Some continuous geometry transitions and the consequences for a transition-metal atom

2007 ◽  
Vol 107 (5) ◽  
pp. 1073-1084
Author(s):  
Michael Springborg ◽  
Kaspar Hegetschweiler
Keyword(s):  
Transition Metal ◽  
Metal Atom ◽  
Transition Metal Atom ◽  
Continuous Geometry

Electronic properties of quasi two-dimensional transition metals chalcogenides with low-dimensional magnetism

Doklady BGUIR ◽  
2020 ◽  
Vol 18 (7) ◽  
pp. 87-95
Author(s):  
M. S. Baranava ◽  
P. A. Praskurava
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Exchange Interaction ◽  
Electronic Properties ◽  
Metal Atom ◽  
Transition Metal Atom ◽  
Two Dimensional ◽  
Transition Metal Atoms ◽  
Ground Magnetic ◽  
Low Dimensional

The search for fundamental physical laws which lead to stable high-temperature ferromagnetism is an urgent task. In addition to the already synthesized two-dimensional materials, there remains a wide list of possible structures, the stability of which is predicted theoretically. The article suggests the results of studying the electronic properties of MAX3 (M = Cr, Fe, A = Ge, Si, X = S, Se, Te) transition metals based compounds with nanostructured magnetism. The research was carried out using quantum mechanical simulation in specialized VASP software and calculations within the Heisenberg model. The ground magnetic states of twodimensional MAX3 and the corresponding energy band structures are determined. We found that among the systems under study, CrGeTe3 is a semiconductor nanosized ferromagnet. In addition, one is a semiconductor with a bandgap of 0.35 eV. Other materials are antiferromagnetic. The magnetic moment in MAX3 is localized on the transition metal atoms: in particular, the main one on the d-orbital of the transition metal atom (and only a small part on the p-orbital of the chalcogen). For CrGeTe3, the exchange interaction integral is calculated. The mechanisms of the formation of magnetic order was established. According to the obtained exchange interaction integrals, a strong ferromagnetic order is formed in the semiconductor plane. The distribution of the projection density of electronic states indicates hybridization between the d-orbital of the transition metal atom and the p-orbital of the chalcogen. The study revealed that the exchange interaction by the mechanism of superexchange is more probabilistic.

The spin-dependent transport of transition metal encapsulated B40fullerene

RSC Advances ◽  
2016 ◽  
Vol 6 (46) ◽  
pp. 40155-40161 ◽  
Author(s):  
Wei Wang ◽  
Yan-Dong Guo ◽  
Xiao-Hong Yan
Keyword(s):  
Transition Metal ◽  
Metal Atom ◽  
Transition Metal Atom ◽  
Spin Dependent Transport ◽  
Dependent Transport

Two-probe systems of transition metal atom (X)-encapsulated B40fullerene contacted with Au electrodes, where X = Fe, Mn, Ni, and Co.

ChemInform Abstract: Synthesis and Structure of H2NSO2NWCl4 - a Kirsanov Reagent with a Transition Metal Atom.

ChemInform ◽  
1987 ◽  
Vol 18 (31) ◽  
Author(s):  
M. WITT ◽  
H. W. ROESKY ◽  
M. NOLTEMEYER ◽  
G. M. SHELDRICK
Keyword(s):  
Transition Metal ◽  
Metal Atom ◽  
Transition Metal Atom

Electron counting in cationic and anionic silver clusters doped with a 3d transition-metal atom: endo- vs. exohedral geometry

2021 ◽  
Author(s):  
Kento Minamikawa ◽  
Shun Sarugaku ◽  
Masashi Arakawa ◽  
Akira Terasaki
Keyword(s):  
Transition Metal ◽  
Metal Atom ◽  
Transition Metal Atom ◽  
Silver Clusters ◽  
Electron Counting

Electron counting is a concept that often governs properties of molecules, clusters, and complexes. Here we explore silver clusters doped with a transition-metal atom, where it has been an issue...

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