Spin Wave Resonance Frequency in Ferromagnetic Homogeneous Bilayers with Next Nearest Neighbor Interaction

Ma, Ruijiao; Rong, Jianhong; Zhang, Shuhui; Wang, Huan; Yun, Guohong

doi:10.7566/jpsj.89.044705

Cited by 3 publications

(1 citation statement)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, the effect of bulk uniaxial anisotropy on the SWR frequency in a magnetic film with a simple cubic structure employing the linear spin wave approximation and Green's function method has been demonstrated by Qiu [24][25][26]. Subsequently, the impacts of the surface anisotropy field, interlayer coupling interaction and next-neighbor interaction were also further investigated by our group [27][28][29][30][31]. In addition, the existence and importance of higher-order spin coupling have been confirmed by many researchers [32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Spin wave resonance frequency in ferromagnetic thin film with the biquadratic exchange interaction

Zhang,

Rong,

Wang

et al. 2023

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

Spin wave resonance (SWR) frequency in ferromagnetic thin film with the biquadratic exchange interaction, interlayer exchange coupling, film thickness, surface anisotropy field, and the external magnetic field has been investigated by using the linear spin-wave approximation and Green’s function techniques. In comparison to previous studies without considering the biquadratic exchange interaction, the SWR frequency behaviors of the energetically mid-higher modes were found to be highly sensitive to biquadratic exchange interaction. SWR frequencies of all modes are linearly proportional to external magnetic field. However, the SWR frequency has nonlinear dependence on the interlayer exchange coupling and surface anisotropy field. Moreover, the biquadratic exchange interaction enabled a considerable improvement in the effects of surface anisotropy field, interlayer exchange coupling, and external magnetic field on SWR frequency. Our results also reveal that a decrease in the SWR frequency of the corresponding mid-lower modes as the thickness of film is increased while the almost the same frequency gap between the energetically highest mode and lowest mode is obtained for the thicker film. These results could help improve the understanding of magnetic properties and promote magnetic materials applications in spintronic devices.

show abstract

Section: Introductionmentioning

confidence: 99%

Spin wave resonance frequency in ferromagnetic thin film with the biquadratic exchange interaction

Zhang,

Rong,

Wang

et al. 2023

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

show abstract

Spin-wave resonance frequency in ferromagnetic thin film with the next nearest neighbor interaction

Zhang²,

Rong

et al. 2021

Physica B: Condensed Matter

View full text Add to dashboard Cite

Spin wave resonance frequency in bilayer ferromagnetic films with the biquadratic exchange interaction

Zhang 张,

Wang 王,

Chang 常

et al. 2024

Chinese Phys. B

View full text Add to dashboard Cite

In this work, the dependences of spin wave resonance (SWR) frequency on the surface anisotropy field, interface exchange coupling, symmetry, biquadratic exchange (BQE) interaction, film thickness and the external magnetic field in bilayer ferromagnetic films have been theoretically analyzed by employing the linear spin wave approximation and Green’s function method. A remarkable increase of SWR frequency, except for energetically lower two modes, can be obtained in our model that takes into account the BQE interaction. Again, the effect of the external magnetic field on SWR frequency can be increased by increasing the biquadratic to interlayer exchange ratio. It has been identified that the BQE interaction is of utmost importance in improving the SWR frequency of the bilayer ferromagnetic films. In addition, for bilayer ferromagnetic films, the frequency gap between the energetically highest mode and lowest mode is found to increase with increasing the biquadratic to interlayer exchange ratio and film thickness, and with destroying the symmetry of the system. These results can be used to improve the understanding of magnetic properties in bilayer ferromagnetic films and thus may have prominent implications for future magnetic devices.

show abstract

Spin Wave Resonance Frequency in Ferromagnetic Homogeneous Bilayers with Next Nearest Neighbor Interaction

Cited by 3 publications

References 40 publications

Spin wave resonance frequency in ferromagnetic thin film with the biquadratic exchange interaction

Spin wave resonance frequency in ferromagnetic thin film with the biquadratic exchange interaction

Spin-wave resonance frequency in ferromagnetic thin film with the next nearest neighbor interaction

Spin wave resonance frequency in bilayer ferromagnetic films with the biquadratic exchange interaction

Contact Info

Product

Resources

About