Magnetic microstructure observations of Co-Cr-Ta films using neutron scattering

Maeda, Yasushi; Rogers, David J.; Song, Ohsung; Suzuki, Jun–ichi; Morii, Yukio; Takei, Kuniharu

doi:10.1063/1.360977

Cited by 1 publication

(1 citation statement)

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“…Although SANS revealed the existence of a dominant scale in the magnetic microstructure of the order of several nm in the film [25], we assume that the reduction in media noise is partly due to the enhanced magnetic isolation caused by strong Cr-enrichment at grain boundaries.…”

Section: E Tu Addition Eflectmentioning

confidence: 99%

Magnetic microstructures produced by compositional separation in Co-Cr based alloy thin films

Maeda

Rogers²,

Song³

et al. 1997

IEEE Trans. Magn.

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Compositional separation (CS) has been observed to occur in Co-Cr based alloy thin films producing fine, Co-enriched, strongly ferromagnetic regions within the crystal grains. This CS exhibits a strong correlation with film magnetic properties and may hold the potential for engineering a "particulate type" magnetic microstructure suitable for high density magnetic recording. In this study, we first investigated the effect on CS of varying several growth parameters, with the aim of better understanding how to control the compositional and magnetic microstructures. In particular, reduction in film thickness was found to be very effective for enhancing CS and producing finer in-grain ferromagnetic regions with less coalescence. We therefore proceeded to perform point magnetic recording in Co-Cr films of various thicknesses and found that, although thinner films do support smaller bits, further studies on control of CS and promotion of magnetic isolation of Co-enriched, ferromagnetic regions will be necessary in order to utilize the full potential of cs.

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Section: E Tu Addition Eflectmentioning

confidence: 99%