Magnetic properties of MnSb granular films

M. Mizuguchi, H. Akinaga, K. Ono, M. Oshima

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Magnetoresistance (MR) effects were investigated on MnSb granular films. These films were composed of GaAs substrates, deposited MnSb dots, and Sb capping layers. With increasing nominal thickness of MnSb, a sudden increase in the magnetic circular dichroism intensity was observed over 0.7 nm. The extra-huge positive MR effect more than 10,000% was observed for the sample with the nominal thickness of 0.2nm at room temperature. I-V curve analysis showed the jump from the high-resistance state to the low-resistance state at the critical voltage. It is considered that the coalescence among dots which occurs at a certain nominal thickness plays an important role in the extra-huge MR effect.

Original languageEnglish
Pages (from-to)1838-1839
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume226-230
Issue numberPART II
DOIs
Publication statusPublished - 2001
Externally publishedYes

Keywords

  • Granular systems
  • MBE
  • Magneto-optical effects
  • Magnetoresistance - Thin films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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