Magnetic and structural properties of Gd-implanted zinc-blende GaN

F. Y. Lo, A. Melnikov, D. Reuter, A. D. Wieck, V. Ney, T. Kammermeier, A. Ney, J. Schörmann, S. Potthast, D. J. As, K. Lischka

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Zinc-blende GaN layers grown by molecular beam epitaxy were uniformly focused-ion-beam implanted with 300 keV Gd3+ ions for doses ranging from 1× 1012 to 1× 1015 cm-2, and their structural and magnetic properties were studied. The implanted samples were not subjected to any annealing treatment. Only Gd incorporation into zinc-blende GaN was observed by x-ray diffraction. Magnetic investigations using superconducting quantum interference device magnetometry reveal a (super)paramagneticlike behavior with an ordering temperature around 60 K for the sample with the highest implantation dose. Our experimental studies indicate that the spontaneous electric polarization in wurtzite GaN is the crucial mechanism for its ferromagneticlike behavior upon Gd doping.

Original languageEnglish
Article number262505
JournalApplied Physics Letters
Volume90
Issue number26
DOIs
Publication statusPublished - 2007 Aug 2

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Magnetic and structural properties of Gd-implanted zinc-blende GaN'. Together they form a unique fingerprint.

  • Cite this

    Lo, F. Y., Melnikov, A., Reuter, D., Wieck, A. D., Ney, V., Kammermeier, T., Ney, A., Schörmann, J., Potthast, S., As, D. J., & Lischka, K. (2007). Magnetic and structural properties of Gd-implanted zinc-blende GaN. Applied Physics Letters, 90(26), [262505]. https://doi.org/10.1063/1.2753113