Inductive determination of the optimum tunnel barrier thickness in magnetic tunneling junction stacks for spin torque memory applications

@article{SerranoGuisan2011InductiveDO,
  title={Inductive determination of the optimum tunnel barrier thickness in magnetic tunneling junction stacks for spin torque memory applications},
  author={Santiago Serrano-Guisan and Witold Skowroński and Jerzy Wrona and Niklas Liebing and Maciej Czapkiewicz and Tomasz Stobiecki and G{\"u}nter Reiss and Hans Werner Schumacher},
  journal={Journal of Applied Physics},
  year={2011},
  volume={110},
  pages={023906}
}
We use pulsed inductive microwave magnetometry to study the precessional magnetization dynamics of the free layer in CoFeB/MgO/CoFeB based magnetic tunneling junction stacks with varying MgO barrier thickness. From the field dependence of the precession frequency we are able to derive the uniaxial anisotropy energy of the free layer and the exchange coupling between the free and the pinned layer. Furthermore the field dependence of the effective damping parameter is derived. Below a certain… 

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