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
Seeking Room-Temperature Ferromagnetic Semiconductors
TL;DR: In this paper, Ferromagnetic semiconductors are used to preserve the logic state when the power is off, which can enable entirely new kinds of computers, such as supercomputers.
Journal ArticleDOI
X-ray magnetic circular dichroism-A versatile tool to study magnetism
TL;DR: An overview of different chemical complexes studied by X-ray magnetic circular dichroism (XMCD) is presented in this article, where the possibilities of this technique for the characterization of magnetically interesting systems are discussed.
Journal ArticleDOI
Symmetry-controlled colloidal nanocrystals: nonhydrolytic chemical synthesis and shape determining parameters.
TL;DR: The crystalline phase of nucleating seeds, surface energy, kinetic vs thermodynamic growth, and selective adhesion processes of capping ligands are found to be most crucial for the determination of the nanocrystal shape.
Journal ArticleDOI
Ferromagnetism in cobalt-implanted ZnO
David P. Norton,M. E. Overberg,Stephen J. Pearton,K. Pruessner,John D. Budai,Lynn A. Boatner,M. F. Chisholm,Ju-Wan Lee,Z. G. Khim,Yun Daniel Park,Robert G. Wilson +10 more
TL;DR: The magnetic and structural properties of cobalt-implanted ZnO single crystals are reported in this paper, where high-quality, (110)-oriented single-crystal Sn-doped ZnOs substrates were implanted at ∼350 °C with Co to yield transition metal concentrations of 3-5 at.
Journal ArticleDOI
Temperature-dependent magnetization in diluted magnetic semiconductors
TL;DR: In this article, the authors calculated magnetization in magnetically doped semiconductors assuming a local exchange model of carrier-mediated ferromagnetic mechanism and using a number of complementary theoretical approaches.
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.