Publication detail

Analysis of oxygen induced anisotropy crossover in Pt/Co/MOx trilayers

MANCHON, A. DUCRUET, C. LOMBARD, L. AUFFRET, S. RODMACQ, B. DIENY, B. PIZZINI, S. VOGEL, J. UHLÍŘ, V. HOCHSTRASSER, M. PANACCIONE, G.

Czech title

Analýza přechodu anizotropie v Pt/Co/MOx trojvrstvách vyvolaného kyslíkem.

English title

Analysis of oxygen induced anisotropy crossover in Pt/Co/MOx trilayers

Type

journal article - other

Language

en

Original abstract

Extraordinary Hall effect and x-ray spectroscopy measurements have been performed on a series of Pt/Co/MOx trilayers (M=Al, Mg, Ta, etc.) in order to investigate the role of oxidation in the onset of perpendicular magnetic anisotropy at the Co/MOx interface. It is observed that varying the plasma oxidation time modifies the magnetic properties of the Co layer, inducing a magnetic anisotropy crossover from in plane to out of plane. We focused on the influence of plasma oxidation on Pt/Co/AlOx perpendicular magnetic anisotropy. The interfacial electronic structure is analyzed via x-ray photoelectron spectroscopy measurements. It is shown that the maximum of out-of-plane magnetic anisotropy corresponds to the appearance of a significant density of Co-O bondings at the Co/AlOx interface. (C) 2008 American Institute of Physics.

Czech abstract

Byla provedena měření extraordinárního Hallova jevu a rentgenové spektroskopie na séri vzorků Pt/Co/MOx (M=Al, Mg, Ta, etc.) s cílem zjistit roli oxidace na magnetickou anisotropii rozhraní Co/MOx. Změnou doby oxidace v kyslíkové plazmě dochází k ovlivnění magnetických vlastností vrstvy Co a ke změně magnetické anizotropie z rovinné na kolmou k rovině vrstvy. Zaměřili jsme se na vliv oxidace na kolmou anizotropii v systému Pt/Co/AlOx. Elektronová struktura na rozhraních vrstev je analyzována pomocí rentgenové fotoemisní spektroskopie. Bylo prokázáno, že maximální magnetická anizotropie kolmá k rovině vrstvy odpovídá pozorování zvýšené hustoty vazeb Co-O na rozhraní Co/AlOx.

English abstract

Extraordinary Hall effect and x-ray spectroscopy measurements have been performed on a series of Pt/Co/MOx trilayers (M=Al, Mg, Ta, etc.) in order to investigate the role of oxidation in the onset of perpendicular magnetic anisotropy at the Co/MOx interface. It is observed that varying the plasma oxidation time modifies the magnetic properties of the Co layer, inducing a magnetic anisotropy crossover from in plane to out of plane. We focused on the influence of plasma oxidation on Pt/Co/AlOx perpendicular magnetic anisotropy. The interfacial electronic structure is analyzed via x-ray photoelectron spectroscopy measurements. It is shown that the maximum of out-of-plane magnetic anisotropy corresponds to the appearance of a significant density of Co-O bondings at the Co/AlOx interface. (C) 2008 American Institute of Physics.

Keywords in Czech

Magnetická anisotropie; kolmá anisotropie; Au multivrstvy; Rozhraní; Oxidace; Co; Magnetoresistance; Monovrstvy

Keywords in English

MAGNETIC TUNNEL-JUNCTIONS; MAGNETOCRYSTALLINE ANISOTROPY; PERPENDICULAR ANISOTROPY; AU MULTILAYERS; INTERFACE; OXIDATION; CO; MAGNETORESISTANCE; MONOLAYERS; INPLANE

RIV year

2008

Released

15.08.2008

ISSN

0021-8979

Volume

104

Number

4

Pages from–to

043914-1–043914-7

Pages count

7

BIBTEX


@article{BUT47156,
  author="Aurélien {Manchon} and Clarisse {Ducruet} and Lucien {Lombard} and Stéphane {Auffret} and Bernard {Rodmacq} and Bernard {Dieny} and Stefania {Pizzini} and Jan {Vogel} and Vojtěch {Uhlíř} and Michael {Hochstrasser} and Giancarlo {Panaccione},
  title="Analysis of oxygen induced anisotropy crossover in Pt/Co/MOx trilayers",
  year="2008",
  volume="104",
  number="4",
  month="August",
  pages="043914-1--043914-7",
  issn="0021-8979"
}