Ferromagnetic Co-C nanodot arrays produced by direct interferometric laser annealing

M. Zheng, M. Yu, Y. Liu, R. Skomski, Sy-Hwang Liou, David J Sellmyer, V. N. Petryakov, Yu K. Verevkin, N. I. Polushkin, N. N. Salashchenko

Research output: Contribution to journalConference article

10 Citations (Scopus)

Abstract

Magnetic properties of Co-C nanodot arrays produced by direct interferometric laser annealing are investigated by magnetic force microscopy (MFM) and magnetization measurements. The dots are formed by locally annealing sputtered amorphous Co-C films in regions where the laser intensity is highest. As-sputtered Co-C films do not exhibit ferromagnetic order at room temperature, but MFM shows that the dots become magnetic upon annealing, possibly due to the agglomeration or phase separation of Co-rich clusters. The dots are embedded in either a paramagnetic or weakly magnetic matrix. The magnetic properties of the generated pattern can be changed by varying the laser power. The present results show that direct interferometric lithography may become a useful tool for fabricating future patterned magnetic nanostructures.

Original languageEnglish (US)
Pages (from-to)2070-2072
Number of pages3
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
StatePublished - Jul 1 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: Jan 7 2001Jan 11 2001

Fingerprint

laser annealing
magnetic force microscopy
Magnetic force microscopy
Annealing
magnetic properties
annealing
Lasers
Magnetic properties
agglomeration
high power lasers
lithography
Phase separation
magnetization
Lithography
Nanostructures
Magnetization
room temperature
Agglomeration
matrices
lasers

Keywords

  • Artificially structured materials - small particles and patterned films
  • Magnetic domains

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Ferromagnetic Co-C nanodot arrays produced by direct interferometric laser annealing. / Zheng, M.; Yu, M.; Liu, Y.; Skomski, R.; Liou, Sy-Hwang; Sellmyer, David J; Petryakov, V. N.; Verevkin, Yu K.; Polushkin, N. I.; Salashchenko, N. N.

In: IEEE Transactions on Magnetics, Vol. 37, No. 4 I, 01.07.2001, p. 2070-2072.

Research output: Contribution to journalConference article

Zheng, M, Yu, M, Liu, Y, Skomski, R, Liou, S-H, Sellmyer, DJ, Petryakov, VN, Verevkin, YK, Polushkin, NI & Salashchenko, NN 2001, 'Ferromagnetic Co-C nanodot arrays produced by direct interferometric laser annealing', IEEE Transactions on Magnetics, vol. 37, no. 4 I, pp. 2070-2072. https://doi.org/10.1109/20.951056
Zheng, M. ; Yu, M. ; Liu, Y. ; Skomski, R. ; Liou, Sy-Hwang ; Sellmyer, David J ; Petryakov, V. N. ; Verevkin, Yu K. ; Polushkin, N. I. ; Salashchenko, N. N. / Ferromagnetic Co-C nanodot arrays produced by direct interferometric laser annealing. In: IEEE Transactions on Magnetics. 2001 ; Vol. 37, No. 4 I. pp. 2070-2072.
@article{e13941634c3248af8f9f3f2f3634e6b1,
title = "Ferromagnetic Co-C nanodot arrays produced by direct interferometric laser annealing",
abstract = "Magnetic properties of Co-C nanodot arrays produced by direct interferometric laser annealing are investigated by magnetic force microscopy (MFM) and magnetization measurements. The dots are formed by locally annealing sputtered amorphous Co-C films in regions where the laser intensity is highest. As-sputtered Co-C films do not exhibit ferromagnetic order at room temperature, but MFM shows that the dots become magnetic upon annealing, possibly due to the agglomeration or phase separation of Co-rich clusters. The dots are embedded in either a paramagnetic or weakly magnetic matrix. The magnetic properties of the generated pattern can be changed by varying the laser power. The present results show that direct interferometric lithography may become a useful tool for fabricating future patterned magnetic nanostructures.",
keywords = "Artificially structured materials - small particles and patterned films, Magnetic domains",
author = "M. Zheng and M. Yu and Y. Liu and R. Skomski and Sy-Hwang Liou and Sellmyer, {David J} and Petryakov, {V. N.} and Verevkin, {Yu K.} and Polushkin, {N. I.} and Salashchenko, {N. N.}",
year = "2001",
month = "7",
day = "1",
doi = "10.1109/20.951056",
language = "English (US)",
volume = "37",
pages = "2070--2072",
journal = "IEEE Transactions on Magnetics",
issn = "0018-9464",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "4 I",

}

TY - JOUR

T1 - Ferromagnetic Co-C nanodot arrays produced by direct interferometric laser annealing

AU - Zheng, M.

AU - Yu, M.

AU - Liu, Y.

AU - Skomski, R.

AU - Liou, Sy-Hwang

AU - Sellmyer, David J

AU - Petryakov, V. N.

AU - Verevkin, Yu K.

AU - Polushkin, N. I.

AU - Salashchenko, N. N.

PY - 2001/7/1

Y1 - 2001/7/1

N2 - Magnetic properties of Co-C nanodot arrays produced by direct interferometric laser annealing are investigated by magnetic force microscopy (MFM) and magnetization measurements. The dots are formed by locally annealing sputtered amorphous Co-C films in regions where the laser intensity is highest. As-sputtered Co-C films do not exhibit ferromagnetic order at room temperature, but MFM shows that the dots become magnetic upon annealing, possibly due to the agglomeration or phase separation of Co-rich clusters. The dots are embedded in either a paramagnetic or weakly magnetic matrix. The magnetic properties of the generated pattern can be changed by varying the laser power. The present results show that direct interferometric lithography may become a useful tool for fabricating future patterned magnetic nanostructures.

AB - Magnetic properties of Co-C nanodot arrays produced by direct interferometric laser annealing are investigated by magnetic force microscopy (MFM) and magnetization measurements. The dots are formed by locally annealing sputtered amorphous Co-C films in regions where the laser intensity is highest. As-sputtered Co-C films do not exhibit ferromagnetic order at room temperature, but MFM shows that the dots become magnetic upon annealing, possibly due to the agglomeration or phase separation of Co-rich clusters. The dots are embedded in either a paramagnetic or weakly magnetic matrix. The magnetic properties of the generated pattern can be changed by varying the laser power. The present results show that direct interferometric lithography may become a useful tool for fabricating future patterned magnetic nanostructures.

KW - Artificially structured materials - small particles and patterned films

KW - Magnetic domains

UR - http://www.scopus.com/inward/record.url?scp=0035386002&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035386002&partnerID=8YFLogxK

U2 - 10.1109/20.951056

DO - 10.1109/20.951056

M3 - Conference article

AN - SCOPUS:0035386002

VL - 37

SP - 2070

EP - 2072

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 4 I

ER -