scholarly journals Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Hui Han ◽  
Lei Zhang ◽  
Xiangde Zhu ◽  
Haifeng Du ◽  
Min Ge ◽  
...  
Keyword(s):  
Magnetic Coupling ◽  
Two Dimensional ◽  
Dimensional Characteristic

scholarly journals Data-driven studies of magnetic two-dimensional materials

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Trevor David Rhone ◽  
Wei Chen ◽  
Shaan Desai ◽  
Steven B. Torrisi ◽  
Daniel T. Larson ◽  
...  
Keyword(s):  
Machine Learning ◽  
Dft Calculations ◽  
Density Functional ◽  
Magnetic Coupling ◽  
Magnetic Ordering ◽  
Magnetic Behavior ◽  
Data Driven ◽  
Two Dimensional ◽  
Computationally Efficient ◽  
Data Driven Approach

Abstract We use a data-driven approach to study the magnetic and thermodynamic properties of van der Waals (vdW) layered materials. We investigate monolayers of the form $$\hbox {A}_2\hbox {B}_2\hbox {X}_6$$ A 2 B 2 X 6 , based on the known material $$\hbox {Cr}_2\hbox {Ge}_2\hbox {Te}_6$$ Cr 2 Ge 2 Te 6 , using density functional theory (DFT) calculations and machine learning methods to determine their magnetic properties, such as magnetic order and magnetic moment. We also examine formation energies and use them as a proxy for chemical stability. We show that machine learning tools, combined with DFT calculations, can provide a computationally efficient means to predict properties of such two-dimensional (2D) magnetic materials. Our data analytics approach provides insights into the microscopic origins of magnetic ordering in these systems. For instance, we find that the X site strongly affects the magnetic coupling between neighboring A sites, which drives the magnetic ordering. Our approach opens new ways for rapid discovery of chemically stable vdW materials that exhibit magnetic behavior.

An Overbooking Model for Air Cargo Industry under Stochastic Booking Request and Show-Up Rate

2015 ◽  
Vol 799-800 ◽  
pp. 1393-1397 ◽  
Author(s):  
Anupong Wannakrairot ◽  
Naragain Phumchusri
Keyword(s):  
Sensitivity Analysis ◽  
Random Variables ◽  
Two Dimensional ◽  
Air Cargo ◽  
Total Cost ◽  
Dimensional Characteristic ◽  
The Impact

Overbooking is a technique which sells goods or services in excess of the available capacity because there is a possibility that some customers might not show up. In air cargo overbooking problem, overbooking model is more complex because of the two-dimensional characteristic. This paper presents a two-dimensional air cargo overbooking model to find the optimal overbooking level in order to minimize the total cost, which consists of spoilage and offloading costs. Booking requests and show-up rate are random variables with known distributions. Sensitivity analysis is used to observe the impact of the ratio between spoilage and offloading costs on the optimal overbooking level.

scholarly journals Capping-layer-induced magnetic coupling in a two-dimensional nanostructured system

2004 ◽  
Vol 84 (12) ◽  
pp. 2139-2141 ◽  
Author(s):  
E. Navarro ◽  
Y. Huttel ◽  
C. Clavero ◽  
G. Armelles ◽  
A. Cebollada
Keyword(s):  
Magnetic Coupling ◽  
Two Dimensional ◽  
Capping Layer

Proposed mechanical method for switching the spin transport channel in two-dimensional magnetic metal–magnetic semiconductor van der Waals contacts

2020 ◽  
Vol 5 (11) ◽  
pp. 1496-1499
Author(s):  
Pengfei Gao ◽  
Xingxing Li ◽  
Jinlong Yang
Keyword(s):  
Spin Transport ◽  
Van Der Waals ◽  
Magnetic Semiconductor ◽  
Magnetic Coupling ◽  
Two Dimensional ◽  
Mechanical Method ◽  
Transport Channel ◽  
Magnetic Metal ◽  
Semiconductor Contacts ◽  
Van Der Waals Contacts

Controlling the spin transport across two-dimensional magnetic metal–magnetic semiconductor contacts via mechanically regulating the interfacial magnetic coupling.

Photoreversible Switching of Magnetic Coupling in a Two-dimensional Copper Octacyanomolybdate

2009 ◽  
Vol 38 (4) ◽  
pp. 338-339 ◽  
Author(s):  
Hiroko Tokoro ◽  
Kosuke Nakagawa ◽  
Koji Nakabayashi ◽  
Toshinori Kashiwagi ◽  
Kazuhito Hashimoto ◽  
...  
Keyword(s):  
Magnetic Coupling ◽  
Two Dimensional

scholarly journals Tailoring the magnetic ordering of the Cr4O5/Fe(001) surface via a controlled adsorption of C60 organic molecules.

2020 ◽  
Author(s):  
Federico Orlando ◽  
Guido Fratesi ◽  
Giovanni Onida ◽  
Simona Achilli
Keyword(s):  
Density Functional ◽  
Organic Molecules ◽  
Molecular Layer ◽  
Magnetic Coupling ◽  
Magnetic Ordering ◽  
Magnetic Interaction ◽  
High Symmetry ◽  
Two Dimensional ◽  
Adsorption Sites ◽  
Controlled Adsorption

We analyse the spinterface formed by a C60 molecular layer on a Fe(001) surface covered by a two-dimensional Cr4O5 layer. We consider different geometries, by combining the high symmetry adsorption sites of the surface with three possible orientations of the molecules in a fully relaxed Density Functional Theory calculation.We show that the local hybridization between the electronic states of the Cr4O5 layer and those of the organic molecules is able to modify the magnetic coupling of the Cr atoms. Both the intra-layer and the inter-layer magnetic interaction is indeed driven by O atoms of the two-dimensional oxide. We demonstrate that the C60 adsorption on the energetically most stable site turns the ferromagnetic intra-layer coupling into an antiferromagnetic one, and that antiferromagnetic to ferromagnetic switching and spin patterning of the substrate are made possible by adsorption on other sites.

Controlling interlayer magnetic coupling in the two-dimensional magnet Fe3GeTe2

2022 ◽  
Vol 105 (1) ◽  
Author(s):  
In Kee Park ◽  
Cheng Gong ◽  
Kyoo Kim ◽  
Geunsik Lee
Keyword(s):  
Magnetic Coupling ◽  
Two Dimensional ◽  
Interlayer Magnetic Coupling

Ferromagnetic Intermolecular Interaction and Crystal Structure of α-Nitronyl Nitroxide

1989 ◽  
Vol 173 ◽  
Author(s):  
Kunio Awaga ◽  
Tamotsu Inabe ◽  
Yusei Maruyama
Keyword(s):  
Crystal Structure ◽  
Temperature Dependence ◽  
Intermolecular Interaction ◽  
Magnetic Coupling ◽  
Two Dimensional ◽  
Nitronyl Nitroxide ◽  
Magnetic Susceptibilities ◽  
X Ray ◽  
Nitronyl Nitroxides ◽  
Coulomb Attraction

ABSTRACTThe temperature dependence of the magnetic susceptibilities for several ±-nitronyl nitroxides have been measured. It is found that the intermolecular magnetic coupling in these radical crystals changes from antiferromagnetic to ferromagnetic depending on the substituents at ±-position. X-Ray crystal analysis and MO calculation have been carried out on the ferromagnetic ±-nitronyl nitroxide, 2-(4-nitrophenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxy 3-oxide, revealing a two-dimensional ferromagnetic network linked by the Nδ+...0δ− Coulomb attraction.

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