Publication detail

Current-induced domain wall motion and magnetization dynamics in CoFeB/Cu/Co nanostripes

UHLÍŘ, V. VOGEL, J. ROUGEMAILLE, N. FRUCHART, O. ISHAQUE, Z. CROS, V. CAMARERO, J. CEZAR, J. SIROTTI, F. PIZZINI, S.

Czech title

Proudem-indukovaný pohyb doménových stěn v CoFeB/Cu/Co nanoproužcích

English title

Current-induced domain wall motion and magnetization dynamics in CoFeB/Cu/Co nanostripes

Type

journal article - other

Language

en

Original abstract

Current-induced domain wall motion and magnetization dynamics in the CoFeB layer of CoFeB/Cu/Co nanostripes were studied using photoemission electron microscopy combined with x-ray magnetic circular dichroism (XMCD-PEEM). Quasi-static measurements show that current-induced domain wall motion in the CoFeB layer is similar to the one observed in the NiFe layer of NiFe/Cu/Co trilayers, although the threshold current densities for domain wall depinning are lower. Time-resolved XMCD-PEEM measurements are used as an efficient probe of domain wall depinning statistics. They also reveal that, during the application of current pulses, the CoFeB magnetization rotates in the direction transverse to the nanostripe. The corresponding tilt angles have been quantified and compared to analytical and micromagnetic calculations, highlighting the influence of magnetostatic interactions between the two magnetic layers on the magnetization rotation.

Czech abstract

Článek se zabývá pohybem doménových stěn v CoFeB/Cu/Co nanoproužcích indukovaným elektrickým proudem.

English abstract

Current-induced domain wall motion and magnetization dynamics in the CoFeB layer of CoFeB/Cu/Co nanostripes were studied using photoemission electron microscopy combined with x-ray magnetic circular dichroism (XMCD-PEEM). Quasi-static measurements show that current-induced domain wall motion in the CoFeB layer is similar to the one observed in the NiFe layer of NiFe/Cu/Co trilayers, although the threshold current densities for domain wall depinning are lower. Time-resolved XMCD-PEEM measurements are used as an efficient probe of domain wall depinning statistics. They also reveal that, during the application of current pulses, the CoFeB magnetization rotates in the direction transverse to the nanostripe. The corresponding tilt angles have been quantified and compared to analytical and micromagnetic calculations, highlighting the influence of magnetostatic interactions between the two magnetic layers on the magnetization rotation.

Keywords in Czech

X-PEEM, Magnetizace, Doménová stěna, CoFeB/Cu/Co

Keywords in English

X-PEEM, Magnetization, Domain Wall, CoFeB/Cu/Co

RIV year

2011

Released

15.12.2011

ISSN

0953-8984

Volume

24

Number

2

Pages from–to

024213-1–024213-9

Pages count

9

BIBTEX


@article{BUT75970,
  author="Vojtěch {Uhlíř} and Jan {Vogel} and Nicolas {Rougemaille} and Olivier {Fruchart} and Zahid {Ishaque} and Vincent {Cros} and Julio {Camarero} and J. C. {Cezar} and F. {Sirotti} and Stefania {Pizzini},
  title="Current-induced domain wall motion and magnetization dynamics in CoFeB/Cu/Co nanostripes",
  year="2011",
  volume="24",
  number="2",
  month="December",
  pages="024213-1--024213-9",
  issn="0953-8984"
}