Results 61 to 70 of about 2,452,929 (296)

Magneto‐Ionic Devices With Polymer‐Based Electrolytes

open access: yesAdvanced Functional Materials, EarlyView.
Polymer electrolytes are introduced for magneto‐ionic devices based on hydroxide and hydrogen ions. The magneto‐ionic effect results in a pronounced voltage‐controlled variation of coercivity in both devices. The switching speed is in the range of 100 ms.
Markus Gößler   +3 more
wiley   +1 more source

Physics of Ferroelectric Wurtzite Al1−xScxN Thin Films

open access: yesAdvanced Electronic Materials
Al1−xScxN emerges as a revolutionary ferroelectric material within the III‐N family. It combines exceptional switchable polarization (80–165 µC cm−2), highly tunable coercive fields (1.5–6.5 MV cm−¹), and a wide bandgap (4.9–5.6 eV).
Feng Yang
doaj   +1 more source

Unexpected Asymmetric Mn‐Sb Site Mixing and Reentrant Spin‐Glass State of MnSb2Te4

open access: yesAdvanced Functional Materials, EarlyView.
MnSb2Te4 is an intrinsic magnetic topological insulator. Its properties are extraordinarily sensitive to tiny defects, making structural studies essential for understanding how magnetism and topology work together. This work shows that Mn can be unevenly distributed within the crystal and how that disorder is linked to a newly reported spin‐glass state
Gustavo Chavez Ponce de Leon   +7 more
wiley   +1 more source

Prophet Muhammad and the Market Governance of Medina: The Institutional Framework of Price Stability in Historical Perspective

open access: yesHamidah
Price instability and exploitative practices such as hoarding and monopoly characterized the Medina market during the early transitional phase of Islam.
Taufik Wahyu Nugroho   +4 more
doaj   +1 more source

On the problem of determining the parameter of an elliptic equation in a Banach space

open access: yesNonlinear Analysis, 2014
The boundary value problem of determining the parameter of an elliptic equation -u''(t)+Au(t)=f(t)+p (0⩽t⩽T), u(0)=φ, u(T)=ψ, u(λ)=ξ ...
Allaberen Ashyralyev   +1 more
doaj   +1 more source

A Miniaturized Autonomous Thermomagnetic Generator

open access: yesAdvanced Functional Materials, EarlyView.
Micro, autonomous and high power thermomagnetic generator operating between a heat dissipator and a processor. ABSTRACT Thermomagnetic generators (TMG) are promising devices for converting low‐grade waste heat into electricity. Self‐actuation using permanent magnets is the key to autonomy.
Morgan Almanza   +11 more
wiley   +1 more source

On well-posedness of the nonlocal boundary value problem for parabolic difference equations

open access: yesDiscrete Dynamics in Nature and Society, 2004
We consider the nonlocal boundary value problem for difference equations (uk−uk−1)/τ+Auk=φk, 1≤k≤N, Nτ=1, and u0=u[λ/τ]+φ ...
A. Ashyralyev   +2 more
doaj   +1 more source

Least-Squares Proper Generalized Decompositions for Weakly Coercive Elliptic Problems [PDF]

open access: yes, 2017
Proper generalised decompositions (PGDs) are a family of methods for efficiently solving high-dimensional PDEs which seek to find a low-rank approximation to the solution of the PDE a priori.
Thomas L. D. Croft   +3 more
core   +1 more source

Proximity‐Tuned Magnetic and Transport Anomalies in All‐Epitaxial Fe5−xGeTe2/WSe2 Van der Waals Heterostructures

open access: yesAdvanced Functional Materials, EarlyView.
All‐epitaxial and scalable ferromagnetic/non‐magnetic Fe5−xGeTe2/WSe2 van der Waals (vdW) heterostructures exhibiting room‐temperature magnetism and perpendicular magnetic anisotropy (PMA) are realized. The system displays proximity‐tuned magnetic anisotropy, thickness‐dependent unconventional Hall effects, and temperature‐dependent sign reversal of ...
Hua Lv   +15 more
wiley   +1 more source

Behavioral Patterns of Children Involved in Bullying Episodes

open access: yesFrontiers in Psychology, 2018
This study applied a systematic observation strategy to identify coercive behavioral patterns in school environments. The aim was to describe stability and change in the behavioral patterns of children identified as victims of bullying.
Carlos V. Santoyo, Brenda G. Mendoza
doaj   +1 more source

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