Reversible ferromagnetism in rutile TiO 2 single crystals induced by nickel impurities

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Y. L. Zhao
  • M. Motapothula
  • N. L. Yakovlev
  • Z. Q. Liu
  • S. Dhar
  • A. Rusydi
  • [Unknown] Ariando
  • M. B H Breese
  • T. Venkatesan

Detail(s)

Original languageEnglish
Article number142105
Journal / PublicationApplied Physics Letters
Volume101
Issue number14
Publication statusPublished - 1 Oct 2012
Externally publishedYes

Abstract

We report a Ni impurity induced reversible ferromagnetism and surface conduction in rutile TiO 2 crystals subjected to specific thermal annealing. For annealing in vacuum at 800 °C, a growing ferromagnetic signal is seen with time while for a similar annealing in air, the magnetism vanishes. The magnetism is concomitant with a surface conductivity which at low temperatures shows tunneling characteristics. Here, we show that Ni magnetic impurity (in TiO 2 crystals at

Citation Format(s)

Reversible ferromagnetism in rutile TiO 2 single crystals induced by nickel impurities. / Zhao, Y. L.; Motapothula, M.; Yakovlev, N. L.; Liu, Z. Q.; Dhar, S.; Rusydi, A.; Ariando, [Unknown]; Breese, M. B H; Wang, Q.; Venkatesan, T.

In: Applied Physics Letters, Vol. 101, No. 14, 142105, 01.10.2012.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review