32 research outputs found
Resonant electron spin-flip Raman scattering in CdTe and the diluted magnetic semiconductor Cd
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On the atomic configuration of EL2
No full textThe atomic configuration of the EL2 defect in its stable state has been determined as an arsenic antisite defect associated with an arsenic interstitial at a next nearest neighbour site. The metastable EL2 state is tentatively assigned to an arsenic pair defect at a gallium lattice site (As-As ) Ga.La configuration atomique du défaut EL2 dans son état stable est attribuée à un complexe composé d'un antisite d'arsenique et d'un interstitiel d'arsenique en position de deuxième voisin. Les propriétés de l'état métastable peuvent être décrites dans un modèle d'une paire d'arsenique (As-As )Ga à un site gallium
Stoichiometry of the ternary semiconductor CuGaS:Fe as determined by Moessbauer spectroscopy
No full textElectron paramagnetic resonance study of Zn1–xCoxO: A predicted high-temperature ferromagnetic semiconductor.
No full textInternational audienceThe magnetic properties of Co2+ ions in epitaxial (Zn,Co)O layers with 10% Co concentration have been studied by electron paramagnetic resonance spectroscopy. The Co-related EPR spectrum is characterized by a 200-G broad anisotropic single line with g factors close to those of the isolated Co2+ ion. The temperature dependence of the EPR signal follows a Curie-Weiss law with a critical temperature of +12 K. We find no evidence for a high-temperature ferromagnetic state. Magnetocrystalline anisotropy is observed and a canted spin arrangement is suggested
