Magnetic properties of monodispersed Co/CoO clusters
By D. Peng, K. Sumiyama, T. Hihara, S. Yamamuro, T. Konno. 2000
181 citations recorded by the source corpus.
Monodispersed Co/CoO cluster assemblies with the mean cluster sizes of 6 and 13 nm have been prepared by a plasma-gas condensation type cluster beam deposition apparatus. We measured the effects of the oxygen gas flow rate during deposition, temperature, and cluster size on the coercivity and hysteresis loop shift induced by field cooling. The large exchange bias field (10.2 kOe) and coercivity (5 kOe) were observed at 5 K for the monodispersed Co/CoO cluster assembly with $d=6\mathrm{nm}.$ The correlations between unidirectional anisotropy and uniaxial anisotropy, training effect and magnetic relaxation can be interpreted by the hypothesis of a spin disorder in the interfacial layer between the antiferromagnetic CoO shell and the ferromagnetic Co core.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/56ba443274ff21b1717a1ed1250be3587dcadbc1
How researchers see this paper
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- K. Sumiyama
- S. Tanemura
- T. Hihara
- Dong Liang Peng
- R. Katoh
- L. Miao
- W. Wunderlich
- M. Tanemura
Citations in the corpus
- Fabrication and characterization of anatase/rutile–TiO2 thin films by magnetron sputtering: a review (2005, methodology): “7!10 K8 m/s are different in the field cooled and non-field cooled states [23,25].”
- Structure and magnetic properties of Co/CoO and Co/Si core–shell cluster assemblies prepared via gas-phase (2005, methodology): “8(a), the magnetic relaxation obeys the following logarithmic time dependence [25,28]:”