Structural and magnetic properties in Heusler-type ferromagnet/ antiferromagnet bilayers

N. Fukatani; K. Inagaki; T. Miyawaki; K. Ueda; H. Asano

doi:10.1063/1.4794133

Structural and magnetic properties in Heusler-type ferromagnet/ antiferromagnet bilayers

N. Fukatani^*, K. Inagaki, T. Miyawaki, K. Ueda, H. Asano

^*Corresponding author for this work

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

11 Citations (Scopus)

Abstract

The structure and magnetic properties of Heusler ferromagnet/ antiferromagnet (FM/AFM) bilayers were investigated. Structural characterization revealed that Fe₂CrSi/Ru₂MnGe bilayers were epitaxially grown with an L2₁ ordered structure when the Ru₂MnGe growth temperature was 573 K. The magnetization curve indicates that exchange bias occurs in the Fe₂CrSi/Ru₂MnGe bilayers at 77 K. The appearance of an exchange-anisotropy field H_ex depends on the growth of Ru₂MnGe layer, indicating that the exchange bias originates from the epitaxial Fe₂CrSi/Ru₂MnGe interface. The exchange anisotropy energy J_k of the Fe₂CrSi/Ru₂MnGe and Co₂MnGe/Ru₂MnGe bilayer systems appears to follow a Heisenberg-like exchange coupling model. This suggests that the Cr and Mn interface atoms in the FM layers play significant roles in exchange coupling in the Fe₂CrSi/Ru₂MnGe and Co₂MnGe/Ru ₂MnGe bilayer systems, respectively.

Original language	English
Article number	17C103
Journal	Journal of Applied Physics
Volume	113
Issue number	17
DOIs	https://doi.org/10.1063/1.4794133
Publication status	Published - 2013 May 7
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Structural and magnetic properties in Heusler-type ferromagnet/ antiferromagnet bilayers",

abstract = "The structure and magnetic properties of Heusler ferromagnet/ antiferromagnet (FM/AFM) bilayers were investigated. Structural characterization revealed that Fe2CrSi/Ru2MnGe bilayers were epitaxially grown with an L21 ordered structure when the Ru2MnGe growth temperature was 573 K. The magnetization curve indicates that exchange bias occurs in the Fe2CrSi/Ru2MnGe bilayers at 77 K. The appearance of an exchange-anisotropy field Hex depends on the growth of Ru2MnGe layer, indicating that the exchange bias originates from the epitaxial Fe2CrSi/Ru2MnGe interface. The exchange anisotropy energy Jk of the Fe2CrSi/Ru2MnGe and Co2MnGe/Ru2MnGe bilayer systems appears to follow a Heisenberg-like exchange coupling model. This suggests that the Cr and Mn interface atoms in the FM layers play significant roles in exchange coupling in the Fe2CrSi/Ru2MnGe and Co2MnGe/Ru 2MnGe bilayer systems, respectively.",

author = "N. Fukatani and K. Inagaki and T. Miyawaki and K. Ueda and H. Asano",

note = "Funding Information: This work was partially supported by Grants-in-Aid for Scientific Research (Nos. 20360005 and 23656214) from the Ministry of Education, Culture, Sports, Science and Technology and by a Grant-in-Aid from the Japan Society for the Promotion of Science.",

year = "2013",

month = may,

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doi = "10.1063/1.4794133",

language = "English",

volume = "113",

journal = "Journal of Applied Physics",

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T1 - Structural and magnetic properties in Heusler-type ferromagnet/ antiferromagnet bilayers

AU - Fukatani, N.

AU - Inagaki, K.

AU - Miyawaki, T.

AU - Ueda, K.

AU - Asano, H.

N1 - Funding Information: This work was partially supported by Grants-in-Aid for Scientific Research (Nos. 20360005 and 23656214) from the Ministry of Education, Culture, Sports, Science and Technology and by a Grant-in-Aid from the Japan Society for the Promotion of Science.

PY - 2013/5/7

Y1 - 2013/5/7

N2 - The structure and magnetic properties of Heusler ferromagnet/ antiferromagnet (FM/AFM) bilayers were investigated. Structural characterization revealed that Fe2CrSi/Ru2MnGe bilayers were epitaxially grown with an L21 ordered structure when the Ru2MnGe growth temperature was 573 K. The magnetization curve indicates that exchange bias occurs in the Fe2CrSi/Ru2MnGe bilayers at 77 K. The appearance of an exchange-anisotropy field Hex depends on the growth of Ru2MnGe layer, indicating that the exchange bias originates from the epitaxial Fe2CrSi/Ru2MnGe interface. The exchange anisotropy energy Jk of the Fe2CrSi/Ru2MnGe and Co2MnGe/Ru2MnGe bilayer systems appears to follow a Heisenberg-like exchange coupling model. This suggests that the Cr and Mn interface atoms in the FM layers play significant roles in exchange coupling in the Fe2CrSi/Ru2MnGe and Co2MnGe/Ru 2MnGe bilayer systems, respectively.

AB - The structure and magnetic properties of Heusler ferromagnet/ antiferromagnet (FM/AFM) bilayers were investigated. Structural characterization revealed that Fe2CrSi/Ru2MnGe bilayers were epitaxially grown with an L21 ordered structure when the Ru2MnGe growth temperature was 573 K. The magnetization curve indicates that exchange bias occurs in the Fe2CrSi/Ru2MnGe bilayers at 77 K. The appearance of an exchange-anisotropy field Hex depends on the growth of Ru2MnGe layer, indicating that the exchange bias originates from the epitaxial Fe2CrSi/Ru2MnGe interface. The exchange anisotropy energy Jk of the Fe2CrSi/Ru2MnGe and Co2MnGe/Ru2MnGe bilayer systems appears to follow a Heisenberg-like exchange coupling model. This suggests that the Cr and Mn interface atoms in the FM layers play significant roles in exchange coupling in the Fe2CrSi/Ru2MnGe and Co2MnGe/Ru 2MnGe bilayer systems, respectively.

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ER -

Structural and magnetic properties in Heusler-type ferromagnet/ antiferromagnet bilayers

Abstract

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