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
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Single-crystalline diluted magnetic semiconductor GaN:Mn nanowires
Heon Jin Choi,Han Kyu Seong,Han Kyu Seong,Joonyeon Chang,Kyeong Il Lee,Young Ju Park,Ju Jin Kim,Sang-Kwon Lee,Rongrui He,Tevye Kuykendall,Peidong Yang +10 more
TL;DR: Single-crystalline diluted magnetic semiconductor GaN:Mn nanowires with controlled Mn concentrations have been successfully synthesized and incorporated into devices.
Journal ArticleDOI
A coronene-based semiconducting two-dimensional metal-organic framework with ferromagnetic behavior
Renhao Dong,Zhitao Zhang,Diana Tranca,Shengqiang Zhou,Mingchao Wang,Peter Adler,Zhongquan Liao,Feng Liu,Yan Sun,Wujun Shi,Zhe Zhang,Ehrenfried Zschech,Stefan C. B. Mannsfeld,Claudia Felser,Xinliang Feng +14 more
TL;DR: The synthesis of a two-dimensional MOF is demonstrated by solvothermal methods using perthiolated coronene as a ligand and planar iron-bis(dithiolene) as linkages enabling a full π-d conjugation, illustrating that conjugated 2D MOFs have potential as ferromagnetic semiconductors for application in spintronics.
Journal ArticleDOI
Crystallographically oriented Co and Ni nanocrystals inside ZnO formed by ion implantation and postannealing
Shengqiang Zhou,Kay Potzger,J. von Borany,R. Grötzschel,Wolfgang Skorupa,Manfred Helm,Jürgen Fassbender +6 more
TL;DR: In this paper, the structural and magnetic properties of Co-and Ni-implanted ZnO single crystals were investigated and it was shown that Co or Ni nanocrystals (NCs) are the major contribution of the measured ferromagnetic properties.
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Doping concentration dependence of room-temperature ferromagnetism for Ni-doped ZnO thin films prepared by pulsed-laser deposition
TL;DR: In this article, Ni-doped ZnO thin films of single phase with preferred c-axis growth orientation were formed on Si (100) substrates by pulsed-laser deposition at room temperature.
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Sensitive SQUID magnetometry for studying nanomagnetism
TL;DR: In this article, a detailed discussion of possible artifacts and pitfalls characteristic for commercial superconducting quantum interference devices (SQUID magnetometers) is presented, which includes intrinsic artifacts which stem from the inherent design of the magnetometer as well as potential issues due to the user.
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.