6814 Suchergebnisse für: „“
Ferromagnetic behavior in Zn(Mn, P)O thin films
We present magnetic properties of Zn(Mn, P)O thin films, with 5 at% Mn, epitaxially grown by pulsed laser deposition in oxygen atmosphere on a-plane sapphire substrates. Ferromagnetism above room temperature...
PublikationenMagnetic characterization of Bi(Fe1-xMnx)O-3
Bi(Fe1−xMnx)O3 ceramics (x up to 0.3) were prepared by rapid sintering. Weak ferromagnetism with two magnetic anomalies at low temperatures was observed for Bi(Fe0.95Mn0.05)O3 and Bi(Fe0.9Mn0.1)O3. From...
PublikationenSpin manipulation in Co-doped ZnO
We report the clearly observed tunneling magnetoresistance at 5 K in magnetic tunnel junctions with Co-doped ZnO as a bottom ferromagnetic electrode and Co as a top ferromagnetic electrode prepared by...
PublikationenOrigin of carrier localization on two-dimensional GaN substitution layers embedded in GaAs
The electronic properties of GaAs containing a two-dimensional GaN substitution layer are studied by means of the empirical pseudopotential method in a periodic modeling approach. These are found to be...
PublikationenBand-gap narrowing in Mn-doped GaAs probed by room-temperature photoluminescence
The electronic band structure of the (Ga,Mn)As system has been one of the most intriguing problems in solid state physics over the past two decades. Determination of the band structure evolution with increasing...
PublikationenChemical and structural effects of two-dimensional isovalent substitutions in A(III)-B(V) semiconductors
The empirical pseudopotential method is used to study the electronic properties of two-dimensional isovalent substitutions in A(III)-B(V) semiconductors in a periodic modelling approach. Namely, for InAs/GaAs,...
PublikationenThermally assisted tunneling processes in InxGa1-xAs/GaAs quantum-dot structures
An ensemble of self-assembled InxGa1−xAs quantum dots has been grown in n-conducting GaAs with a low dislocation density by molecular beam epitaxy using the so-called activated alloy phase separation...
PublikationenMagneto-optical coupling in ferromagnetic thin films investigated by vector-magneto-optical generalized ellipsometry
We performed generalized Mueller matrix ellipsometry measurements in a magnetic field of arbitrary orientation and magnitude up to 400 mT at room temperature and probed the magneto-optical response of...
PublikationenMnSi1.7 nanoparticles embedded in Si: Superparamagnetism with collective behavior
The doping of Mn in Si is attracting research attentions due to the possibility to fabricate Si-based diluted magnetic semiconductors. However, the low solubility of Mn in Si favors the precipitation of...
PublikationenApplication of pulsed laser annealing to ferromagnetic GaMnAs
In this experimental and theoretical work we focus on the technique of pulsed laser annealing applied to the metastable ferromagnetic semiconductor GaMnAs. Analytical heat-flow calculations are used to...
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