Perpendicular exchange coupling in TbFeCo/FePt bilayer films

Chao Lin Zha; Yi Song Zhang; Bin Ma; Zong Zhi Zhang; Qing Yuan Jin; Fu Xi Gan; Yao Wen Liu; Tie Ren Gao

doi:10.1088/0256-307X/23/4/060

Perpendicular exchange coupling in TbFeCo/FePt bilayer films

Chao Lin Zha, Yi Song Zhang, Bin Ma, Zong Zhi Zhang, Qing Yuan Jin, Fu Xi Gan, Yao Wen Liu, Tie Ren Gao

Electrical and Computer Engineering

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Abstract

We investigate the structure and exchange coupling in TbFeCo/FePt bilayer films. It is found that FePt has the L1₀ structure and the easy axis of the FePt film is perpendicular to the film plane. Results of the vibrating sample magnetometer and the magneto-optical Kerr effect measurements show a strong perpendicular exchange coupling between the ferrimagnetic TbFeCo layer and the hard ferromagnetic FePt layer. The magnetization direction of each layer and the process of magnetization reversal are discussed in detail. The switching field dependence on the exchange coupling has been modelled by micromagnetic simulation and the interlayer coupling constant is about -0.9erg/cm² according to this simulation.

Original language	English (US)
Pages (from-to)	978-981
Number of pages	4
Journal	Chinese Physics Letters
Volume	23
Issue number	4
DOIs	https://doi.org/10.1088/0256-307X/23/4/060
State	Published - Apr 1 2006

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title = "Perpendicular exchange coupling in TbFeCo/FePt bilayer films",

abstract = "We investigate the structure and exchange coupling in TbFeCo/FePt bilayer films. It is found that FePt has the L10 structure and the easy axis of the FePt film is perpendicular to the film plane. Results of the vibrating sample magnetometer and the magneto-optical Kerr effect measurements show a strong perpendicular exchange coupling between the ferrimagnetic TbFeCo layer and the hard ferromagnetic FePt layer. The magnetization direction of each layer and the process of magnetization reversal are discussed in detail. The switching field dependence on the exchange coupling has been modelled by micromagnetic simulation and the interlayer coupling constant is about -0.9erg/cm2 according to this simulation.",

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T1 - Perpendicular exchange coupling in TbFeCo/FePt bilayer films

AU - Zha, Chao Lin

AU - Zhang, Yi Song

AU - Ma, Bin

AU - Zhang, Zong Zhi

AU - Jin, Qing Yuan

AU - Gan, Fu Xi

AU - Liu, Yao Wen

AU - Gao, Tie Ren

PY - 2006/4/1

Y1 - 2006/4/1

N2 - We investigate the structure and exchange coupling in TbFeCo/FePt bilayer films. It is found that FePt has the L10 structure and the easy axis of the FePt film is perpendicular to the film plane. Results of the vibrating sample magnetometer and the magneto-optical Kerr effect measurements show a strong perpendicular exchange coupling between the ferrimagnetic TbFeCo layer and the hard ferromagnetic FePt layer. The magnetization direction of each layer and the process of magnetization reversal are discussed in detail. The switching field dependence on the exchange coupling has been modelled by micromagnetic simulation and the interlayer coupling constant is about -0.9erg/cm2 according to this simulation.

AB - We investigate the structure and exchange coupling in TbFeCo/FePt bilayer films. It is found that FePt has the L10 structure and the easy axis of the FePt film is perpendicular to the film plane. Results of the vibrating sample magnetometer and the magneto-optical Kerr effect measurements show a strong perpendicular exchange coupling between the ferrimagnetic TbFeCo layer and the hard ferromagnetic FePt layer. The magnetization direction of each layer and the process of magnetization reversal are discussed in detail. The switching field dependence on the exchange coupling has been modelled by micromagnetic simulation and the interlayer coupling constant is about -0.9erg/cm2 according to this simulation.

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Perpendicular exchange coupling in TbFeCo/FePt bilayer films

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