Ferromagnetic semiconductor material based on mechanochemical mixture of polyaniline polystyrene and Fe nanoparticles

2007 ◽  
Vol 101 (9) ◽  
pp. 09N504 ◽  
Author(s):  
R. R. Rakhimov ◽  
R. Bah ◽  
J. S. Hwang ◽  
S. P. Solodovnikov ◽  
I. A. Alexandrov ◽  
...  
Keyword(s):  
Ferromagnetic Semiconductor ◽  
Semiconductor Material ◽  
Fe Nanoparticles

Spatiotemporal Control of Amide Radicals During Photocatalysis

2020 ◽  
Author(s):  
Shogo Mori ◽  
Takahiro Aoki ◽  
Kaliyamoorthy Selvam ◽  
Shunichi Fukuzumi ◽  
Jieun Jung ◽  
...  
Keyword(s):  
Organic Synthesis ◽  
Nickel Complex ◽  
Nickel Complexes ◽  
Semiconductor Material ◽  
Radical Reactions ◽  
Substitution Reactions ◽  
Carbon Neutrality ◽  
Spatiotemporal Control ◽  
Scalable Production ◽  
Salt Waste

Despite the continuing popularity of radical reactions in organic synthesis, much remains to be explored in this area. Herein, we describe how spatiotemporal control can be exerted over the formation and reactivity of divergent exchangeable formamide radicals using nickel complexes with a semiconductor material (TiO<sub>2</sub>) under irradiation from near-UV–Vis light. Depending on the bipyridine ligand used and the quantity of the nickel complex that is hybridized on or nonhydridized over the TiO<sub>2</sub> surface, these radicals selectively undergo substitution reactions at the carbon center of carbon–bromine bonds that proceed via three different pathways. As the scalable production of formamides from CO<sub>2</sub> does not produce salt waste, these methods could add a new dimension to the search for carbon neutrality through the indirect incorporation of CO<sub>2</sub> into organic frameworks.

Transport and magnetic properties of co-doped ferromagnetic semiconductor (In,Fe,Mn)As

2020 ◽  
Vol 13 (8) ◽  
pp. 083005
Author(s):  
Le Duc Anh ◽  
Taiki Hayakawa ◽  
Kohei Okamoto ◽  
Nguyen Thanh Tu ◽  
Masaaki Tanaka
Keyword(s):  
Magnetic Properties ◽  
Ferromagnetic Semiconductor ◽  
Co Doped

Incoherent spin current

2017 ◽  
Author(s):  
K. Ando ◽  
E. Saitoh
Keyword(s):  
Diffusion Equation ◽  
Spin Density ◽  
Spin Diffusion ◽  
Spin Injection ◽  
Spin Current ◽  
Ferromagnetic Semiconductor ◽  
Electrochemical Potential ◽  
Semiconductor Interface ◽  
Interface Resistance ◽  
Inhomogeneous Spin

This chapter introduces the concept of incoherent spin current. A diffusive spin current can be driven by spatial inhomogeneous spin density. Such spin flow is formulated using the spin diffusion equation with spin-dependent electrochemical potential. The chapter also proposes a solution to the problem known as the conductivity mismatch problem of spin injection into a semiconductor. A way to overcome the problem is by using a ferromagnetic semiconductor as a spin source; another is to insert a spin-dependent interface resistance at a metal–semiconductor interface.

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