Results 141 to 150 of about 6,224,082 (341)

Domain wall conductivity in KTiOPO4 crystals

open access: yesAPL Materials, 2017
We study the local ionic conductivity of ferroelectric domain walls and domains in KTiOPO4 single-crystals. We show a fourfold increase in conductivity at the domain walls, compared to that of the domains, attributed to an increased concentration of ...
G. Lindgren, C. Canalias
doaj   +1 more source

Domain wall seeds in CSO-gauged supergravity

open access: yesJournal of High Energy Physics, 2017
Gravitational domain wall solutions in gauged supergravity are often constructed within truncations that do not include vectors. As a consequence the gauge group is only a global symmetry of this truncation. The consistency of the truncation requires the
Juan Diaz Dorronsoro   +2 more
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm   +3 more
wiley   +1 more source

Simulating the Maximum Domain Wall Speed in a Magnetic Nanowire [PDF]

open access: yes, 2006
The dynamics of domain wall motion in permalloy nanowires have been simulated utilizing the Landau-Lifshitz-Gilbert (LLG) equation of motion. The simulation results are presented in terms of the domain wall speed for ranges of the Gilbert damping ...
Kunz, Andrew
core   +1 more source

Electric-field induced domain-wall dynamics: depinning and chirality switching

open access: yes, 2013
We theoretically study the equilibrium and dynamic properties of nanoscale magnetic tunnel junctions (MTJs) and magnetic wires, in which an electric field controls the magnetic anisotropy through spin-orbit coupling.
Alzate, Juan G.   +6 more
core   +1 more source

Domain wall memory: Physics, materials, and devices

open access: yesPhysics reports, 2022
Durgesh Kumar   +9 more
semanticscholar   +1 more source

Dramatic influence of curvature of nanowire on chiral domain wall velocity

open access: yesScience Advances, 2017
The velocity of domain walls driven by chiral spin-orbit torques is up to 10 times faster around right- than left-handed bends. The use of current pulses to move domain walls along nanowires is one of the most exciting developments in spintronics over ...
Chirag Garg   +4 more
semanticscholar   +1 more source

On‐Demand Activation of Thin Alginate Shell Encapsulated Volatile Liquid for Untethered Pneumatic Soft Actuation

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan   +3 more
wiley   +1 more source

Domain wall and three dimensional duality

open access: yesJournal of High Energy Physics, 2018
We discuss 1/2 BPS domain walls in the 3d N=4 $$ \mathcal{N}=4 $$ supersymmetric gauge theory which is self-dual under the 3d mirror symmetry. We find that if a BF-type coupling is introduced, invariance of the BPS domain wall under the duality ...
Minoru Eto   +2 more
doaj   +1 more source

Unconventional domain wall magnetoresistance of patterned Ni/Nb bilayer structures below superconducting transition temperature of Nb

open access: yes, 2021
Scattering of spin-up and spin-down electrons while passing through a ferromagnetic domain wall leads to an additional resistance for transport current, usually observed prominently in constricted magnetic structures.
Barber, Zoe H.   +4 more
core  

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