Room temperature spintronic material - Mn-doped ZnO revisited

Parmanand Sharma, Amita Gupta, Frank J. Owens, Akhisha Inoue, K. V. Rao

Research output: Contribution to journalConference articlepeer-review

139 Citations (Scopus)

Abstract

We report the first observations of ferromagnetism above room temperature for small atomic percentages of Mn doped in ZnO. In a homogeneous bulk pellet sample sintered at low temperatures (∼500°C) Mn is found to carry an average moment of 0.16μB per Mn ion. We have obtained room temperature ferromagnetic ordering in samples containing around 2% Mn in the form of powder, bulk pellets and 2-3μm thick transparent laser-ablated films. The new capability to fabricate ferromagnetic Mn-doped ZnO semiconductors promises new devices related to spintronic devices as well as magneto-optic components.

Original languageEnglish
Pages (from-to)115-121
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Volume282
Issue number1-3
DOIs
Publication statusPublished - 2004 Nov
Externally publishedYes
EventInternational Symposium on Advanced Magnetic Technologies - Taipei, Taiwan, Province of China
Duration: 2003 Nov 132003 Nov 16

Keywords

  • Ferromagnetism
  • Mn-doped ZnO
  • Pulsed laser ablation
  • Spintronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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