Volume contribution of exchange-coupling-induced uniaxial anisotropy in Fe/CoO/MgO(001) system

J. Zhu; Q. Li; J. X. Li; Z. Ding; C. Y. Won; Y. Z. Wu

doi:10.1063/1.4829009

Volume contribution of exchange-coupling-induced uniaxial anisotropy in Fe/CoO/MgO(001) system

J. Zhu, Q. Li, J. X. Li, Z. Ding, C. Y. Won, Y. Z. Wu

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

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Abstract

An unusual volume contribution of exchange-coupling-induced uniaxial anisotropy in a single-crystalline Fe/CoO/MgO(001) system was discovered and measured using the magneto-optical Kerr effect. The observed volume contribution emerges with the establishment of CoO antiferromagnetic order below the CoO blocking temperature or above a critical CoO thickness. It decays with decreasing exchange coupling strength tuned by inserting a MgO layer between the Fe and CoO layers. The volume anisotropy of the Fe layer is attributed to the strain transferred from the CoO layer induced by the magnetostriction effect through a field cooling process. Our results indicate that the strain in antiferromagnetic film can be applied to control the exchange coupling effect in the future spintronics devices.

Original language	English
Article number	173912
Journal	Journal of Applied Physics
Volume	114
Issue number	17
DOIs	https://doi.org/10.1063/1.4829009
Publication status	Published - 7 Nov 2013

Bibliographical note

Funding Information:
This work was supported by MOST (Nos. 2011CB921801 and 2009CB929203), by NSFC of China (Nos. 10925416 and 11274074), by WHMFC (No. WHMFCKF2011008), and by the National Research Foundation of Korea Grant funded by the Korean Government (2012R1A1A2007524).

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title = "Volume contribution of exchange-coupling-induced uniaxial anisotropy in Fe/CoO/MgO(001) system",

abstract = "An unusual volume contribution of exchange-coupling-induced uniaxial anisotropy in a single-crystalline Fe/CoO/MgO(001) system was discovered and measured using the magneto-optical Kerr effect. The observed volume contribution emerges with the establishment of CoO antiferromagnetic order below the CoO blocking temperature or above a critical CoO thickness. It decays with decreasing exchange coupling strength tuned by inserting a MgO layer between the Fe and CoO layers. The volume anisotropy of the Fe layer is attributed to the strain transferred from the CoO layer induced by the magnetostriction effect through a field cooling process. Our results indicate that the strain in antiferromagnetic film can be applied to control the exchange coupling effect in the future spintronics devices.",

author = "J. Zhu and Q. Li and Li, {J. X.} and Z. Ding and Won, {C. Y.} and Wu, {Y. Z.}",

note = "Funding Information: This work was supported by MOST (Nos. 2011CB921801 and 2009CB929203), by NSFC of China (Nos. 10925416 and 11274074), by WHMFC (No. WHMFCKF2011008), and by the National Research Foundation of Korea Grant funded by the Korean Government (2012R1A1A2007524).",

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doi = "10.1063/1.4829009",

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T1 - Volume contribution of exchange-coupling-induced uniaxial anisotropy in Fe/CoO/MgO(001) system

AU - Zhu, J.

AU - Li, Q.

AU - Li, J. X.

AU - Ding, Z.

AU - Won, C. Y.

AU - Wu, Y. Z.

N1 - Funding Information: This work was supported by MOST (Nos. 2011CB921801 and 2009CB929203), by NSFC of China (Nos. 10925416 and 11274074), by WHMFC (No. WHMFCKF2011008), and by the National Research Foundation of Korea Grant funded by the Korean Government (2012R1A1A2007524).

PY - 2013/11/7

Y1 - 2013/11/7

N2 - An unusual volume contribution of exchange-coupling-induced uniaxial anisotropy in a single-crystalline Fe/CoO/MgO(001) system was discovered and measured using the magneto-optical Kerr effect. The observed volume contribution emerges with the establishment of CoO antiferromagnetic order below the CoO blocking temperature or above a critical CoO thickness. It decays with decreasing exchange coupling strength tuned by inserting a MgO layer between the Fe and CoO layers. The volume anisotropy of the Fe layer is attributed to the strain transferred from the CoO layer induced by the magnetostriction effect through a field cooling process. Our results indicate that the strain in antiferromagnetic film can be applied to control the exchange coupling effect in the future spintronics devices.

AB - An unusual volume contribution of exchange-coupling-induced uniaxial anisotropy in a single-crystalline Fe/CoO/MgO(001) system was discovered and measured using the magneto-optical Kerr effect. The observed volume contribution emerges with the establishment of CoO antiferromagnetic order below the CoO blocking temperature or above a critical CoO thickness. It decays with decreasing exchange coupling strength tuned by inserting a MgO layer between the Fe and CoO layers. The volume anisotropy of the Fe layer is attributed to the strain transferred from the CoO layer induced by the magnetostriction effect through a field cooling process. Our results indicate that the strain in antiferromagnetic film can be applied to control the exchange coupling effect in the future spintronics devices.

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U2 - 10.1063/1.4829009

DO - 10.1063/1.4829009

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 17

M1 - 173912

ER -

Volume contribution of exchange-coupling-induced uniaxial anisotropy in Fe/CoO/MgO(001) system

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