Perpendicular magnetic anisotropy in ultrathin Co | Ni multilayer films studied with ferromagnetic resonance and magnetic x-ray microspectroscopy

F. MacIà; P. Warnicke; D. Bedau; M. Y. Im; P. Fischer; D. A. Arena; A. D. Kent

doi:10.1016/j.jmmm.2012.03.063

Perpendicular magnetic anisotropy in ultrathin Co | Ni multilayer films studied with ferromagnetic resonance and magnetic x-ray microspectroscopy

F. MacIà, P. Warnicke, D. Bedau, M. Y. Im, P. Fischer, D. A. Arena, A. D. Kent

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

Abstract

Ferromagnetic resonance (FMR) spectroscopy, x-ray magnetic circular dichroism (XMCD) spectroscopy and magnetic transmission soft x-ray microscopy (MTXM) experiments have been performed to gain insight into the magnetic anisotropy and domain structure of ultrathin Co|Ni multilayer films with a thin permalloy layer underneath. MTXM images with a spatial resolution better than 25 nm were obtained at the Co L ₃ edge down to an equivalent thickness of Co of only 1 nm, which establishes a new lower boundary on the sensitivity limit of MTXM. Domain sizes are shown to be strong functions of the anisotropy and thickness of the film.

Original language	English (US)
Pages (from-to)	3629-3632
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	324
Issue number	22
DOIs	https://doi.org/10.1016/j.jmmm.2012.03.063
State	Published - Nov 2012

Keywords

Domain imaging
Ferromagnetic resonance (FMR)
Perpendicular magnetic anisotropy
X-ray magnetic circular dichorism
X-ray microscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2012.03.063

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title = "Perpendicular magnetic anisotropy in ultrathin Co | Ni multilayer films studied with ferromagnetic resonance and magnetic x-ray microspectroscopy",

abstract = "Ferromagnetic resonance (FMR) spectroscopy, x-ray magnetic circular dichroism (XMCD) spectroscopy and magnetic transmission soft x-ray microscopy (MTXM) experiments have been performed to gain insight into the magnetic anisotropy and domain structure of ultrathin Co|Ni multilayer films with a thin permalloy layer underneath. MTXM images with a spatial resolution better than 25 nm were obtained at the Co L 3 edge down to an equivalent thickness of Co of only 1 nm, which establishes a new lower boundary on the sensitivity limit of MTXM. Domain sizes are shown to be strong functions of the anisotropy and thickness of the film.",

keywords = "Domain imaging, Ferromagnetic resonance (FMR), Perpendicular magnetic anisotropy, X-ray magnetic circular dichorism, X-ray microscopy",

author = "F. MacI{\`a} and P. Warnicke and D. Bedau and Im, {M. Y.} and P. Fischer and Arena, {D. A.} and Kent, {A. D.}",

note = "Funding Information: F.M. thanks support from Marie Curie IOF 253214 and from a Beatriu de Pini{\'o}s from Catalan Government. Supported in part by ARO-MURI , Grant no. W911NF-08-1-0317 . The operation of the microscope is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy under Contract no. DE-AC02-05-CH11231 . Device fabrication was partly carried out at the Cornell Nanofabrication Facility.",

year = "2012",

month = nov,

doi = "10.1016/j.jmmm.2012.03.063",

language = "English (US)",

volume = "324",

pages = "3629--3632",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "22",

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TY - JOUR

T1 - Perpendicular magnetic anisotropy in ultrathin Co | Ni multilayer films studied with ferromagnetic resonance and magnetic x-ray microspectroscopy

AU - MacIà, F.

AU - Warnicke, P.

AU - Bedau, D.

AU - Im, M. Y.

AU - Fischer, P.

AU - Arena, D. A.

AU - Kent, A. D.

N1 - Funding Information: F.M. thanks support from Marie Curie IOF 253214 and from a Beatriu de Piniós from Catalan Government. Supported in part by ARO-MURI , Grant no. W911NF-08-1-0317 . The operation of the microscope is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy under Contract no. DE-AC02-05-CH11231 . Device fabrication was partly carried out at the Cornell Nanofabrication Facility.

PY - 2012/11

Y1 - 2012/11

N2 - Ferromagnetic resonance (FMR) spectroscopy, x-ray magnetic circular dichroism (XMCD) spectroscopy and magnetic transmission soft x-ray microscopy (MTXM) experiments have been performed to gain insight into the magnetic anisotropy and domain structure of ultrathin Co|Ni multilayer films with a thin permalloy layer underneath. MTXM images with a spatial resolution better than 25 nm were obtained at the Co L 3 edge down to an equivalent thickness of Co of only 1 nm, which establishes a new lower boundary on the sensitivity limit of MTXM. Domain sizes are shown to be strong functions of the anisotropy and thickness of the film.

AB - Ferromagnetic resonance (FMR) spectroscopy, x-ray magnetic circular dichroism (XMCD) spectroscopy and magnetic transmission soft x-ray microscopy (MTXM) experiments have been performed to gain insight into the magnetic anisotropy and domain structure of ultrathin Co|Ni multilayer films with a thin permalloy layer underneath. MTXM images with a spatial resolution better than 25 nm were obtained at the Co L 3 edge down to an equivalent thickness of Co of only 1 nm, which establishes a new lower boundary on the sensitivity limit of MTXM. Domain sizes are shown to be strong functions of the anisotropy and thickness of the film.

KW - Domain imaging

KW - Ferromagnetic resonance (FMR)

KW - Perpendicular magnetic anisotropy

KW - X-ray magnetic circular dichorism

KW - X-ray microscopy

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

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Perpendicular magnetic anisotropy in ultrathin Co | Ni multilayer films studied with ferromagnetic resonance and magnetic x-ray microspectroscopy

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Keywords

ASJC Scopus subject areas

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