L10 FePt(111)/glassy CoFeTaB bilayered structure for patterned media

Parmanand Sharma; Neelam Kaushik; Akihiro Makino; Masayoshi Esashi; Akihisa Inoue

doi:10.1063/1.3561803

L1₀ FePt(111)/glassy CoFeTaB bilayered structure for patterned media

Parmanand Sharma, Neelam Kaushik, Akihiro Makino, Masayoshi Esashi, Akihisa Inoue

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We report on the use of CoFeTaB metallic glass thin film as a soft magnetic underlayer which promotes the growth of L1₀ FePt along the preferred (111) crystallographic direction. The preferred oriented phase of L1 ₀ FePt is obtained by either in situ deposition upon a heated CoFeTaB/SiO₂/Si or at room temperature (FePt/CoFeTaB/SiO ₂/Si) followed by annealing at 400-450 C for 15 min. The latter process is shown to be advantageous in terms of the fabrication of patterned media. Pattern sizes ranging from 25-100 nm made from L1₀ FePt (111)/glassy CoFeTaB were fabricated by photo/electron beam lithography. The structural and magnetic characterizations strongly suggest the applicability of the present bilayered structure in the fabrication of high density bit-patterned magnetic recording media.

Original language	English
Article number	07B908
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3561803
Publication status	Published - 2011 Apr 1

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.3561803

Cite this

@article{f6ab41d20f284b87ba3533b522454714,

title = "L10 FePt(111)/glassy CoFeTaB bilayered structure for patterned media",

abstract = "We report on the use of CoFeTaB metallic glass thin film as a soft magnetic underlayer which promotes the growth of L10 FePt along the preferred (111) crystallographic direction. The preferred oriented phase of L1 0 FePt is obtained by either in situ deposition upon a heated CoFeTaB/SiO2/Si or at room temperature (FePt/CoFeTaB/SiO 2/Si) followed by annealing at 400-450 C for 15 min. The latter process is shown to be advantageous in terms of the fabrication of patterned media. Pattern sizes ranging from 25-100 nm made from L10 FePt (111)/glassy CoFeTaB were fabricated by photo/electron beam lithography. The structural and magnetic characterizations strongly suggest the applicability of the present bilayered structure in the fabrication of high density bit-patterned magnetic recording media.",

author = "Parmanand Sharma and Neelam Kaushik and Akihiro Makino and Masayoshi Esashi and Akihisa Inoue",

note = "Funding Information: This work is partly supported by “Grant-in-Aid for Young Scientist A/B” from JSPS, and from RIMCOF, NEDO Japan.",

year = "2011",

month = apr,

day = "1",

doi = "10.1063/1.3561803",

language = "English",

volume = "109",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "7",

}

TY - JOUR

T1 - L10 FePt(111)/glassy CoFeTaB bilayered structure for patterned media

AU - Sharma, Parmanand

AU - Kaushik, Neelam

AU - Makino, Akihiro

AU - Esashi, Masayoshi

AU - Inoue, Akihisa

N1 - Funding Information: This work is partly supported by “Grant-in-Aid for Young Scientist A/B” from JSPS, and from RIMCOF, NEDO Japan.

PY - 2011/4/1

Y1 - 2011/4/1

N2 - We report on the use of CoFeTaB metallic glass thin film as a soft magnetic underlayer which promotes the growth of L10 FePt along the preferred (111) crystallographic direction. The preferred oriented phase of L1 0 FePt is obtained by either in situ deposition upon a heated CoFeTaB/SiO2/Si or at room temperature (FePt/CoFeTaB/SiO 2/Si) followed by annealing at 400-450 C for 15 min. The latter process is shown to be advantageous in terms of the fabrication of patterned media. Pattern sizes ranging from 25-100 nm made from L10 FePt (111)/glassy CoFeTaB were fabricated by photo/electron beam lithography. The structural and magnetic characterizations strongly suggest the applicability of the present bilayered structure in the fabrication of high density bit-patterned magnetic recording media.

AB - We report on the use of CoFeTaB metallic glass thin film as a soft magnetic underlayer which promotes the growth of L10 FePt along the preferred (111) crystallographic direction. The preferred oriented phase of L1 0 FePt is obtained by either in situ deposition upon a heated CoFeTaB/SiO2/Si or at room temperature (FePt/CoFeTaB/SiO 2/Si) followed by annealing at 400-450 C for 15 min. The latter process is shown to be advantageous in terms of the fabrication of patterned media. Pattern sizes ranging from 25-100 nm made from L10 FePt (111)/glassy CoFeTaB were fabricated by photo/electron beam lithography. The structural and magnetic characterizations strongly suggest the applicability of the present bilayered structure in the fabrication of high density bit-patterned magnetic recording media.

UR - http://www.scopus.com/inward/record.url?scp=79955459523&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955459523&partnerID=8YFLogxK

U2 - 10.1063/1.3561803

DO - 10.1063/1.3561803

M3 - Article

AN - SCOPUS:79955459523

SN - 0021-8979

VL - 109

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

M1 - 07B908

ER -

L1₀ FePt(111)/glassy CoFeTaB bilayered structure for patterned media

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this