Results 21 to 30 of about 10,533 (264)

Soft chemical control of the crystal and magnetic structure of a layered mixed valent manganite oxide sulfide

open access: yesAPL Materials, 2015
Oxidative deintercalation of copper ions from the sulfide layers of the layered mixed-valent manganite oxide sulfide Sr2MnO2Cu1.5S2 results in control of the copper-vacancy modulated superstructure and the ordered arrangement of magnetic moments carried ...
Jack N. Blandy   +11 more
doaj   +1 more source

Perovskite nanocrystals for energy conversion and storage

open access: yesNanophotonics, 2019
The high demand for energy consumption in everyday life, and fears of climate change are driving the scientific community to explore prospective materials for efficient energy conversion and storage.
Kostopoulou Athanasia   +3 more
doaj   +1 more source

Structural phase relations in perovskite-structured BiFeO3-based multiferroic compounds [PDF]

open access: yesJournal of Advanced Ceramics, 2013
In this review, the state of the art in understanding the structural phase relations in perovskite-structured BiFeO3-based polycrystalline solid solutions is presented and discussed. Issues about the close relation between the structural phase and overall physical properties of the reviewed systems are pointed out and discussed.
Freitas, Valdirlei Fernandes   +7 more
openaire   +1 more source

DFT analogue of prospecting the spin-polarised properties of layered perovskites Ba2ErNbO6 and Ba2TmNbO6 influenced by electronic structure

open access: yesScientific Reports, 2022
Since the unexpected accelerated discovery of half-metallic perovskites is continuously on the rise both from basic sciences and application-oriented sides.
Saveer Ahmad Khandy, Dinesh C. Gupta
doaj   +1 more source

Accelerated design of photovoltaic Ruddlesden–Popper perovskite Ca6Sn4S14−xOx using machine learning

open access: yesAPL Materials, 2020
Ruddlesden–Popper (R–P) phase layered chalcogenide perovskites had attracted broad interest as potential lead-free high-performance photovoltaic absorbers.
Junjie Hu   +4 more
doaj   +1 more source

First-principles calculation of the electronic and optical properties of Gd2FeCrO6 double perovskite: Effect of Hubbard U parameter

open access: yesJournal of Materials Research and Technology, 2021
We have synthesized Gd2FeCrO6 (GFCO) double perovskite which crystallized in monoclinic structure with P21/n space group. The UV–visible and photoluminescence spectroscopic analyses confirmed its direct band gap semiconducting nature.
Subrata Das, M.D.I. Bhuyan, M.A. Basith
doaj   +1 more source

High-temperature protonic conductors with perovskite-related structures

open access: yesSolid State Ionics, 1995
Abstract The various perovskite-structured oxides found to be high-temperature protonic conductors are reviewed. They fall into two groups: the simple or ABO3 types and the complex (or mixed) types of formula A2B′B″O6 and A3B′B2″O9. Some microstructural features observed by TEM and electron diffraction are pointed out. A simple “first-order” model is
A.S. Nowick, Yang Du
openaire   +1 more source

A Dislocation Perspective on Strength and Toughness in Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

open access: yesAdvanced 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

Dielectric Relaxation Phenomenon in Ferroelectric Perovskite-related Structures [PDF]

open access: yes, 2010
The dielectric relaxation phenomenon in ferroelectric materials reflects the delay (time dependence) in the frequency response of a group of dipoles when submitted to an external applied field. When an alternating voltage is applied to a sample, the dipoles responsible for the polarization are no longer able to follow the oscillations of the electric ...
Aim Peliz-Barranco   +1 more
openaire   +1 more source

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