Results 71 to 80 of about 17,598 (258)
Advanced Functional Materials, EarlyView.Ferroelectricity in thin HfO2‐based films offers great possibilities for next‐generation neuromorphic memory devices. There, the response to subcoercive voltage signals is driven by the movement of mobile interfaces and their interaction with crystal defects – a yet rather unexplored aspect, which we shed light on and gain new insights into the complex
Maximilian T. Becker +11 more
wiley +1 more source
Geometric Thinking of Future Mathematics Teachers in Mozambique: a case study from Rovuma University
Tangram, 2020 We developed the research with 53 students, future math teachers, from the 1st year of the Degree in Mathematics Teaching at Rovuma University. The aim was to identify the level of development of geometric thinking of future mathematics teachers. To this
Rosalino Subtil Chicote +1 more
doaj +1 more source
The parameter space of cubic laminations with a fixed critical leaf
, 2016 Thurston parameterized quadratic invariant laminations with a non-invariant lamination, the quotient of which yields a combinatorial model for the Mandelbrot set. As a step toward generalizing this construction to cubic polynomials, we consider slices of
Blokh, Alexander +3 more
core +1 more source
Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry
Advanced Functional Materials, EarlyView.In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite +5 more
wiley +1 more source
LUMATMathematics teachers ought to possess solid knowledge of different school mathematics topics. Though classification of quadrilaterals (‘House of Quadrilaterals’) is an important and integral part of geometry curricula worldwide, research reports on ...
Ana Kuzle
doaj +1 more source
SYNTHESIS OF CERTAIN MECHANISMS WHICH GENERATE LUNULES OVER POLYGONS WITH 5 SIDES [PDF]
Fiabilitate şi Durabilitate, 2016 A synthesis for a mechanism relying on a sequence of articulated quadrilaterals which plot lunules along a penthagon is made. The plotting is successful. The speeds of plotting points are neither equal, nor constant.
Iulian POPESCU, Ludmila SASS
doaj
Ferroelectricity in Antiferromagnetic Wurtzite Nitrides
Advanced Functional Materials, EarlyView.We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa +3 more
wiley +1 more source
Acta Crystallographica Section E, 2011 Gray–green single crystals were obtained under high-pressure, high-temperature hydrothermal conditions. A refinement of atom occupancies gave the composition Li3.68Cu2+Fe3+(Cu0.55Li0.45)2Fe2+0.15(PO4)4.
Shailesh Upreti +3 more
doaj +1 more source
Ambitoric geometry II: Extremal toric surfaces and Einstein 4-orbifolds [PDF]
, 2013 We provide an explicit resolution of the existence problem for extremal Kaehler metrics on toric 4-orbifolds M with second Betti number b2(M)=2. More precisely we show that M admits such a metric if and only if its rational Delzant polytope (which is a ...
Apostolov, Vestislav +2 more
core +1 more source
Constructing Ionic Fast Diffusion Channels on LiNi0.5Mn1.5O4 for Lithium‐Ion Batteries
Advanced Functional Materials, EarlyView.A dual‐modification strategy is developed for LNMO cathode, where bulk Ti doping stabilizes the oxygen framework and simultaneously drives the in situ formation of LaTi2O6 nano‐islands as ion diffusion channels on (111) surfaces, enabling high‐rate capacity (∼100 mAh g−1 at 30 C) and excellent cycling retention (87.8% after 1000 cycles).
Xinyi Zhang +10 more
wiley +1 more source