Results 41 to 50 of about 2,319,344 (302)

Effect of sintering temperature on magnetoelectric coupling in 0.2Ni0.9Zn0.1Fe2O4-0.8Ba0.9Sr0.1TiO3 composite ceramics [PDF]

open access: yesProcessing and Application of Ceramics, 2020
Magnetoelectric composites have attracted much attention due to their intriguing physical properties and potential applications. They might have strong magnetoelectric coupling effect above room temperature, but it mainly depends on the sintering ...
Yu Juan, Bai Lang, Gao Rongli
doaj   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand   +13 more
wiley   +1 more source

Stability and coercivity for toric polarizations

open access: yes, 2016
20 pages. We place the slope formula as the main theorem, in view of the previous research. Accordingly, presentations are fixed and Related discussions are added.
openaire   +2 more sources

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

open access: yesAdvanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen   +12 more
wiley   +1 more source

Embedded Ferroelectric Nanoclusters Can Drive Polarization Reversal in a Non‐Ferroelectric Polar Film via the Proximity Effect

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska   +5 more
wiley   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

open access: yesAdvanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang   +12 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

The Difference Problem of Obtaining the Parameter of a Parabolic Equation

open access: yesAbstract and Applied Analysis, 2012
The boundary value problem of determining the parameter 𝑝 of a parabolic equation 𝜐(𝑡)+𝐴𝜐(𝑡)=𝑓(𝑡)+𝑝(0≤𝑡≤1),𝜐(0)=𝜑,𝜐(1)=𝜓 in an arbitrary Banach space 𝐸 with the strongly positive operator 𝐴 is considered.
Charyyar Ashyralyyev, Oznur Demirdag
doaj   +1 more source

Atom Probe Tomography as an Emerging Tool for Understanding Defect‑Driven Mechanisms in HfO2‑Based Ferroelectrics

open access: yesAdvanced Functional Materials, EarlyView.
This Perspective highlights atom probe tomography as a powerful tool for understanding the atomic‐scale defect chemistry in HfO2‐based ferroelectrics. 3D mapping of dopants, point defects, and interface chemistry can provide new insight into defect‐driven mechanisms underpinning the ferroelectricity in the system and guide the design of more reliable ...
Kasper Hunnestad   +3 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

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