Low depinning fields in Ta-CoFeB-MgO ultrathin films with perpendicular magnetic anisotropy

C. Burrowes; N. Vernier; J. P. Adam; L. Herrera Diez; K. Garcia; I. Barisic; G. Agnus; S. Eimer; Joo Von Kim; T. Devolder; A. Lamperti; R. Mantovan; B. Ockert; E. E. Fullerton; D. Ravelosona

doi:10.1063/1.4826439

Low depinning fields in Ta-CoFeB-MgO ultrathin films with perpendicular magnetic anisotropy

C. Burrowes
, N. Vernier
, J. P. Adam
, L. Herrera Diez
, K. Garcia
, I. Barisic
, G. Agnus
, S. Eimer
, Joo Von Kim
, T. Devolder
, A. Lamperti
, R. Mantovan
, B. Ockert
, E. E. Fullerton
, D. Ravelosona

科研成果: 期刊稿件 › 文章 › 同行评审

96 引用（Scopus）

摘要

We have studied the domain-wall dynamics in Ta-CoFeB-MgO ultra-thin films with perpendicular magnetic anisotropy for various Co and Fe concentrations in both the amorphous and crystalline states. We observe three motion regimes with increasing magnetic field, which are consistent with a low fields creep, transitory depinning, and high fields Walker wall motion. The depinning fields are found to be as low as 2 mT, which is significantly lower than the values typically observed in 3d ferromagnetic metal films with perpendicular magnetic anisotropy. This work highlights a path toward advanced spintronics devices based on weak random pinning in perpendicular CoFeB films.

源语言	英语
文章编号	182401
期刊	Applied Physics Letters
卷	103
期	18
DOI	https://doi.org/10.1063/1.4826439
出版状态	已出版 - 28 10月 2013
已对外发布	是

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Burrowes, C., Vernier, N., Adam, J. P., Herrera Diez, L., Garcia, K., Barisic, I., Agnus, G., Eimer, S., Kim, J. V., Devolder, T., Lamperti, A., Mantovan, R., Ockert, B., Fullerton, E. E., & Ravelosona, D. (2013). Low depinning fields in Ta-CoFeB-MgO ultrathin films with perpendicular magnetic anisotropy. Applied Physics Letters, 103(18), 文章 182401. https://doi.org/10.1063/1.4826439

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title = "Low depinning fields in Ta-CoFeB-MgO ultrathin films with perpendicular magnetic anisotropy",

abstract = "We have studied the domain-wall dynamics in Ta-CoFeB-MgO ultra-thin films with perpendicular magnetic anisotropy for various Co and Fe concentrations in both the amorphous and crystalline states. We observe three motion regimes with increasing magnetic field, which are consistent with a low fields creep, transitory depinning, and high fields Walker wall motion. The depinning fields are found to be as low as 2 mT, which is significantly lower than the values typically observed in 3d ferromagnetic metal films with perpendicular magnetic anisotropy. This work highlights a path toward advanced spintronics devices based on weak random pinning in perpendicular CoFeB films.",

author = "C. Burrowes and N. Vernier and Adam, \{J. P.\} and \{Herrera Diez\}, L. and K. Garcia and I. Barisic and G. Agnus and S. Eimer and Kim, \{Joo Von\} and T. Devolder and A. Lamperti and R. Mantovan and B. Ockert and Fullerton, \{E. E.\} and D. Ravelosona",

year = "2013",

month = oct,

day = "28",

doi = "10.1063/1.4826439",

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Burrowes, C, Vernier, N, Adam, JP, Herrera Diez, L, Garcia, K, Barisic, I, Agnus, G, Eimer, S, Kim, JV, Devolder, T, Lamperti, A, Mantovan, R, Ockert, B, Fullerton, EE & Ravelosona, D 2013, 'Low depinning fields in Ta-CoFeB-MgO ultrathin films with perpendicular magnetic anisotropy', Applied Physics Letters, 卷 103, 号码 18, 182401. https://doi.org/10.1063/1.4826439

TY - JOUR

T1 - Low depinning fields in Ta-CoFeB-MgO ultrathin films with perpendicular magnetic anisotropy

AU - Burrowes, C.

AU - Vernier, N.

AU - Adam, J. P.

AU - Herrera Diez, L.

AU - Garcia, K.

AU - Barisic, I.

AU - Agnus, G.

AU - Eimer, S.

AU - Kim, Joo Von

AU - Devolder, T.

AU - Lamperti, A.

AU - Mantovan, R.

AU - Ockert, B.

AU - Fullerton, E. E.

AU - Ravelosona, D.

PY - 2013/10/28

Y1 - 2013/10/28

N2 - We have studied the domain-wall dynamics in Ta-CoFeB-MgO ultra-thin films with perpendicular magnetic anisotropy for various Co and Fe concentrations in both the amorphous and crystalline states. We observe three motion regimes with increasing magnetic field, which are consistent with a low fields creep, transitory depinning, and high fields Walker wall motion. The depinning fields are found to be as low as 2 mT, which is significantly lower than the values typically observed in 3d ferromagnetic metal films with perpendicular magnetic anisotropy. This work highlights a path toward advanced spintronics devices based on weak random pinning in perpendicular CoFeB films.

AB - We have studied the domain-wall dynamics in Ta-CoFeB-MgO ultra-thin films with perpendicular magnetic anisotropy for various Co and Fe concentrations in both the amorphous and crystalline states. We observe three motion regimes with increasing magnetic field, which are consistent with a low fields creep, transitory depinning, and high fields Walker wall motion. The depinning fields are found to be as low as 2 mT, which is significantly lower than the values typically observed in 3d ferromagnetic metal films with perpendicular magnetic anisotropy. This work highlights a path toward advanced spintronics devices based on weak random pinning in perpendicular CoFeB films.

UR - https://www.scopus.com/pages/publications/84889679577

U2 - 10.1063/1.4826439

DO - 10.1063/1.4826439

M3 - 文章

AN - SCOPUS:84889679577

SN - 0003-6951

VL - 103

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 182401

ER -

Low depinning fields in Ta-CoFeB-MgO ultrathin films with perpendicular magnetic anisotropy

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