Results 41 to 50 of about 968,777 (204)

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Study on the Preparation and Denitration Performance of Ce Modified La–Mn Perovskite Catalyst

工程科学与技术, 2021
In order to improve the denitration performance of La–Mn perovskite catalyst, a series of Ce modified perovskite La–Mn composite oxide catalysts were synthesized by citric acid sol-gel method.
Jiaxiu GUO, Xueke SHI, Aidong FAN, Jianjun LI, Yinghao CHU, Shandong YUAN   +5 more
doaj  

Low Dark Current and Performance Enhanced Perovskite Photodetector by Graphene Oxide as an Interfacial Layer

Nanomaterials, 2022
Organic-inorganic hybrid perovskite photodetectors are gaining much interest recently for their high performance in photodetection, due to excellent light absorption, low cost, and ease of fabrication. Lower defect density and large grain size are always
Ali Hassan, Muhammad Azam, Yeong Hwan Ahn, Muhammad Zubair, Yu Cao, Abbas Ahmad Khan   +5 more
doaj   +1 more source

Electronic spin state of ferric iron in Al-bearing perovskite in the lower mantle [PDF]

, 2005
We investigate the effect of pressure on the electronic spin state of ferric iron on Al-bearing MgSiO3-perovskite using first-principle computations. Ferric iron (6.25 mol%) and Al ( 6.25 mol%) substitute for Mg and Si respectively.
Price, GD, Li, Li, Weidner, Donald J., Li, L, Brodholt, JP, Weidner, DJ, Alfredsson, M, Alfredsson, Maria, Stackhouse, S, Brodholt, John P., Stackhouse, Stephen, Price, G. David   +11 more
core   +1 more source

Nanoscale Spatial Tuning of Superconductivity in Cuprate Thin Films via Direct Laser Writing

Advanced Functional Materials, EarlyView.
Maskless direct laser writing enables local control of oxygen stoichiometry in epitaxial YBCO thin films under ambient conditions. Sub‐micrometer grayscale patterns with tunable optical response and superconducting transport properties are achieved.
Irene Biancardi, Valerio Levati, Jordi Alcalà, Thomas Günkel, Nicolas Lejeune, Riccardo Girelli, Alejandro V. Silhanek, Valeria Russo, Narcís Mestres, Daniela Petti, Anna Palau, Edoardo Albisetti   +11 more
wiley   +1 more source

Unravelling the role of B-site cation enrichment and Co–Fe exsolution in LaAl0.90Co0.05Fe0.05O3 on oxygen reduction electrocatalysis

JPhys Energy
In the present study, we report the exsolution of CoFe nanoalloy nanoparticles from Co and Fe co-doped lanthanum aluminate perovskite oxide, LaAl _0.90 Co _0.05 Fe _0.05 O _3 , and assess the perovskite oxide as an oxygen reduction reaction (ORR ...
Selda Ozkan, SeoJin Kim, Miroslawa Pawlyta, Anna Kroner, Oxana V Magdysyuk, Cristian Savaniu, John T S Irvine   +6 more
doaj   +1 more source

Numerical simulation of lead-free MASnI3 perovskite/silicon heterojunction for solar cells and photodetectors

Results in Surfaces and Interfaces
Lead free n-type doped methyl ammonium tin iodide (MASnI3) perovskite/p-Silicon heterojunction (HJ) for solar cells and photodetectors are simulated using AFORS-HET automat simulation software.
Chandan Yadav, Sushil Kumar
doaj   +1 more source

CaSiO3 perovskite at lower mantle pressures [PDF]

, 2005
We investigate by first-principles the structural behavior of CaSiO3 perovskite up to lower mantle pressures. We confirm that the cubic perovskite modification is unstable at all pressures.
Price, GD, Wentzcovitch, R, Caracas, R, Brodholt, J   +3 more
core  

A Thermodynamic Model of Antiferroelectics and Its Application to Electric Field Induced Antiferroelectric‐Ferroelectric Transition in PbZrO3

Advanced Functional Materials, EarlyView.
A thermodynamic model that incorporates ferroelectric, antiferroelectric, and antiferrodistortive orders of PbZrO3${\rm PbZrO}_3$ is established and parameterized based on experimental measurements and first‐principles calculations. We derive a Clapeyron‐like equation for describing the temperature‐dependence of critical electric fields for the ...
Zhiyang Wang, Guodong Zhao, Aiden Ross, Long‐Qing Chen   +3 more
wiley   +1 more source

Operando Tracking of Oxygen‐Vacancy Dynamics and Negative Capacitance in Ca‐Doped BiFeO3

Advanced Functional Materials, EarlyView.
Operando electrochemical impedance spectroscopy, combined with electrocoloration, enables a direct correlation between real‐space ionic redistribution and the corresponding frequency‐domain electrical response. In lateral Ca‐doped BiFeO3 devices, time‐resolved impedance snapshots capture the evolution from bulk‐dominated mixed conduction to an ...
Jeonghun Suh, Heung‐Sik Park, Jong‐Sook Lee, Chan‐Ho Yang   +3 more
wiley   +1 more source