Dopants in Semiconductors Studied by Perturbed Angular Correlation

Bartels, J.; Lorenz, K.; Ruske, F.; Tessema, Genene; Vianden, R.

doi:10.12693/aphyspola.100.585

Acta Phys. Pol. A

2001

DOI: 10.12693/aphyspola.100.585

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Dopants in Semiconductors Studied by Perturbed Angular Correlation

J. Bartels

K. Lorenz

F. Ruske

et al.

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2016

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“…. The principal axis of the EFG in GaN (and AlN) is known to be parallel to the c-axis of the sample[31]. As is evident inFig 2,the line at lower resonance velocity (higher isomer shift) shows reduced intensity in the θ = 0 o spectrum (±1/2→±1/2 transition), implying a negative value of ∆E Q .…”

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confidence: 82%

Lattice sites, charge states and spin–lattice relaxation of Fe ions in 57 Mn + implanted GaN and AlN

Masenda

Naidoo

Bharuth-Ram

et al. 2016

Journal of Magnetism and Magnetic Materials

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The lattice sites, valence states, resulting magnetic behaviour and spin-lattice relaxation of Fe ions in GaN and AlN were investigated by emission Mössbauer spectroscopy following the implantation of radioactive 57 Mn + ions at ISOLDE/CERN. Angle dependent measurements performed at room temperature on the 14.4 keV γ-rays from the 57 Fe Mössbauer state (populated from the 57 Mn β − decay) reveal that the majority of the Fe ions are in the 2+ valence state nearly substituting the Ga and Al cations, and/or associated with vacancy type defects. Emission Mössbauer spectroscopy experiments conducted over a temperature range of 100-800 K show the presence of magnetically-split sextets in the "wings" of the spectra for both materials. The temperature dependence of the sextets relate these spectral features to paramagnetic Fe 3+ with rather slow spin-lattice relaxation rates which

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mentioning

confidence: 82%

Lattice sites, charge states and spin–lattice relaxation of Fe ions in 57 Mn + implanted GaN and AlN

Masenda

Naidoo

Bharuth-Ram

et al. 2016

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

show abstract

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Dopants in Semiconductors Studied by Perturbed Angular Correlation

Cited by 1 publication

References 32 publications

Lattice sites, charge states and spin–lattice relaxation of Fe ions in 57 Mn + implanted GaN and AlN

Lattice sites, charge states and spin–lattice relaxation of Fe ions in 57 Mn + implanted GaN and AlN

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