Direct observation of the ferrimagnetic coupling of A-site Cu and B-site Fe spins in charge-disproportionated CaCu3Fe4O12

M. Mizumaki; W. T. Chen; T. Saito; I. Yamada; J. Paul Attfield; Y. Shimakawa

doi:10.1103/PhysRevB.84.094418

Direct observation of the ferrimagnetic coupling of A-site Cu and B-site Fe spins in charge-disproportionated CaCu₃Fe₄O₁₂

M. Mizumaki, W. T. Chen, T. Saito, I. Yamada, J. Paul Attfield, Y. Shimakawa

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

Abstract / Description of output

The magnetic coupling between Fe and Cu moments in the charge-disproportionated CaCu₃Fe₄O₁₂ is studied by neutron powder diffraction, x-ray absorption, and magnetic circular dichroism measurements. The magnetic moments of the B-site Fe are coupled antiferromagnetically with those of the A'-site Cu, and the Fe³⁺ and Fe⁵⁺ spins at the B site align ferromagnetically. The orbital contribution of the magnetic moment for Fe is significant and appears to stabilize the ferrimagnetic structure of charge-disproportionated CaCu₃Fe₄O₁₂.

Original language	English
Article number	094418
Pages (from-to)	-
Number of pages	4
Journal	Physical review B
Volume	84
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.84.094418
Publication status	Published - 15 Sept 2011

Keywords / Materials (for Non-textual outputs)

RAY CIRCULAR-DICHROISM
PEROVSKITE
MAGNETORESISTANCE

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10.1103/PhysRevB.84.094418

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http://prb.aps.org/abstract/PRB/v84/i9/e094418

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abstract = "The magnetic coupling between Fe and Cu moments in the charge-disproportionated CaCu3Fe4O12 is studied by neutron powder diffraction, x-ray absorption, and magnetic circular dichroism measurements. The magnetic moments of the B-site Fe are coupled antiferromagnetically with those of the A'-site Cu, and the Fe3+ and Fe5+ spins at the B site align ferromagnetically. The orbital contribution of the magnetic moment for Fe is significant and appears to stabilize the ferrimagnetic structure of charge-disproportionated CaCu3Fe4O12.",

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AU - Saito, T.

AU - Yamada, I.

AU - Attfield, J. Paul

AU - Shimakawa, Y.

PY - 2011/9/15

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KW - MAGNETORESISTANCE

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Direct observation of the ferrimagnetic coupling of A-site Cu and B-site Fe spins in charge-disproportionated CaCu₃Fe₄O₁₂

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Keywords / Materials (for Non-textual outputs)

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