Role of underlayer for segregated structure formation of CoCrPt-SiO<sub>2</sub>granular thin film

Hirayama, Yoshiyuki; Tamai, I.; Takekuma, I.; Nakatani, Ryoichi

doi:10.1088/1742-6596/165/1/012033

Cited by 10 publications

(5 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[3][4][5] However, an alternative approach based on ion irradiation was considered in recent works. In this regard, the fluence dependence of the magnetic properties of exposed Co/Pd ͑Co/Pt, Fe/Pd, and Fe/Pt͒ multilayers has intensively been investigated in the past employing various nonmagnetic ion specimens ͑i.e., He, Ar, and Ga͒.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of granular CoCrPt:SiO2 films as tailored by Co+ irradiation

Tibus

Strache

Springer

et al. 2010

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Magnetic properties of granular CoCrPt:SiO2 films as tailored by Co+ irradiation

Tibus

Strache

Springer

et al. 2010

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…Magnetic thin films are produced by magnetron sputtering and they exhibit nanoscopic surface roughness 26 27 . Depending on the sputtering conditions such as incident power, pressure, temperature and seed-layer, the degree of surface roughness can be varied on an angstrom-scale, giving rise to either continuous or granular magnetic media.…”

mentioning

confidence: 99%

Effect of angstrom-scale surface roughness on the self-assembly of polystyrene-polydimethylsiloxane block copolymer

Kundu

Ganesan

Gaur

et al. 2012

Sci Rep

View full text Add to dashboard Cite

Self-assembly of block copolymers has been identified as a potential candidate for high density fabrication of nanostructures. However, the factors affecting its reliability and reproducibility as a patterning technique on various kinds of surfaces are not well-established. Studies pertaining to block copolymer self-assembly have been confined to ultra-flat substrates without taking into consideration the effect of surface roughness. Here, we show that a slight change in the angstrom-scale roughness arising from the surface of a material creates a profound effect on the self-assembly of polystyrene-polydimethylsiloxane block copolymer. Its self-assembly was found to be dependent on both the root mean square roughness (Rrms) of the surface and the type of solvent annealing system used. It was observed that surface with Rrms< 5.0 Å showed self-assembly. Above this value, the kinetic hindrance posed by the surface roughness on the block copolymer leads to its conforming to the surface without observable phase separation.

show abstract

“…Isolated grains and amorphous-like grain boundaries were observed in all images. The white-contrast portion located in the grain boundaries was thought to be SiO 2 by many authors [11,12], which serves as the barrier to decouple the neighbor magnetic grains. However, great differences of grain sizes and isolated degree were existed in CoCrPt-SiO 2 films deposited on Ru seed layers with different thickness.…”

Section: Resultsmentioning

confidence: 99%

The Influences of Ru Seed Layer Microstructure on Structural Properties of CoCrPt-SiO<sub>2</sub> Perpendicular Media

Zhang

Sheng

Wang

et al. 2015

AMR

View full text Add to dashboard Cite

CoCrPt-SiO2granular film is well known as a perpendicular magnetic recording (PMR) media. To control the segregated structure of the recording layer, the role of the Ru underlayer is important. CoCrPt-SiO2perpendicular recording films were prepared by magnetron sputtering, with a series of Ru films as seed layer. The microstructure of Ru seed layers and their influences on the grain size, roughness and surface morphology of CoCrPt-SiO2granular films were investigated. It was found that the microstructure of seed layer obviously effected the structure and grain isolation of recording layers. The grain size and roughness of CoCrPt-SiO2recording layer were both increased with increasing the thickness of Ru seed layer. It is concluded that the thin and rough Ru seed layer is suitable for high-density magnetic recording media, and Ru seed layer with suitable thickness is very helpful for the achievement of perfect isolation and excellent magnetic properties. The result revealed that it was relatively easy for the CoCrPt grains to get perfect isolation with Ru thickness of 70 nm.

show abstract

Role of underlayer for segregated structure formation of CoCrPt-SiO₂granular thin film

Cited by 10 publications

References 9 publications

Magnetic properties of granular CoCrPt:SiO2 films as tailored by Co+ irradiation

Magnetic properties of granular CoCrPt:SiO2 films as tailored by Co+ irradiation

Effect of angstrom-scale surface roughness on the self-assembly of polystyrene-polydimethylsiloxane block copolymer

The Influences of Ru Seed Layer Microstructure on Structural Properties of CoCrPt-SiO<sub>2</sub> Perpendicular Media

Contact Info

Product

Resources

About

Role of underlayer for segregated structure formation of CoCrPt-SiO2granular thin film

Cited by 10 publications

References 9 publications

Magnetic properties of granular CoCrPt:SiO2 films as tailored by Co+ irradiation

Magnetic properties of granular CoCrPt:SiO2 films as tailored by Co+ irradiation

Effect of angstrom-scale surface roughness on the self-assembly of polystyrene-polydimethylsiloxane block copolymer

The Influences of Ru Seed Layer Microstructure on Structural Properties of CoCrPt-SiO<sub>2</sub> Perpendicular Media

Contact Info

Product

Resources

About

Role of underlayer for segregated structure formation of CoCrPt-SiO₂granular thin film