostructures by transmission electron microscopy
… anisotropy direction can be altered in NiFe (Permalloy) films, whilst for Co/Pd multilayers, ion irradiation results in a transition from perpendicular to in-plane magnetisation. This ability to tailor magnetic properties in a controlled manner can be used as a tool for nanoscale patterning. …
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Magnetic Excitations in Cylindrical Multilayered Nanostructures
… are presented for ferromagnets, such as Ni, Permalloy, and EuS, and for antiferromagnets, such as GdAlO3 and MnF2.
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Strong coupling between microwave photons and nanomagnet magnons
… mode and a Kittel mode in nanometer thick Permalloy wires. Strong magnon-photon coupling is achieved with number of spins in the order of 1013, three orders of magnitude lower compared with previous studies. Moreover, we confirm the scaling law of coupling strength as a function of spin …
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