Exchange-coupling of c-axis oriented L10-FePd and Fe in FePd/Fe thin films

T. Ichitsubo; S. Takashima; E. Matsubara; Y. Tamada; T. Ono

doi:10.1063/1.3514582

Exchange-coupling of c-axis oriented L1₀-FePd and Fe in FePd/Fe thin films

T. Ichitsubo, S. Takashima, E. Matsubara, Y. Tamada, T. Ono

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

13 Citations (Scopus)

Abstract

This letter reports the control of the c -axis orientation and the magnetic properties of L 1₀ FePd in the well-annealed FePd/Fe thin films Fe (20 nm) /FePd (10 nm) /Fe (5 nm) / SiO₂ -substrate and Fe (20 nm) /FePd (5 nm) /Fe (5 nm) / SiO₂ -substrate, with the compositions of dual phase region in phase equilibrium. After annealing at 550 °C for 24 h, the c -axis of L1₀ FePd is controlled to be oriented in the normal direction in the soft Fe matrix. These thin films exhibit the exchange-coupling of hard FePd with soft Fe, and a characteristic spring-magnet behavior showed up reversibly as a significant jump from positive to negative in the magnetization reversal.

Original language	English
Article number	182508
Journal	Applied Physics Letters
Volume	97
Issue number	18
DOIs	https://doi.org/10.1063/1.3514582
Publication status	Published - 2010 Nov 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Exchange-coupling of c-axis oriented L10-FePd and Fe in FePd/Fe thin films",

abstract = "This letter reports the control of the c -axis orientation and the magnetic properties of L 10 FePd in the well-annealed FePd/Fe thin films Fe (20 nm) /FePd (10 nm) /Fe (5 nm) / SiO2 -substrate and Fe (20 nm) /FePd (5 nm) /Fe (5 nm) / SiO2 -substrate, with the compositions of dual phase region in phase equilibrium. After annealing at 550 °C for 24 h, the c -axis of L10 FePd is controlled to be oriented in the normal direction in the soft Fe matrix. These thin films exhibit the exchange-coupling of hard FePd with soft Fe, and a characteristic spring-magnet behavior showed up reversibly as a significant jump from positive to negative in the magnetization reversal.",

author = "T. Ichitsubo and S. Takashima and E. Matsubara and Y. Tamada and T. Ono",

note = "Funding Information: This work was partly supported by Grant-in-Aid for “Wakate Kenkyu A (Grant No. 20686043)” from JSPS, Japan. One of the authors, T.I., was grateful to Ms. Niedziela, Jennifer Lynn, for reading and correcting our manuscript. ",

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AU - Ichitsubo, T.

AU - Takashima, S.

AU - Matsubara, E.

AU - Tamada, Y.

AU - Ono, T.

N1 - Funding Information: This work was partly supported by Grant-in-Aid for “Wakate Kenkyu A (Grant No. 20686043)” from JSPS, Japan. One of the authors, T.I., was grateful to Ms. Niedziela, Jennifer Lynn, for reading and correcting our manuscript.

PY - 2010/11/1

Y1 - 2010/11/1

N2 - This letter reports the control of the c -axis orientation and the magnetic properties of L 10 FePd in the well-annealed FePd/Fe thin films Fe (20 nm) /FePd (10 nm) /Fe (5 nm) / SiO2 -substrate and Fe (20 nm) /FePd (5 nm) /Fe (5 nm) / SiO2 -substrate, with the compositions of dual phase region in phase equilibrium. After annealing at 550 °C for 24 h, the c -axis of L10 FePd is controlled to be oriented in the normal direction in the soft Fe matrix. These thin films exhibit the exchange-coupling of hard FePd with soft Fe, and a characteristic spring-magnet behavior showed up reversibly as a significant jump from positive to negative in the magnetization reversal.

AB - This letter reports the control of the c -axis orientation and the magnetic properties of L 10 FePd in the well-annealed FePd/Fe thin films Fe (20 nm) /FePd (10 nm) /Fe (5 nm) / SiO2 -substrate and Fe (20 nm) /FePd (5 nm) /Fe (5 nm) / SiO2 -substrate, with the compositions of dual phase region in phase equilibrium. After annealing at 550 °C for 24 h, the c -axis of L10 FePd is controlled to be oriented in the normal direction in the soft Fe matrix. These thin films exhibit the exchange-coupling of hard FePd with soft Fe, and a characteristic spring-magnet behavior showed up reversibly as a significant jump from positive to negative in the magnetization reversal.

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