Results 81 to 90 of about 4,028,267 (344)

Theory of Half-Metallic Ferrimagnetism in Double Perovskites

Physical Review Letters, 2011
We present a comprehensive theory of the temperature- and disorder-dependence of half-metallic ferrimagnetism in the double perovskite Sr$_2$FeMoO$_6$ (SFMO) with $T_c$ above room temperature. We show that the magnetization $M(T)$ and conduction electron polarization $P(T)$ are both proportional to the magnetization $M_S(T)$ of localized Fe spins.
Erten, Onur, Meetei, O. Nganba, Mukherjee, Anamitra, Randeria, Mohit, Trivedi, Nandini, Woodward, Patrick   +5 more
openaire   +4 more sources

Sub‐1 ms Optoelectronic Synapse Based on {ZnCdO/ZnO} Multilayer Structure for High‐Speed Neuromorphic Vision Systems

Advanced Functional Materials, EarlyView.
Eu‐doped {ZnCdO/ZnO} structures grown on Si are developed, showcasing dual‐functionality controlled by europium doping. While high europium concentration transforms the device into an ultrafast, self‐powered photodetector, low‐doped structures can be used as an optoelectronic synapse.
Igor Perlikowski, Eunika Zielony, Adrian Kaim, Ewa Przeździecka   +3 more
wiley   +1 more source

Cation order control of correlations in double perovskite Sr_{2}VNbO_{6}

Physical Review Research, 2020
Double perovskites extend the design space for new materials and they often host phenomena that do not exist in their parent perovskite compounds. Here we present a detailed first-principles study of the correlated double perovskite Sr_{2}VNbO_{6}, where
Arpita Paul, Turan Birol
doaj   +1 more source

Ba2MgXO6 (X = S, Se), Chalcogenide‐Based Double Perovskite Materials for Green Optoelectronics and Thermoelectric Applications

Energy Technology
Chalcogenide‐based double perovskite materials have recently attracted attention of researchers because of their excellent properties and eco‐friendly nature. These compounds have proven to comprise better oxidation resistance, high‐temperature stability,
M. A. Ali, Abdullah Alodhayab, Saikh Mohammad, M. Faizan   +3 more
semanticscholar   +1 more source

Strong self-trapping by deformation potential limits photovoltaic performance in bismuth double perovskite

Science Advances, 2021
Bismuth double perovskite Cs2AgBiBr6 strong electron–acoustic phonon interactions derail its photovoltaic aspirations. Bismuth-based double perovskite Cs2AgBiBr6 is regarded as a potential candidate for low-toxicity, high-stability perovskite solar cells.
Bo Wu, Weihua Ning, Qiang Xu, Manukumara Manjappa, Minjun Feng, Senyun Ye, Jianhui Fu, Stener Lie, Tingting Yin, Feng Wang, Teck Wee Goh, P. C. Harikesh, Y. Tay, Ze-Xiang Shen, Fu-Qiang Huang, Ranjan Singh, Guo-Fu Zhou, Feng Gao, T. Sum   +18 more
semanticscholar   +1 more source

Hybrid Ferroelectric Tunnel Junctions with Intrinsic Nonlinearity and Self‐Rectification via Interfacial Reconstruction

Advanced Functional Materials, EarlyView.
Rapid thermal annealing reconstructs the BCFO/Nb:STO interface into an atomically thin reconstructed interfacial layer, which reshapes the tunneling barrier and converts a high‐TER ferroelectric tunnel junction into an intrinsically nonlinear, self‐rectifying device.
Hojin Lee, Joonbong Lee, Jinho Byun, Sang‐Hyeok Yang, A young Cho, Sangwoo Lee, Dae Haa Ryu, Hyunbin Chung, Hee Seo Yun, Moon Seop Choi, Yesul Choi, Sungkyun Park, Min‐Hyung Jung, Dongwon Lee, Yoon‐Uk Heo, Hu Young Jeong, Hongseok Kim, Shinhyeong Lee, Yunseok Kim, Young‐Min Kim, Jaekwang Lee, Taekjib Choi   +21 more
wiley   +1 more source

Lead-Free Halide Double Perovskites: A Review of the Structural, Optical, and Stability Properties as Well as Their Viability to Replace Lead Halide Perovskites

Metals, 2018
Perovskite solar cells employ lead halide perovskite materials as light absorbers. These perovskite materials have shown exceptional optoelectronic properties, making perovskite solar cells a fast-growing solar technology.
Edson Meyer, Dorcas Mutukwa, Nyengerai Zingwe, Raymond Taziwa   +3 more
doaj   +1 more source

Rationalization of Double Perovskite Oxides as Energy Materials: A Theoretical Insight from Electronic and Optical Properties

ACS Materials Au, 2022
The quest for clean energy conversion has become one of the most important efforts for tackling the greenhouse effect for a sustainable environment. This involves energy-scavenging processes like photovoltaics and catalysis, which have been manifested ...
Manasa G. Basavarajappa, Sudip Chakraborty   +1 more
semanticscholar   +1 more source

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

Machine-Learning Prediction of the Computed Band Gaps of Double Perovskite Materials [PDF]

, 2022
Conventional electronic structure methods based on density functional theory (DFT) suffer from not only high computational cost that scales cubically with the number of electrons, but also limited accuracy arising from the approximations of the exchange ...
Junfei, Zhang, Yueqi, Li, Xinbo, Zhou
core   +1 more source