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Spin waves in ferromagnetic/antiferrmagnetic bilayers under the stress field

Tao Yong-Chun Pan Jing Zhou Lan Hu Jing-Guo

Spin waves in ferromagnetic/antiferrmagnetic bilayers under the stress field

Tao Yong-Chun, Pan Jing, Zhou Lan, Hu Jing-Guo
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  • Abstract views:  3906
  • PDF Downloads:  1296
  • Cited By: 0
Publishing process
  • Received Date:  24 January 2006
  • Accepted Date:  06 November 2006
  • Published Online:  05 March 2007

Spin waves in ferromagnetic/antiferrmagnetic bilayers under the stress field

  • 1. (1)南京师范大学物理科学与技术学院,南京 210097; (2)扬州大学物理科学与技术学院,扬州 225002

Abstract: Using a method of free energy minimization, the spin wave, namely the ferromagnetic resonance, of ferromagnetic (FM)/antiferromagnetic (AFM) bilayers under the stress field has been investigated. The thin FM film is taken to be a single crystal with cubic or uniaxial magnetocrystalline anisotropy, while the thickness of AFM layer is semi-infinite and has single uniaxial magnetocrystalline anisotropy. Numerical calculation shows that stress field and the interface coupling strength will affect the behavior of FM resonance only under low magnetic field, and there are two branches of FMR modes at the critical field, which distinguishes between the weak and strong external field. The critical field depends on the direction of stress field. On the other hand, the change of the direction of the stress field can weakly affect magnetocrystalline anisotropies axis of FM layer.

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