Results 11 to 20 of about 21,618 (269)

Benefit of high-pressure structure on sodium transport properties: Example with NaFeF3 post-perovskite

open access: yesOpen Ceramics, 2021
In the search of promising Na-ion cathode materials, high-pressure synthesis method was applied to obtain sodium iron fluoride NaFeF3 with the post-perovskite lamellar structure. A two-step synthesis was performed: first, the Pnma orthorhombic perovskite
Kevin Lemoine   +6 more
doaj   +1 more source

The complex oxides with octahedral structures: Existence areas and phase transitions [PDF]

open access: yesJournal of Advanced Dielectrics, 2020
The experimental and calculated data on the existence of complex oxides in solid state with the octahedral structures of four families, namely perovskites, Bi-containing layered perovskite-like ones, tetragonal tungsten bronzes and pyrochlores, and about
G. A. Geguzina
doaj   +1 more source

Structure and electrical properties of Ba(In0.5Nb0.5)1-xTixO3 ceramics [PDF]

open access: yesProcessing and Application of Ceramics, 2017
Lead-free Ba(In0.5Nb0.5)1-xTixO3 (0 ≤ x ≤ 1) ceramics was synthesized using a standard high temperature solidstate reaction method and sintered at 1400 °C/4 h (except the pure BaTiO3 which was sintered at 1300 °C/4 h). The ceramics was characterized by X-
Kumar P. Chandra   +3 more
doaj   +1 more source

Multiferroic Compounds with Double-Perovskite Structures [PDF]

open access: yesMaterials, 2011
New multiferroic compounds with double-perovskite structures were synthesized. Bi2NiMnO6 was synthesized in bulk form by high-pressure synthesis and also in a thin-film form by epitaxial growth. The material showed both ferromagnetic and ferroelectric properties, i.e., the multiferroic property at low temperature.
Shimakawa, Yuichi   +2 more
openaire   +2 more sources

Antimony Potassium Tartrate Stabilizes Wide-Bandgap Perovskites for Inverted 4-T All-Perovskite Tandem Solar Cells with Efficiencies over 26%

open access: yesNano-Micro Letters, 2023
Highlights A versatile material-antimony potassium tartrate is added to wide-bandgap perovskite cells for the first time. Inverted wide-bandgap perovskite solar cells with a structure of ITO/MeO-2PACz/perovskite/C60/ALD-SnO2/Cu yield a champion power ...
Xuzhi Hu   +9 more
doaj   +1 more source

Post-perovskite Transition in Anti-structure [PDF]

open access: yesScientific Reports, 2016
AbstractThe discovery of the post-perovskite transition, which is the structural transition from the perovskite to post-perovskite structure in MgSiO3 under pressure, has aroused great interests in geosciences. Despite of previous extensive studies, key factors of the post-perovsktie transition are still under hot debate primarily due to the big ...
Bosen Wang, Kenya Ohgushi
openaire   +2 more sources

Study of gadolinium aluminate nanoparticles with perovskite structure prepared by citric acid chelation method

open access: yesMaterials Research Express, 2020
Gadolinium aluminate (GdAlO _3 , GAP) is a rare earth compound with perovskite structure. Its optical isotropic structure prevents the defects of refractive index difference in any direction.
Shiyu Dai   +7 more
doaj   +1 more source

Surface Reconstruction of Perovskites for Water Oxidation: The Role of Initial Oxides’ Bulk Chemistry

open access: yesSmall Science, 2022
Developing highly active electrocatalysts for oxygen evolution reaction (OER) is crucial for the scalable production of renewable hydrogen fuels by water electrolysis.
Haiyan Li   +6 more
doaj   +1 more source

Exciton Fine Structure in Perovskite Nanocrystals [PDF]

open access: yesNano Letters, 2019
The bright emission observed in cesium lead halide perovskite nanocrystals (NCs) has recently been explained in terms of a bright exciton ground state [ Becker et al. Nature 2018 , 553 , 189 - 193 ], a claim that would make these materials the first known examples in which the exciton ground state is not an optically forbidden dark exciton.
Peter C. Sercel   +5 more
openaire   +3 more sources

Structural changes and band gap tunability with incorporation of n-butylammonium iodide in perovskite thin film

open access: yesHeliyon, 2020
The current work presents structural change and band gap tunability using hybrid organic-inorganic perovskite with the incorporation of long chain ammonium halide.
Leong Wei Xian Rebecca   +3 more
doaj   +1 more source

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