Results 71 to 80 of about 2,536,814 (333)

Possible spin-orbit driven spin-liquid ground state in the double perovskite phase of Ba3YIr2O9 [PDF]

, 2013
We report the structural transformation of hexagonal Ba3YIr2O9 to a cubic double perovskite form (stable in ambient conditions) under an applied pressure of 8GPa at 1273K.
Chou, F. C., Dey, Tusharkanti, Koteswararao, B., Kumar, R., Mahajan, A. V., Omrani, A. A., Ronnow, H. M.   +6 more
core   +2 more sources

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Differentiating between perovskite and double perovskite nanocrystals

, 2023
Perovskite structure takes the empirical formula ABX3, whereas Double perovskites, or elpasolites, are the crystal structures in which the B position in ABX3 is equally occupied by two different cations. The usual compositions of Double perovskite structure are (1-3) type double perovskites, which means that the two B cations have +1 and +3 oxidation ...
Mishra, Pritish, Zhang, Mengyuan, Lam, Yeng Ming, Hippalgaonkar, Kedar   +3 more
openaire   +1 more source

Theory of half-metallic double perovskites. I. Double exchange mechanism [PDF]

Physical Review B, 2013
The double perovskite material \SFMO has the rare and desirable combination of a half-metallic ground state with 100% spin polarization and ferrimagnetic \Tc$\simeq 420$K, well above room temperature. In this two-part paper, we present a comprehensive theoretical study of the magnetic and electronic properties of half metallic double perovskites.
Meetei, O. Nganba, Erten, Onur, Mukherjee, Anamitra, Randeria, Mohit, Trivedi, Nandini, Woodward, Patrick   +5 more
openaire   +2 more sources

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

A brief review of conductivity and thermal expansion of perovskite-related oxides for SOFC cathode

Eurasian Journal of Physics and Functional Materials, 2021
Cathode materials with mixed ion-electron conductivity (MIEC) are necessary for the development of low or intermediate temperature solid oxide fuel cells. Perovskite and perovskite-related materials are promising candidates on this role.
A. V. Nikonov, K. A. Kuterbekov, K. Zh. Bekmyrza, N. B. Pavzderin   +3 more
doaj   +1 more source

Spontaneous Octahedral Tilting in the Cubic Inorganic Caesium Halide Perovskites CsSnX$_3$ and CsPbX$_3$ (X = F, Cl, Br, I)

, 2017
The local crystal structures of many perovskite-structured materials deviate from the average space group symmetry. We demonstrate, from lattice-dynamics calculations based on quantum chemical force constants, that all the caesium-lead and caesium-tin ...
da Silva, E. Lora, Frost, Jarvist M., Skelton, Jonathan M., Walsh, Aron, Yang, Ruo Xi   +4 more
core   +1 more source

Multiferroic double perovskites: Opportunities, issues, and challenges [PDF]

Journal of Applied Physics, 2010
A well-controlled coupled behavior in magnetoelectric materials at room temperature remains challenging. We demonstrate that the self-ordered A2B′B″O6 (e.g., A=La, B′=Mn, and B″=Ni) double perovskites provide a unique alternative opportunity to control and/or to induce such behavior in oxides.
Singh, M. P., Truong, K. D., Jandl, S., Fournier, P.   +3 more
openaire   +2 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

A Bismuth-Halide Double Perovskite with Long Carrier Recombination Lifetime for Photovoltaic Applications.

Journal of the American Chemical Society, 2016
Despite the remarkable rise in efficiencies of solar cells containing the lead-halide perovskite absorbers RPbX3 (R = organic cation; X = Br(-) or I(-)), the toxicity of lead remains a concern for the large-scale implementation of this technology.
Adam H. Slavney, Te Hu, A. Lindenberg, H. Karunadasa   +3 more
semanticscholar   +1 more source