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

doi:10.1103/PhysRevB.69.212407

Impurity-induced ferromagnetism and impurity states in Nd _1/2(Mn_0.95M_0.05)O₃

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

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Impurity effects on the lattice structure and the electronic state are investigated for B-site substituted half-doped manganites Nd _1/2Ca_1/2(Mn_0.95M_0.05)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 E_F. 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 language	English
Article number	212407
Pages (from-to)	212407-1-212407-4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	69
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.69.212407
Publication status	Published - 2004 Jun 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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

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.",

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T1 - Impurity-induced ferromagnetism and impurity states in Nd 1/2(Mn0.95M0.05)O3

AU - Moritomo, Y.

AU - Murakami, K.

AU - Ishikawa, H.

AU - Hanawa, M.

AU - Nakamura, A.

AU - Ohoyama, K.

PY - 2004/6/1

Y1 - 2004/6/1

N2 - 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.

AB - 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.

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Impurity-induced ferromagnetism and impurity states in Nd _1/2(Mn_0.95M_0.05)O₃

Abstract

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