Microscopic origin of the reduced magnetocrystalline anisotropy with increasing oxide contenct in Co80Pt20:oxide thin films

W. Zhang, Simon A. Morton, P.K.J. Wong, Bin Lu, Y. Xu, Machiel Pieter de Jong, Wilfred Gerard van der Wiel, Gerrit van der Laan

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Abstract

Angle-dependent x-ray magnetic circular dichroism at the Co L2.3 edges has been utilized to systematically study Co80Pt20 : WO3 perpendicular magnetic recording thin films, in which the magnetocrystalline anisotropy significantly drops as the oxide volume fraction increases. The microscopic origin of this phenomenon in the studied films can be mainly attributed to an increase in orbital moment normal to the grain–oxide interface, with increasing oxide volume fraction, which arises from a more pronounced effect of symmetry breaking at the grain–oxide interface in smaller grains.
Original languageUndefined
Pages (from-to)405001
Number of pages5
JournalJournal of physics D: applied physics
Volume46
Issue number40
DOIs
Publication statusPublished - 17 Sep 2013

Keywords

  • EWI-24396
  • Condensed matter: electrical
  • IR-89181
  • magnetic and optical Surfaces
  • METIS-302685
  • interfaces and thin films

Cite this

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title = "Microscopic origin of the reduced magnetocrystalline anisotropy with increasing oxide contenct in Co80Pt20:oxide thin films",
abstract = "Angle-dependent x-ray magnetic circular dichroism at the Co L2.3 edges has been utilized to systematically study Co80Pt20 : WO3 perpendicular magnetic recording thin films, in which the magnetocrystalline anisotropy significantly drops as the oxide volume fraction increases. The microscopic origin of this phenomenon in the studied films can be mainly attributed to an increase in orbital moment normal to the grain–oxide interface, with increasing oxide volume fraction, which arises from a more pronounced effect of symmetry breaking at the grain–oxide interface in smaller grains.",
keywords = "EWI-24396, Condensed matter: electrical, IR-89181, magnetic and optical Surfaces, METIS-302685, interfaces and thin films",
author = "W. Zhang and Morton, {Simon A.} and P.K.J. Wong and Bin Lu and Y. Xu and {de Jong}, {Machiel Pieter} and {van der Wiel}, {Wilfred Gerard} and {van der Laan}, Gerrit",
note = "eemcs-eprint-24396",
year = "2013",
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day = "17",
doi = "10.1088/0022-3727/46/40/405001",
language = "Undefined",
volume = "46",
pages = "405001",
journal = "Journal of physics D: applied physics",
issn = "0022-3727",
publisher = "IOP Publishing Ltd.",
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Microscopic origin of the reduced magnetocrystalline anisotropy with increasing oxide contenct in Co80Pt20:oxide thin films. / Zhang, W.; Morton, Simon A.; Wong, P.K.J.; Lu, Bin; Xu, Y.; de Jong, Machiel Pieter; van der Wiel, Wilfred Gerard; van der Laan, Gerrit.

In: Journal of physics D: applied physics, Vol. 46, No. 40, 17.09.2013, p. 405001.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Microscopic origin of the reduced magnetocrystalline anisotropy with increasing oxide contenct in Co80Pt20:oxide thin films

AU - Zhang, W.

AU - Morton, Simon A.

AU - Wong, P.K.J.

AU - Lu, Bin

AU - Xu, Y.

AU - de Jong, Machiel Pieter

AU - van der Wiel, Wilfred Gerard

AU - van der Laan, Gerrit

N1 - eemcs-eprint-24396

PY - 2013/9/17

Y1 - 2013/9/17

N2 - Angle-dependent x-ray magnetic circular dichroism at the Co L2.3 edges has been utilized to systematically study Co80Pt20 : WO3 perpendicular magnetic recording thin films, in which the magnetocrystalline anisotropy significantly drops as the oxide volume fraction increases. The microscopic origin of this phenomenon in the studied films can be mainly attributed to an increase in orbital moment normal to the grain–oxide interface, with increasing oxide volume fraction, which arises from a more pronounced effect of symmetry breaking at the grain–oxide interface in smaller grains.

AB - Angle-dependent x-ray magnetic circular dichroism at the Co L2.3 edges has been utilized to systematically study Co80Pt20 : WO3 perpendicular magnetic recording thin films, in which the magnetocrystalline anisotropy significantly drops as the oxide volume fraction increases. The microscopic origin of this phenomenon in the studied films can be mainly attributed to an increase in orbital moment normal to the grain–oxide interface, with increasing oxide volume fraction, which arises from a more pronounced effect of symmetry breaking at the grain–oxide interface in smaller grains.

KW - EWI-24396

KW - Condensed matter: electrical

KW - IR-89181

KW - magnetic and optical Surfaces

KW - METIS-302685

KW - interfaces and thin films

U2 - 10.1088/0022-3727/46/40/405001

DO - 10.1088/0022-3727/46/40/405001

M3 - Article

VL - 46

SP - 405001

JO - Journal of physics D: applied physics

JF - Journal of physics D: applied physics

SN - 0022-3727

IS - 40

ER -