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Showing 1 to 20 of 22 for “"Mn)As"”.
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Molekularstrahlepitaxie und Charakterisierung von (Ga,Mn)As Halbleiterschichten
… Elektronik wird bereits der III-V Halbleiter GaAs eingesetzt und ferromagnetisches (Ga,Mn)As könnte in die vorhandenen optischen und elektronischen Bauteile integriert werden. Deshalb ist eine intensive Erforschung der kristallinen Qualität, der elektrischen und magnetischen Eigenschaften von …
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Exploration of the CU-MN-AS ternary phase diagram and MN3B4 antiferromagnets
CuMnAs was first studied more than fifty years ago, both in a tetragonal phase (t-CuMnAs) and orthorhombic phase (o-CuMnAs). Today, the prospect of spintronics has created a new focus on antiferromagnetic materials with Néel temperatures above room temperature, with the goal of reading and writing …
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Electrical gating effects on the magnetic properties of (Ga,Mn)As diluted magnetic semiconductors
… of carrier-mediated ferromagnetic Ga1−xMnxAs diluted magnetic semiconductors. (Ga,Mn)As can be regarded as a prototype material because of its strong spin-orbit coupling and its crystalline properties which can be described within a simple band structure model. Compressively strained …
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Supplemental Trace Minerals (Zn, Cu, and Mn) as Sulfates or Hydroxy Trace Mineral Sources for Beef Heifers
… blocks 2 and 3). Heifers were stratified based on initial BW, age, health, prior research projects, and sire, and then assigned to 6 groups of 12 heifers, that were assigned randomly to 1 of 2 trace mineral treatments. The 2 treatments were trace mineral supplementation (Cu [74 mg/d], Mn …
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Current-induced torque driven ferromagnetic resonance in magnetic microstructures
… system. Diluted magnetic semiconductors (Ga,Mn)As and (Ga,Mn)(As,P) have been studied. Due to their strong spin-orbit coupling and well-understood band-structure, these materials are well-suited to this investigation. The combined effect of spinorbit coupling and exchange interaction permits …
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Magnetotransport effects in lateral and vertical ferromagnetic semiconductor junctions
… magnetoresistance (TAMR)effects in (Ga,Mn) based ferromagnetic semiconductor junctions. Detailed results are published in the following articles: [1] C. Rüster, T. Borzenko, C. Gould, G. Schmidt, L.W. Molenkamp, X. Liu, T.J.Wojtowicz, J.K. Furdyna, Z.G. Yu and M. Flatt´e, Very Large …
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Factors Affecting Manganese Homeostasis in the Chick
Plant and animal sources of manganese (Mn) are, for the most part, unavailable to the chick. Corn (C), soybean meal (SBM), fish meal (FM) and wheat bran (WB) reduced tissue Mn concentrations when added to a purified phytate- and fiber-free diet. Although these feed ingredients contain significant …
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Manganese diffusion in gallium arsenide, aluminum gallium arsenide, and gallium arsenide-aluminum gallium arsenide heterostructures
While Zn, Be, C, and Mg have been commonly used as p-type dopants in GaAs, Mn has not due to reports for which the data has demonstrated non-uniform diffusion, low surface concentration and the degradation of GaAs surface associated with Mn diffusion. A Mn concentration of 2 $\times$ 10$\sp{18}$ …
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The chemistry of iron in hydrothermal plumes
… vent-field plumes at 9°N on the East Pacific Rise and at 5°S on<br/>the Mid-Atlantic Ridge. The samples from the East Pacific Rise were analysed for Fe and<br/>dissolved and particulate organic carbon. Although hydrothermal systems are presumed to<br/>be inorganically dominated, …
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Magnetic ordering and spin wave dynamics in transition metal arsenides
Ever since spin orbit torque based switching was proposed in antiferromagnets, there is a growing interest in using a metallic antiferromagnet as an active component of a spintronic device. Arsenic forms a large pool of magnetic metals in combination with transition metal atoms. In this report, we …
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Ab-initio calculations for dilute magnetic semiconductors
… in these systems. Our calculations are based on density functional theory, being ideally suited for a description of the material specific properties of the considered DMS. Moreover we use the KKR Green function method in connection with the coherent potential approximation (CPA), which …
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The Muslim News: Playing Muslims in the Media Pitch, Penalties and Sport Champions
… British newspapers frequently represent Muslims as a distinct and homogenous group, associating them with terrorist groups and framing them as a cultural threat. Orientalist representations have been observed, depicting Muslims as inherently problematic. Nevertheless, Muslims’ own …
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Electrical control of spin dynamics in spin-orbit coupled ferromagnets
… originating from the spin-Hall effect and a Rashba spin-orbit field have both been reported in these materials. These spin-orbit torques may allow commercialisation of magnetic random access memories with higher efficiency than previous technologies. However, the exact origin of the torques is …
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Co2MnSi Heusler alloy thin films
… how to control the composition spread that was obtained. Having achieved this, a larger sputtering flange was built up to grow the ternary Heusler alloy, Co2MnSi. Co2MnSi has been predicted to be a half-metallic ferromagnet, which means that there is an energy gap in the minority spin band at …
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Telechelic Polyetherimides with Functionalized End Groups for Enhancement of Mechanical Strength, Flame Retardancy, and Optical Properties
… (PEI) and improving the properties. As a high-performance thermoplastic resin, the first challenge in PEI application is its high processing temperature and viscosity. Therefore, two supramolecular strategies were applied to not only solve the problem of high processing temperature or …
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Gênese, química, mineralogia e micromorfologia de solos da Amazônia Ocidental
… da Amazônia foram submetidos a análises físicas, químicas e mineralógicas com o propósito de conhecer melhor aspectos de sua gênese, química e mineralogia. Amostras desses solos foram mantidas sob inundação por seis meses e alíquotas da solução, coletadas e analisadas, periodicamente, para o …
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Controle estatístico de processos na avaliação da qualidade da água na bacia do rio Doce após o rompimento da barragem do Fundão (Mariana, MG)
As atividades antrópicas causam a degradação da qualidade da água e, com isso, o comprometimento dos usos dos recursos hídricos. Para que os usos da água sejam preservados, o atendimento aos padrões de qualidade da água é essencial, de modo que para assegurá-lo, faz- se necessário o monitoramento e …
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Network intrusion prevention in the evolved packet core utilising software defined networks and network function virtualisation
Mobile Networks (MNs) are fundamental infrastructures in modern life. As traffic volumes rise and subscriber needs are expanding, MNOs need to adapt in order to keep up with the demand. This has led to MNOs virtualising the Core Network (CN) by utilising Software Defined Networking (SDN) and …
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Impact of soil acidity on groundnut productivity in Mpumalanga and KwaZulu - Natal Province
… lowveld region of Mpumalanga and the Northern coast of KwaZulu-Natal. These soils are highly susceptible to leaching, which leads to acid-soil infertility. The goal of the current study was to examine the fertility status of the soils where groundnuts are grown traditionally in Mpumalanga and …
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Bioprospecting of plants species with potential to uptake inorganic chemical species from gold mine tailings and acid mine drainage
In South Africa, mining of gold and coal has huge negative impacts on the environment. This is due to the exposure of sulphide-bearing minerals such as pyrite (FeS2) to oxygenated water during and after the extraction of ore deposits which results in the formation of acid mine drainage (AMD). Acid …
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