Journal ArticleDOI
Zener Model Description of Ferromagnetism in Zinc-Blende Magnetic Semiconductors
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TLDR
Zener's model of ferromagnetism, originally proposed for transition metals in 1950, can explain T(C) of Ga(1-)(x)Mn(x)As and that of its II-VI counterpart Zn(1)-Mn (x)Te and is used to predict materials with T (C) exceeding room temperature, an important step toward semiconductor electronics that use both charge and spin.Abstract:
Ferromagnetism in manganese compound semiconductors not only opens prospects for tailoring magnetic and spin-related phenomena in semiconductors with a precision specific to III-V compounds but also addresses a question about the origin of the magnetic interactions that lead to a Curie temperature (T(C)) as high as 110 K for a manganese concentration of just 5%. Zener's model of ferromagnetism, originally proposed for transition metals in 1950, can explain T(C) of Ga(1-)(x)Mn(x)As and that of its II-VI counterpart Zn(1-)(x)Mn(x)Te and is used to predict materials with T(C) exceeding room temperature, an important step toward semiconductor electronics that use both charge and spin.read more
Citations
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Journal ArticleDOI
Photoluminescence of Cd1-xMnxS (x ≤ 0.3) nanowires
Chan Woong Na,Doo Suk Han,Dae Sung Kim,Young Joo Kang,Jinyoung Lee,Jeunghee Park,Dong Keun Oh,Kil Suk Kim,Dongho Kim +8 more
TL;DR: The X-ray diffraction pattern reveals the contraction of the lattice constants due to the incorporation of Mn in the Cd1-xMnxS nanowires, suggesting the energy transfer from the band electrons to the Mn2+ ions.
Journal ArticleDOI
Structural, optical and magnetic properties of Fe-doped ZnO
Wenjuan Cheng,Xueming Ma +1 more
TL;DR: Zn1-xFexO (x = 0.10, 0.20) thin films have been grown on Al2O3 (0001) substrates by magnetron co-sputtering technique as discussed by the authors.
Journal ArticleDOI
Use of ion implantation to facilitate the discovery and characterization of ferromagnetic semiconductors
Nikoleta Theodoropoulou,Arthur F. Hebard,S. N. G. Chu,M. E. Overberg,C. R. Abernathy,Stephen J. Pearton,Robert G. Wilson,J. M. Zavada +7 more
TL;DR: In this article, the magnetic ions, Mn, Fe, and Ni, were implanted into each of the epitaxially grown semiconductors GaN, GaP, and SiC to achieve volume concentrations between 1 and 5 at.
Journal ArticleDOI
Quantum size effect and tunneling magnetoresistance in ferromagnetic-semiconductor quantum heterostructures
TL;DR: In this article, the authors report on the resonant tunneling effect and the increase of tunneling magnetoresistance induced by it in ferromagnetic-semiconductor quantum-well (QW) heterostructures.
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Photoluminescence studies on structural defects and room temperature ferromagnetism in Ni and Ni–H doped ZnO nanoparticles
TL;DR: In this paper, the effects of hydrogenated annealing on the crystal structure, room temperature ferromagnetism (RT-FM) and photoluminescence (PL) properties of Ni-doped ZnO (Zn1−xNixO, x=0.0 to 0.2) nanoparticles were explored.
References
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Journal ArticleDOI
Making Nonmagnetic Semiconductors Ferromagnetic
TL;DR: The magnetic coupling in all semiconductor ferromagnetic/nonmagnetic layered structures, together with the possibility of spin filtering in RTDs, shows the potential of the present material system for exploring new physics and for developing new functionality toward future electronics.
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Diluted magnetic semiconductors
TL;DR: In this paper, the physical properties of diluted magnetic semiconductors (DMS) of the type AII1−xMnxBVI (e.g., Cd1−mnxSe, Hg 1−mnsTe) were reviewed.
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(Ga,Mn)As: A new diluted magnetic semiconductor based on GaAs
Hideo Ohno,Aidong Shen,Fumihiro Matsukura,Akira Oiwa,Akira Endo,Shingo Katsumoto,Yasuhiro Iye +6 more
TL;DR: In this article, a new GaAs-based diluted magnetic semiconductor, (Ga,Mn)As, was prepared by molecular beam epitaxy and the lattice constant was determined by x-ray diffraction and shown to increase with the increase of Mn composition, x.
Journal ArticleDOI
Interaction Between the d Shells in the Transition Metals
TL;DR: In this paper, it is shown that the spin coupling between the incomplete $d$ shells and the conduction electrons leads to a tendency for a ferromagnetic alignment of $d $ spins.