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Coupled Spin Hall Effect of Ferrite/Feromagnetic Bilayer Films and Detection of Microwave Electromagnetic Fields
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Abstract
Designing novel spin-wave heterojunction materials and regulating their magnetic properties are key technologies for realizing spin quantum detection of microwave electromagnetic fields. In this study, A spin-wave heterojunction microwave electromagnetic field sensing detection scheme has been proposed, which modifies the inverse spin Hall effect (ISHE) by manipulating the magnetic moment distribution, anisotropic crystal field and ferromagnetic resonance line width (ΔH) of ferrite/ferromagnetic bilayer films. Then, the nanocrystalline DyCoNbZr/Bi
1
Dy
2
Fe
5
O
12
bilayer films and the spin-wave heterojunction [Pt/DyCoNbZr/Bi
1
Dy
2
Fe
5
O
12
] were fabricated, the effects of damping-like torque, field-like torque and the ferrite underlayer on the magnetization distribution of spin-wave heterojunction was analyzed. The results show that the excited microwave electromagnetic field signal can be detected with high sensitivity by inverse spin Hall voltage (V
ISHE
) detection of the spin wave heterojunction, The VISHE is directly related to the amplitude, frequency, and phase of the microwave electromagnetic field. The spin-orbit interaction between the Bi
1
Dy
2
Fe
5
O
12
and DyCoNbZr films can enable the films with low saturation magnetization to undergo an ISHE at low microwave excitation power, which lays a technical foundation for detecting the microwave electromagnetic fields using the ISHE.
Title: Coupled Spin Hall Effect of Ferrite/Feromagnetic Bilayer Films and Detection of Microwave Electromagnetic Fields
Description:
Abstract
Designing novel spin-wave heterojunction materials and regulating their magnetic properties are key technologies for realizing spin quantum detection of microwave electromagnetic fields.
In this study, A spin-wave heterojunction microwave electromagnetic field sensing detection scheme has been proposed, which modifies the inverse spin Hall effect (ISHE) by manipulating the magnetic moment distribution, anisotropic crystal field and ferromagnetic resonance line width (ΔH) of ferrite/ferromagnetic bilayer films.
Then, the nanocrystalline DyCoNbZr/Bi
1
Dy
2
Fe
5
O
12
bilayer films and the spin-wave heterojunction [Pt/DyCoNbZr/Bi
1
Dy
2
Fe
5
O
12
] were fabricated, the effects of damping-like torque, field-like torque and the ferrite underlayer on the magnetization distribution of spin-wave heterojunction was analyzed.
The results show that the excited microwave electromagnetic field signal can be detected with high sensitivity by inverse spin Hall voltage (V
ISHE
) detection of the spin wave heterojunction, The VISHE is directly related to the amplitude, frequency, and phase of the microwave electromagnetic field.
The spin-orbit interaction between the Bi
1
Dy
2
Fe
5
O
12
and DyCoNbZr films can enable the films with low saturation magnetization to undergo an ISHE at low microwave excitation power, which lays a technical foundation for detecting the microwave electromagnetic fields using the ISHE.
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