Magnetic domain walls in constrained geometries

Abstract

Magnetic domain walls have been studied in micrometer-sized Fe20Ni80 elements containing geometrical constrictions by spin-polarized scanning electron microscopy and numerical simulations. By controlling the constriction dimensions, the wall width can be tailored and the wall type modified. In particular, the width of a 180 degree Neel wall can be strongly reduced or increased by the constriction geometry compared with the wall in unconstrained systems.

4 pages, 6 figures

References in corpus (6)

• Real-space observation of current-driven domain wall motion in submicron magnetic wires
• Switching a spin-valve back and forth by current-induced domain wall motion
• Geometrically constrained magnetic wall
• Domain wall propagation in magnetic nanowires by spin polarized current injection
• Very large magnetoresistance in lateral ferromagnetic (Ga,Mn)As wires with nanoconstrictions
• Switching the magnetic configuration of a spin valve by current induced domain wall motion

Cited by in corpus (48)

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• Compact Vortices
• Compact Structures in Standard Field Theory
• New models for two real scalar fields and their kinklike solutions
• Mechanism to induce geometric constriction on kinks and domain walls
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• Fermion bound states in geometrically deformed backgrounds
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• Continuously transforming kinks into compactons in the O(3)-sigma model
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• Kink scattering in the presence of geometric constrictions
• New class of solutions of a generalized $O(3)$-sigma Chern-Simons model
• Self-dual effective compact and true compacton configurations in generalized Abelian Higgs models
• Geometrically constrained multifield models with BNRT solutions
• Maxwell-scalar system and scalar field with impurity: novel approach to find nontrivial solutions
• Quasi-Compact Q-Balls
• Semi-Compact Skyrmion-like Structures
• Manipulating the internal structure of Bloch walls
• Theoretical study of magnetic domain walls through a cobalt nanocontact
• Novel results for kinklike structures and their connections to quantum mechanics
• Super long-range kinks
• Uniqueness of one-dimensional Néel wall profiles
• Differential configurational entropy for multi-field of the ${\varphi }^6$ theory
• Geometrically constrained sine-Gordon field: BPS solitons and their collisions
• Exact BPS double-kinks in generalized ${\varphi }^4$, ${\varphi }^6$ and sine-Gordon models
• A novel connection between scalar field theories and quantum mechanics
• Some of the many uses of scalar fields: kinks, lumps, and geometric constraints
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• Geometrically Constrained Localized Configurations: First-Order Framework and Analytical Solutions
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• Lorentz TEM imaging of stripe structures embedded in a soft magnetic matrix
• Localized structures in three-field models: geometrically constrained configurations and the first-order framework
• Geometrically constrained localized configurations engendering non-topological profile
• Sine-Gordon kink lattice
• Localized structures in two-field systems: exact solutions in the presence of Lorentz symmetry breaking and explicit connection with geometric constraints
• Restricted baby Skyrme-Maxwell theory in a magnetic medium: BPS configurations and some properties
• Geometrically induced phase transitions in two-dimensional dumbbell-shaped domains
• A note about a new class of two-kinks