Coercivity tuning in Co/Pd multilayer based bit patterned media

O. Hellwig; T. Hauet; T. Thomson; E. Dobisz; J. D. Risner-Jamtgaard; D. Yaney; B. D. Terris; E. E. Fullerton

doi:10.1063/1.3271679

Coercivity tuning in Co/Pd multilayer based bit patterned media

O. Hellwig, T. Hauet, T. Thomson, E. Dobisz, J. D. Risner-Jamtgaard, D. Yaney, B. D. Terris, E. E. Fullerton

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

Abstract

In order to adjust the reversal field of high anisotropy [Co (2.8 Å) /Pd (9 Å)] 8 bit patterned media (BPM), one may increase the individual Co thickness to change the overall anisotropy or alternatively combine the high anisotropy multilayer with a lower anisotropy material, thus creating a heterogeneous laminated system. In the current study, we find that [Co/Pd] 8-N [Co/Ni] N hard-soft laminated BPM allows tuning the coercivity while maintaining a narrow normalized switching field distribution (σSFD / HC), whereas homogeneous structures with increased individual Co thickness show a more pronounced increase in σSFD / HC. Possible reasons for the different behavior, such as changes in strain and texture, are discussed. © 2009 American Institute of Physics.

Original language	English
Article number	232505
Journal	Applied Physics Letters
Volume	95
Issue number	23
DOIs	https://doi.org/10.1063/1.3271679
Publication status	Published - 2009

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title = "Coercivity tuning in Co/Pd multilayer based bit patterned media",

abstract = "In order to adjust the reversal field of high anisotropy [Co (2.8 {\AA}) /Pd (9 {\AA})] 8 bit patterned media (BPM), one may increase the individual Co thickness to change the overall anisotropy or alternatively combine the high anisotropy multilayer with a lower anisotropy material, thus creating a heterogeneous laminated system. In the current study, we find that [Co/Pd] 8-N [Co/Ni] N hard-soft laminated BPM allows tuning the coercivity while maintaining a narrow normalized switching field distribution (σSFD / HC), whereas homogeneous structures with increased individual Co thickness show a more pronounced increase in σSFD / HC. Possible reasons for the different behavior, such as changes in strain and texture, are discussed. {\textcopyright} 2009 American Institute of Physics.",

author = "O. Hellwig and T. Hauet and T. Thomson and E. Dobisz and Risner-Jamtgaard, {J. D.} and D. Yaney and Terris, {B. D.} and Fullerton, {E. E.}",

note = "Hellwig, O. Hauet, T. Thomson, T. Dobisz, E. Risner-Jamtgaard, J. D. Yaney, D. Terris, B. D. Fullerton, E. E.",

year = "2009",

doi = "10.1063/1.3271679",

language = "English",

volume = "95",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Coercivity tuning in Co/Pd multilayer based bit patterned media

AU - Hellwig, O.

AU - Hauet, T.

AU - Thomson, T.

AU - Dobisz, E.

AU - Risner-Jamtgaard, J. D.

AU - Yaney, D.

AU - Terris, B. D.

AU - Fullerton, E. E.

N1 - Hellwig, O. Hauet, T. Thomson, T. Dobisz, E. Risner-Jamtgaard, J. D. Yaney, D. Terris, B. D. Fullerton, E. E.

PY - 2009

Y1 - 2009

N2 - In order to adjust the reversal field of high anisotropy [Co (2.8 Å) /Pd (9 Å)] 8 bit patterned media (BPM), one may increase the individual Co thickness to change the overall anisotropy or alternatively combine the high anisotropy multilayer with a lower anisotropy material, thus creating a heterogeneous laminated system. In the current study, we find that [Co/Pd] 8-N [Co/Ni] N hard-soft laminated BPM allows tuning the coercivity while maintaining a narrow normalized switching field distribution (σSFD / HC), whereas homogeneous structures with increased individual Co thickness show a more pronounced increase in σSFD / HC. Possible reasons for the different behavior, such as changes in strain and texture, are discussed. © 2009 American Institute of Physics.

AB - In order to adjust the reversal field of high anisotropy [Co (2.8 Å) /Pd (9 Å)] 8 bit patterned media (BPM), one may increase the individual Co thickness to change the overall anisotropy or alternatively combine the high anisotropy multilayer with a lower anisotropy material, thus creating a heterogeneous laminated system. In the current study, we find that [Co/Pd] 8-N [Co/Ni] N hard-soft laminated BPM allows tuning the coercivity while maintaining a narrow normalized switching field distribution (σSFD / HC), whereas homogeneous structures with increased individual Co thickness show a more pronounced increase in σSFD / HC. Possible reasons for the different behavior, such as changes in strain and texture, are discussed. © 2009 American Institute of Physics.

U2 - 10.1063/1.3271679

DO - 10.1063/1.3271679

M3 - Article

SN - 0003-6951

VL - 95

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

M1 - 232505

ER -

Coercivity tuning in Co/Pd multilayer based bit patterned media

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