Induced magnetic moment of Eu3+ ions in GaN

Vyacheslav V. Kachkanov, M. J. M.J. Wallace, Gerrit G. Van Der Laan, Sarnjeet S. S.S. Dhesi, Stuart A. S.A. Cavill, Yasufumi Y. Fujiwara, Kevin Peter K.P. O'Donnell

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Magnetic semiconductors with coupled magnetic and electronic properties are of high technological and fundamental importance. Rare-earth elements can be used to introduce magnetic moments associated with the uncompensated spin of 4f-electrons into the semiconductor hosts. The luminescence produced by rare-earth doped semiconductors also attracts considerable interest due to the possibility of electrical excitation of characteristic sharp emission lines from intra 4f-shell transitions. Recently, electroluminescence of Eu-doped GaN in current-injection mode was demonstrated in p-n junction diode structures grown by organometallic vapour phase epitaxy. Unlike most other trivalent rare-earth ions, Eu3+ ions possess no magnetic moment in the ground state. Here we report the detection of an induced magnetic moment of Eu3+ ions in GaN which is associated with the 7F2 final state of 5D0→7F2 optical transitions emitting at 622 nm. The prospect of controlling magnetic moments electrically or optically will lead to the development of novel magneto-optic devices.
LanguageEnglish
Article number969
Number of pages5
JournalScientific Reports
Volume2
Issue numberDecember
DOIs
Publication statusPublished - 12 Dec 2012

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magnetic moments
rare earth elements
ions
junction diodes
magneto-optics
p-n junctions
optical transition
vapor phase epitaxy
electroluminescence
luminescence
injection
magnetic properties
ground state
electronics
excitation
electrons

Keywords

  • materials science
  • optical materials
  • applied physics

Cite this

Kachkanov, V. V., Wallace, M. J. M. J., Van Der Laan, G. G., Dhesi, S. S. S. S., Cavill, S. A. S. A., Fujiwara, Y. Y., & O'Donnell, K. P. K. P. (2012). Induced magnetic moment of Eu3+ ions in GaN. Scientific Reports, 2(December), [969]. https://doi.org/10.1038/srep00969
Kachkanov, Vyacheslav V. ; Wallace, M. J. M.J. ; Van Der Laan, Gerrit G. ; Dhesi, Sarnjeet S. S.S. ; Cavill, Stuart A. S.A. ; Fujiwara, Yasufumi Y. ; O'Donnell, Kevin Peter K.P. / Induced magnetic moment of Eu3+ ions in GaN. In: Scientific Reports. 2012 ; Vol. 2, No. December.
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Kachkanov, VV, Wallace, MJMJ, Van Der Laan, GG, Dhesi, SSSS, Cavill, SASA, Fujiwara, YY & O'Donnell, KPKP 2012, 'Induced magnetic moment of Eu3+ ions in GaN' Scientific Reports, vol. 2, no. December, 969. https://doi.org/10.1038/srep00969

Induced magnetic moment of Eu3+ ions in GaN. / Kachkanov, Vyacheslav V.; Wallace, M. J. M.J.; Van Der Laan, Gerrit G.; Dhesi, Sarnjeet S. S.S.; Cavill, Stuart A. S.A.; Fujiwara, Yasufumi Y.; O'Donnell, Kevin Peter K.P.

In: Scientific Reports, Vol. 2, No. December, 969, 12.12.2012.

Research output: Contribution to journalArticle

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Kachkanov VV, Wallace MJMJ, Van Der Laan GG, Dhesi SSSS, Cavill SASA, Fujiwara YY et al. Induced magnetic moment of Eu3+ ions in GaN. Scientific Reports. 2012 Dec 12;2(December). 969. https://doi.org/10.1038/srep00969