Results 81 to 90 of about 7,370 (261)

Local stability and a renormalized Newton Method for equilibrium liquid crystal director modeling [PDF]

, 2012
We consider the nonlinear systems of equations that result from discretizations of a prototype variational model for the equilibrium director field characterizing the orientational properties of a liquid crystal material.
Gartland, Jr, E.C., Ramage, Alison
core  

Effects of interdot dipole coupling in mesoscopic epitaxial Fe(100) dot arrays [PDF]

, 2001
The domain structure and the coercivity of epitaxial Fe(100) circular dot arrays of different diameters and separations have been studied using magnetic force microscopy (MFM) and focused magneto-optical Kerr effect (MOKE).
Bland, J.A.C., Cambril, E., Chen, Y., Gardiner, S.M., Hirohata, A., Klaui, M., Lopez-Diaz, L., Rothman, J., Rousseaux, F., Tselepi, M., Xu, Y.B.   +10 more
core   +1 more source

Micromagnetic tomography: Numerical libraries

Computers & Geosciences
Micromagnetic tomography (MMT) is an emerging technique in rock and paleomagnetism to determine individual magnetic moments of tomographically defined magnetic source regions within a natural sample by means of surface scans of the magnetic field above the sample.
Cortés-Ortuño, David, Out, Frenk, Kosters, Martha E., Fabian, Karl, de Groot, Lennart V.   +4 more
openaire   +2 more sources

THIN LAYERS IN MICROMAGNETISM [PDF]

Mathematical Models and Methods in Applied Sciences, 2001
In this paper we study the solutions of micromagnetism equation in thin domain both in the stationary and in the time-dependent case. We prove that the magnetic field induced by the magnetisation behaves like the projection of the magnetic moment on the normal to the domain, both for a flat and a non-flat domain.
openaire   +2 more sources

Nonlinear Strain‐Mediated Magnetoelectric Coupling in Sub‐Microscale Ni/BPZT Thin‐Film Devices

Advanced Electronic Materials, EarlyView.
Sub‐micrometer Ni/BPZT thin‐film magnetoelectric devices with lateral gates enable localized, low‐voltage strain control of magnetization. By combining anisotropic magnetoresistance, nitrogen‐vacancy magnetometry, multiphysics strain simulations, and micromagnetic modelling, the study quantitatively links ferroelectric strain hysteresis to magnetic ...
Fanfan Meng, Emma Van Meirvenne, Federica Luciano, Xiangyu Wu, Yves Deblock, Kaustuv Banerjee, Peter Rickhaus, Florin Ciubotaru, Christoph Adelmann   +8 more
wiley   +1 more source

Micromagnetic Determination of the FORC Response of Paleomagnetically Significant Magnetite Assemblages

Geochemistry, Geophysics, Geosystems
Micromagnetic modeling allows the systematic study of the effects of particle size and shape on the first‐order reversal curve (FORC) magnetic hysteresis response for magnetite particles in the single‐domain (SD) and pseudo‐single domain (PSD) particle ...
Lesleis Nagy, Roberto Moreno, Adrian R. Muxworthy, Wyn Williams, Greig A. Paterson, Lisa Tauxe, Miguel A. Valdez‐Grijalva   +6 more
doaj   +1 more source

Magnetic free energy at elevated temperatures and hysteresis of magnetic particles

, 2001
We derive a free energy for weakly anisotropic ferromagnets which is valid in the whole temperature range and interpolates between the micromagnetic energy at zero temperature and the Landau free energy near the Curie point T_c.
Brown, Bulaevskii, Bulaevskii, D.A. Garanin, Garanin, Garanin, Garanin, Garanin, H. Kachkachi, Hartl-Malang, Kötzler, Kötzler, Landau, Stoner, Stoner, Wernsdorfer   +15 more
core   +1 more source

Harnessing Digital Microstructure for Simulation‐Guided Optimization of Permanent Magnets

Advanced Intelligent Discovery, EarlyView.
An experimental‐to‐computational workflow is presented that transforms experimental 3D focused ion beam‐scanning electron microscopy data into a simulation‐ready digital microstructure for multiphase functional materials. Using heavy‐rare‐earth‐free Nd–Fe–B magnets as a model system, the approach quantifies grain connectivity across complex secondary ...
Nikita Kulesh, Anton Bolyachkin, Hajime Nakamura, Tadakatsu Ohkubo, Hossein Sepehri‐Amin   +4 more
wiley   +1 more source

Modeling the collective magnetic behavior of highly-packed arrays of multi-segmented nanowires

New Journal of Physics, 2016
A powerful model to evaluate the collective magnetic response of large arrays of segmented nanowires comprising two magnetic segments of dissimilar coercivity separated by a non-magnetic spacer is introduced.
S Agramunt-Puig, N Del-Valle, E Pellicer, J Zhang, J Nogués, C Navau, A Sanchez, J Sort   +7 more
doaj   +1 more source

Micromagnetic Study on the Magnetization Reversal of Barium Hexaferrite (BaFe12O19) Thin Film

Makara Journal of Science, 2018
This study investigates a magnetization reversal mechanism based on the hysteresis curve of Barium Hexaferrite (BFO) thin film by micromagnetic simulation through parallel and perpendicular magnetization directions along the axes.
Dede Djuhana, Dita Oktri, Candra Kurniawan   +2 more
doaj   +1 more source