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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Carrier-mediated ferromagnetism in N codoped (Zn,Mn)O (101¯0) thin films
TL;DR: In this paper, first principles calculations based on density functional theory and generalized gradient approximation were used to show that the ground state of Mn doped ZnO $(10\overline{1}0)$ thin film changes from antiferromagnetic to ferromagnetic when codoped with N.
Journal ArticleDOI
Hydrothermal synthesis Ni-doped ZnO nanorods with room-temperature ferromagnetism
TL;DR: In this paper, a simple hydrothermal route was used to synthesize Zn1−−xNixO nanorods with nominal Ni doping concentrations of x = 0, 1, 5, and 10%.
Journal ArticleDOI
Gallium nitride bulk crystal growth processes : a review
TL;DR: In this paper, the main reviewed routes are: (i) the high pressure nitrogen solution growth (HP.N.G.), (ii) the Na flux method, and (iii) the ammonothermal crystal growth.
Journal ArticleDOI
Electronic structure of Zn1−xCoxO using photoemission and x-ray absorption spectroscopy
S. C. Wi,J.-S. Kang,J. H. Kim,S.-B. Cho,B. J. Kim,S. Yoon,B. J. Suh,S. W. Han,K. H. Kim,K. J. Kim,B. S. Kim,H. J. Song,H. J. Shin,J. H. Shim,B. I. Min +14 more
TL;DR: In this article, it was shown that the Co ions in Zn1−xCoxO are in the divalent Co2+(d7) states under the tetrahedral symmetry.
Journal Article
Carrier-mediated Ferromagnetism in N Co-doped (Zn, Mn)O (10 0) Thin Film
TL;DR: In this paper, first principles calculations based on density functional theory and generalized gradient approximation were used to show that the ground state of Mn doped ZnO $(10\\overline{1}0)$ thin film changes from antiferromagnetic to ferromagnetic when codoped with N.
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.