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
Extrinsic origin of ferromagnetism in doped ZnO
TL;DR: In this article, the effect of the grain size on the magnetic properties of nano-materials using a sol-gel route has been investigated and different possibilities are discussed, but no ferromagnetism has been observed for these samples.
Journal ArticleDOI
Structural, optical and magnetic properties of Fe-doped CeO2 samples probed using X-ray photoelectron spectroscopy
Swati Soni,V. S. Vats,Sudhish Kumar,B. Dalela,Monu Mishra,R. S. Meena,Govind Gupta,P. A. Alvi,Saurabh Dalela +8 more
TL;DR: In this paper, the effect of Fe-doping on the structural, optical, magnetic and electronic properties of polycrystalline CeO2 (for 5 and 10% doping concentration of Fecation) samples synthesized by low-temperature solid-state reaction method was reported.
Journal ArticleDOI
Crystallographically oriented magnetic ZnFe 2 O 4 nanoparticles synthesized by Fe implantation into ZnO
Shengqiang Zhou,Kay Potzger,Helfried Reuther,G. Talut,F. Eichhorn,J. von Borany,Wolfgang Skorupa,Manfred Helm,Jürgen Fassbender +8 more
TL;DR: In this paper, a correlation between structural and magnetic properties of Fe-implanted ZnO is presented, showing that high fluence Fe+ implantation into ZnOs leads to the formation of superparamagnetic α-Fe nanoparticles.
Journal ArticleDOI
Structural, optical and magnetic properties of Zn1−xCoxO prepared by the sol–gel route
Gunjan Srinet,Prateek Varshney,Ravindra Kumar,Vivek Sajal,Pawan K. Kulriya,Marcelo Knobel,Surender K. Sharma +6 more
TL;DR: In this article, the effects of Co doping on structural, optical and magnetic properties of ZnO samples prepared by the sol-gel method are reported, and the results show that the substitution of Co ions on Zn sites without changing the wurtzite structure is not sufficient to explain the room temperature ferromagnetic behavior.
Journal ArticleDOI
First-principles study of spin-polarized electronic band structures in ferromagnetic Zn1−xTMxS (TM = Fe, Co and Ni)
TL;DR: In this article, structural, electronic and magnetic properties of Zn 1− x TM x S (TM = Fe, Co and Ni) at x ǫ = 0.25 were investigated.
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.