Impurity-induced ferromagnetism and impurity states in Nd 1/2(Mn0.95M0.05)O3

Y. Moritomo, K. Murakami, H. Ishikawa, M. Hanawa, A. Nakamura, K. Ohoyama

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Abstract

Impurity effects on the lattice structure and the electronic state are investigated for B-site substituted half-doped manganites Nd 1/2Ca1/2(Mn0.95M0.05)O3 (M is the 3d and 4d transition metals). We investigated the interrelation between the impurity-induced ferromagnetism and (1) the lattice structure (chemical pressure effect), (2) the magnitude of the impurity spin, and (3) the density of state (DOS) of the impurity d state at the Fermi level EF. We found a strong correlation between the ferromagnetism and the DOS of the impurity state at EF, suggesting that the ferromagnetism can be ascribed to the enhanced one-electron bandwidth of the Mn 3d-M d hybridized band.

Original languageEnglish
Article number212407
Pages (from-to)212407-1-212407-4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number21
DOIs
Publication statusPublished - 2004 Jun 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Moritomo, Y., Murakami, K., Ishikawa, H., Hanawa, M., Nakamura, A., & Ohoyama, K. (2004). Impurity-induced ferromagnetism and impurity states in Nd 1/2(Mn0.95M0.05)O3. Physical Review B - Condensed Matter and Materials Physics, 69(21), 212407-1-212407-4. [212407]. https://doi.org/10.1103/PhysRevB.69.212407