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首页> 外文期刊>Journal of Experimental and Theoretical Physics >lhnomogeneous ferromagnetic resonance modes in [Fe/Cr]_n superlattices with a high biquadratic exchange constant
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lhnomogeneous ferromagnetic resonance modes in [Fe/Cr]_n superlattices with a high biquadratic exchange constant

机译：具有高双二次交换常数的[Fe / Cr] _n超晶格中的非均质铁磁共振模式

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摘要

In a set of [Fe/Cr]_n superlattices, magnetization curves and spectra of ferromagnetic resonance under an in-plane magnetic field have been studied at room temperature. Along with the acoustic branch, several additional branches have been observed in resonance spectra. Resonance spectra have been calculated analytically for a structure with an infinite number of layers and numerically for finite numbers of layers in real samples using a model of biquadratic exchange taking account of the fourth-order magnetic anisotropy. A possibility of describing both static and resonance properties of the system in terms of this model has been demonstrated.
机译：在一组[Fe / Cr] _n超晶格中，研究了在室温下在平面磁场下的磁化曲线和铁磁共振谱。与声支一起，在共振谱中还观察到了几个其他支。考虑到四阶磁各向异性，已经使用双二次交换模型分析了具有无限层数的结构的共振谱，并通过数值计算了真实样品中有限层数的共振谱。已经证明了用这种模型描述系统的静态和共振特性的可能性。

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