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Coupled Granular/Continuous Media – Results and Challenges

Published online by Cambridge University Press:  04 September 2017

Horia Gavrila and
Doina Elena Gavrila
Horia Gavrila*
Affiliation:
“Politehnica” University of Bucharest, 313 Splaiul Independentei, Bucharest 060042, Romania
Doina Elena Gavrila
Affiliation:
“Politehnica” University of Bucharest, 313 Splaiul Independentei, Bucharest 060042, Romania
*
*(Email: horia.gavrila@upb.ro)
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Abstract

While the most promising longitudinal recording systems cannot surpass the theoretical limit of about 200 Gb/in2 for areal recording density and the demand for higher densities is permanently increasing, the perpendicular magnetic recording constitutes the realistic issue to the longitudinal one. The perpendicular magnetic recording offers significant advantages, the most important being stronger write and read fields, and therefore the use of media of higher anisotropy, smaller grain size, higher signal-to-noise ratio, and a better thermal stability. Unfortunately, the perpendicular recording has to cope some important physical and technological difficulties. To overcome them, many ingenious solutions were proposed. In this paper the coupled granular/continuous (CGC) media, a subtle association of the continuous and, respectively, granular media, are analysed from the viewpoint of their magnetic and recording properties. The challenges and possible improvements of CGC media are discussed.

Keywords

Magnetic propertiesNanostructureMicroelectronics

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Type
Articles
Information
MRS Advances , Volume 2 , Issue 49: International Materials Research Congress XXV , 2017, pp. 2661 - 2668
Copyright
Copyright © Materials Research Society 2017 

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References

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