Magnetism and magnetoelectricity of a U-type hexaferrite Sr4 Co2 Fe36 O60

K. Okumura; T. Ishikura; M. Soda; T. Asaka; H. Nakamura; Y. Wakabayashi; T. Kimura

doi:10.1063/1.3593371

Magnetism and magnetoelectricity of a U-type hexaferrite Sr₄ Co₂ Fe₃₆ O₆₀

K. Okumura, T. Ishikura, M. Soda, T. Asaka, H. Nakamura, Y. Wakabayashi, T. Kimura

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

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Abstract

We report on structural, magnetic, and magnetoelectric (ME) properties of a U-type hexaferrite Sr₄ Co₂ Fe₃₆O₆₀ prepared by solid state reaction. Samples sintered at 1150-1180 °C in oxygen contain the fewest impurity phases and show highly insulating behavior. Powder neutron diffraction results reveal that a commensurate magnetic order with a (0,0,3/2) propagation vector develops below TN2 ∼350 K. Corresponding to the appearance of the magnetic order, the sample shows a small ME effect. These results suggest that Sr₄ Co₂ Fe₃₆ O ₆₀ is a room-temperature ME material in which the origin of the ME effect is similar to those of other ME hexaferrites.

Original language	English
Article number	212504
Journal	Applied Physics Letters
Volume	98
Issue number	21
DOIs	https://doi.org/10.1063/1.3593371
Publication status	Published - 2011 May 23
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Magnetism and magnetoelectricity of a U-type hexaferrite Sr4 Co2 Fe36 O60",

abstract = "We report on structural, magnetic, and magnetoelectric (ME) properties of a U-type hexaferrite Sr4 Co2 Fe36O60 prepared by solid state reaction. Samples sintered at 1150-1180 °C in oxygen contain the fewest impurity phases and show highly insulating behavior. Powder neutron diffraction results reveal that a commensurate magnetic order with a (0,0,3/2) propagation vector develops below TN2 ∼350 K. Corresponding to the appearance of the magnetic order, the sample shows a small ME effect. These results suggest that Sr4 Co2 Fe36 O 60 is a room-temperature ME material in which the origin of the ME effect is similar to those of other ME hexaferrites.",

author = "K. Okumura and T. Ishikura and M. Soda and T. Asaka and H. Nakamura and Y. Wakabayashi and T. Kimura",

note = "Funding Information: We thank T. Takeuchi, Y. Hiraoka, T. Honda, T. Usui, and Y. Yamaguchi for their help in experiments. Work at the JRR-3 was supported by ISSP of University of Tokyo. Work by TA was supported by a grant from Institute of Ceramics Research and Education, Nagoya Institute of Technology. This work was supported by KAKENHI (Grant Nos. 20674005, 20001004, 19052001, and 19052002) and the Global COE Program (G10).",

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AU - Okumura, K.

AU - Ishikura, T.

AU - Soda, M.

AU - Asaka, T.

AU - Nakamura, H.

AU - Wakabayashi, Y.

AU - Kimura, T.

N1 - Funding Information: We thank T. Takeuchi, Y. Hiraoka, T. Honda, T. Usui, and Y. Yamaguchi for their help in experiments. Work at the JRR-3 was supported by ISSP of University of Tokyo. Work by TA was supported by a grant from Institute of Ceramics Research and Education, Nagoya Institute of Technology. This work was supported by KAKENHI (Grant Nos. 20674005, 20001004, 19052001, and 19052002) and the Global COE Program (G10).

PY - 2011/5/23

Y1 - 2011/5/23

N2 - We report on structural, magnetic, and magnetoelectric (ME) properties of a U-type hexaferrite Sr4 Co2 Fe36O60 prepared by solid state reaction. Samples sintered at 1150-1180 °C in oxygen contain the fewest impurity phases and show highly insulating behavior. Powder neutron diffraction results reveal that a commensurate magnetic order with a (0,0,3/2) propagation vector develops below TN2 ∼350 K. Corresponding to the appearance of the magnetic order, the sample shows a small ME effect. These results suggest that Sr4 Co2 Fe36 O 60 is a room-temperature ME material in which the origin of the ME effect is similar to those of other ME hexaferrites.

AB - We report on structural, magnetic, and magnetoelectric (ME) properties of a U-type hexaferrite Sr4 Co2 Fe36O60 prepared by solid state reaction. Samples sintered at 1150-1180 °C in oxygen contain the fewest impurity phases and show highly insulating behavior. Powder neutron diffraction results reveal that a commensurate magnetic order with a (0,0,3/2) propagation vector develops below TN2 ∼350 K. Corresponding to the appearance of the magnetic order, the sample shows a small ME effect. These results suggest that Sr4 Co2 Fe36 O 60 is a room-temperature ME material in which the origin of the ME effect is similar to those of other ME hexaferrites.

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Magnetism and magnetoelectricity of a U-type hexaferrite Sr₄ Co₂ Fe₃₆ O₆₀

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