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

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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 languageEnglish
Article number212504
JournalApplied Physics Letters
Volume98
Issue number21
DOIs
Publication statusPublished - 2011 May 23
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Okumura, K., Ishikura, T., Soda, M., Asaka, T., Nakamura, H., Wakabayashi, Y., & Kimura, T. (2011). Magnetism and magnetoelectricity of a U-type hexaferrite Sr4 Co2 Fe36 O60. Applied Physics Letters, 98(21), [212504]. https://doi.org/10.1063/1.3593371