Effects of Cu-doping on the magnetic state of Zn 09-xFe 01Cu xO

Kh A. Ziq*, A. Ismail, A. F. Salem, Shakeel Ahmed, A. Ghannam

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Magnetization measurements were performed on a series of Zn 0.9-xFe 0.1Cu xO samples (0< x∼0.1) prepared using solid state reaction and sol-gel methods. Although Cu is nonmagnetic, we found that increasing Cu content increases the saturation magnetization and enhances the hysteresis losses. Curie behavior of the susceptibility at high temperature indicates the presence of ferromagnetic exchange interaction. Moreover, we found that the exchange interaction and the molecular field coefficient are both ferromagnetic and greatly enhanced with Cu-doping; however, the Arrott-Belov-Kouvel plot did not reveal the presence of spontaneous magnetization down to 4.2 K.

Original languageEnglish
Pages (from-to)2579-2582
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume11
Issue number3
DOIs
StatePublished - Mar 2011

Keywords

  • Curie behavior
  • Exchange interaction
  • Ferromagnetic
  • Hysteresis loop
  • Magnetic semiconductors

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics

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