• DOI:10.1103/PhysRevMaterials.3.124401
• Corpus ID: 195767657

Structural, magnetostatic, and magnetodynamic studies of Co/Mo-based uncompensated synthetic antiferromagnets

@article{Ogrodnik2019StructuralMA,
  title={Structural, magnetostatic, and magnetodynamic studies of Co/Mo-based uncompensated synthetic antiferromagnets},
  author={Piotr Ogrodnik and Jarosław Kanak and Maciej Czapkiewicz and Sławomir Ziȩtek and Aleksiej Pietruczik and Krzysztof Morawiec and Piotr Dłużewski and Krzysztof Dybko and Andrzej Wawro and Tomasz Stobiecki},
  journal={Physical Review Materials},
  year={2019}
}

• P. Ogrodnik, J. Kanak, +7 authors T. Stobiecki
• Published 1 July 2019
• Materials Science
• Physical Review Materials

In this work, we comprehensively investigate and discuss the structural, magnetostatic, dynamic, and magnetoresistive properties of epitaxial Co/Mo superlattices. The magnetization of the Co sublayers is coupled antiferromagnetically with a strength that depends on the thickness of the nonmagnetic Mo spacer. The magnetization and magnetoresistance hysteresis loops clearly reflect interlayer exchange coupling and the occurrence of uniaxial magnetic anisotropy induced by the strained Co sublayers. Upon accounting for a deviation of the sublayer thicknesses from the nominal value, theoretical modeling, including both micromagnetic and macrospin approaches, precisely reproduces experimental magnetic hysteresis loops, magnetoresistance curves, and ferromagnetic resonance dispersion relations. The Mo spacer thickness as a function of the interlayer magnetic coupling is determined as a fitting parameter by modeling the experimental results.