Magnetic properties of Mg-doped AlN zigzag nanowires

Yeung Yu Hui, Jing Ye, Rolf Lortz, Kar Seng Teng, Shu Ping Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)

Abstract

Quasi-aligned hexagonal Mg-doped aluminum nitride zigzag nanowires (AlN:Mg ZNWs) were fabricated on sapphire substrates using chemical vapor deposition method. A saturated magnetic moment of ∼1 emu/cm 3 was found in the AlN:Mg ZNWs when a magnetic field was applied parallel to the sample. The AlN:Mg ZNWs exhibited magnetic anisotropy. The magnetic moment was about 50% larger and the coercivity was about 20% smaller when the field was applied parallel to the sample as compared to the applied field perpendicular to the sample. The Curie temperature of the AlN:Mg ZNWs was above 400 K. The origin of the ferromagnetism in the AlN:Mg ZNWs could be attributed to the formation of Mg-N complex which leads to magnetic coupling as revealed by X-ray photoelectron spectroscopy. KGaA, Weinheim.
Original languageEnglish
Pages (from-to)1988-1992
Number of pages5
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume209
Issue number10
DOIs
Publication statusPublished - 1 Oct 2012

Keywords

  • AlN
  • doping
  • magnetic properties
  • nanowires
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry
  • Electrical and Electronic Engineering

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