Magnetic properties of various thick Co-Fe circular dot arrays

Yasushi Endo; Yusuke Niimi; Ryoichi Nakatani; Yoshio Kawamura; Masahiko Yamamoto

doi:10.4028/3-908451-31-0.879

Magnetic properties of various thick Co-Fe circular dot arrays

Yasushi Endo, Yusuke Niimi, Ryoichi Nakatani, Yoshio Kawamura, Masahiko Yamamoto

ENG - Electrical Engineering

Osaka University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We have studied the magnetic properties of Co-Fe circular dot arrays with various thicknesses and diameters in order to determine the optimum thickness and diameter of these dot arrays with a single-domain state for the transmission of spin information. For the thickness of 10 nm, the magnetic state changes from a multi-domain state to a closure-domain state and further to a single-domain state with decreasing diameter. On the other hand, for the thickness of 30 nm and 50 nm, all magnetic states are in a vortex state, regardless of the diameter. From these results, it is found that the optimum thickness and diameter of Co-Fe circular dots with a single-domain state are, respectively, 10 nm and less than 100 nm.

Original language	English
Title of host publication	Advances in Nanomaterials and Processing - IUMRS - ICA - 2006 International Conference in Asia
Publisher	Trans Tech Publications Ltd
Pages	879-882
Number of pages	4
Edition	PART 1
ISBN (Print)	3908451310, 9783908451310
DOIs	https://doi.org/10.4028/3-908451-31-0.879
Publication status	Published - 2007
Event	IUMRS International Conference in Asia 2006, IUMRS-ICA 2006 - Jeju, Korea, Republic of Duration: 2006 Sept 10 → 2006 Sept 14

Publication series

Name	Solid State Phenomena
Number	PART 1
Volume	124-126
ISSN (Print)	1012-0394

Conference

Conference	IUMRS International Conference in Asia 2006, IUMRS-ICA 2006
Country/Territory	Korea, Republic of
City	Jeju
Period	06/9/10 → 06/9/14

Keywords

Co-Fe
Magnetic domain
Magnetism
Spin information

Access to Document

10.4028/3-908451-31-0.879

Cite this

Endo, Y., Niimi, Y., Nakatani, R., Kawamura, Y., & Yamamoto, M. (2007). Magnetic properties of various thick Co-Fe circular dot arrays. In Advances in Nanomaterials and Processing - IUMRS - ICA - 2006 International Conference in Asia (PART 1 ed., pp. 879-882). (Solid State Phenomena; Vol. 124-126, No. PART 1). Trans Tech Publications Ltd. https://doi.org/10.4028/3-908451-31-0.879

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title = "Magnetic properties of various thick Co-Fe circular dot arrays",

abstract = "We have studied the magnetic properties of Co-Fe circular dot arrays with various thicknesses and diameters in order to determine the optimum thickness and diameter of these dot arrays with a single-domain state for the transmission of spin information. For the thickness of 10 nm, the magnetic state changes from a multi-domain state to a closure-domain state and further to a single-domain state with decreasing diameter. On the other hand, for the thickness of 30 nm and 50 nm, all magnetic states are in a vortex state, regardless of the diameter. From these results, it is found that the optimum thickness and diameter of Co-Fe circular dots with a single-domain state are, respectively, 10 nm and less than 100 nm.",

keywords = "Co-Fe, Magnetic domain, Magnetism, Spin information",

author = "Yasushi Endo and Yusuke Niimi and Ryoichi Nakatani and Yoshio Kawamura and Masahiko Yamamoto",

year = "2007",

doi = "10.4028/3-908451-31-0.879",

language = "English",

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series = "Solid State Phenomena",

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Endo, Y, Niimi, Y, Nakatani, R, Kawamura, Y & Yamamoto, M 2007, Magnetic properties of various thick Co-Fe circular dot arrays. in Advances in Nanomaterials and Processing - IUMRS - ICA - 2006 International Conference in Asia. PART 1 edn, Solid State Phenomena, no. PART 1, vol. 124-126, Trans Tech Publications Ltd, pp. 879-882, IUMRS International Conference in Asia 2006, IUMRS-ICA 2006, Jeju, Korea, Republic of, 06/9/10. https://doi.org/10.4028/3-908451-31-0.879

Magnetic properties of various thick Co-Fe circular dot arrays. / Endo, Yasushi; Niimi, Yusuke; Nakatani, Ryoichi et al.
Advances in Nanomaterials and Processing - IUMRS - ICA - 2006 International Conference in Asia. PART 1. ed. Trans Tech Publications Ltd, 2007. p. 879-882 (Solid State Phenomena; Vol. 124-126, No. PART 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Magnetic properties of various thick Co-Fe circular dot arrays

AU - Endo, Yasushi

AU - Niimi, Yusuke

AU - Nakatani, Ryoichi

AU - Kawamura, Yoshio

AU - Yamamoto, Masahiko

PY - 2007

Y1 - 2007

N2 - We have studied the magnetic properties of Co-Fe circular dot arrays with various thicknesses and diameters in order to determine the optimum thickness and diameter of these dot arrays with a single-domain state for the transmission of spin information. For the thickness of 10 nm, the magnetic state changes from a multi-domain state to a closure-domain state and further to a single-domain state with decreasing diameter. On the other hand, for the thickness of 30 nm and 50 nm, all magnetic states are in a vortex state, regardless of the diameter. From these results, it is found that the optimum thickness and diameter of Co-Fe circular dots with a single-domain state are, respectively, 10 nm and less than 100 nm.

AB - We have studied the magnetic properties of Co-Fe circular dot arrays with various thicknesses and diameters in order to determine the optimum thickness and diameter of these dot arrays with a single-domain state for the transmission of spin information. For the thickness of 10 nm, the magnetic state changes from a multi-domain state to a closure-domain state and further to a single-domain state with decreasing diameter. On the other hand, for the thickness of 30 nm and 50 nm, all magnetic states are in a vortex state, regardless of the diameter. From these results, it is found that the optimum thickness and diameter of Co-Fe circular dots with a single-domain state are, respectively, 10 nm and less than 100 nm.

KW - Co-Fe

KW - Magnetic domain

KW - Magnetism

KW - Spin information

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ER -

Magnetic properties of various thick Co-Fe circular dot arrays

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