Size dependence of magnetization reversal of ring shaped magnetic tunnel junction

C. C. Chen; C. Y. Kuo; Y. C. Chang; C. C. Chang; Lance Horng; Teho Wu; G. Chern; C. Y. Huang; M. Tsunoda; M. Takahashi; J. C. Wu

doi:10.1016/j.jmmm.2006.10.686

Size dependence of magnetization reversal of ring shaped magnetic tunnel junction

C. C. Chen, C. Y. Kuo, Y. C. Chang, C. C. Chang, Lance Horng, Teho Wu, G. Chern, C. Y. Huang, M. Tsunoda, M. Takahashi, J. C. Wu

Department of Physics

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

6 Citations (Scopus)

Abstract

The size dependence of magnetization reversal of magnetic tunnel junction (MTJ) rings has been investigated. The MTJ rings, with outer diameter of 4, 2 and 1 μm and inner diameter of 1.5, 1 and 0.5 μm were fabricated by a top-down technique. The magnetoresistance curves manifest all of the magnetic domain configurations during magnetization reversal in different sized rings. Various transition processes were observed, such as four transition, three transition and two transition in the largest, middle and smallest MTJ ring, respectively. Furthermore, the biasing fields observed from major loops decrease with decreasing size, which may result from edge roughness produced in the ion-milling process.

Original language	English
Pages (from-to)	1900-1902
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 3
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.686
Publication status	Published - 2007 Mar 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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@article{0f05b8ed48d4420d8de27fdd039f0ab0,

title = "Size dependence of magnetization reversal of ring shaped magnetic tunnel junction",

abstract = "The size dependence of magnetization reversal of magnetic tunnel junction (MTJ) rings has been investigated. The MTJ rings, with outer diameter of 4, 2 and 1 μm and inner diameter of 1.5, 1 and 0.5 μm were fabricated by a top-down technique. The magnetoresistance curves manifest all of the magnetic domain configurations during magnetization reversal in different sized rings. Various transition processes were observed, such as four transition, three transition and two transition in the largest, middle and smallest MTJ ring, respectively. Furthermore, the biasing fields observed from major loops decrease with decreasing size, which may result from edge roughness produced in the ion-milling process.",

author = "Chen, {C. C.} and Kuo, {C. Y.} and Chang, {Y. C.} and Chang, {C. C.} and Lance Horng and Teho Wu and G. Chern and Huang, {C. Y.} and M. Tsunoda and M. Takahashi and Wu, {J. C.}",

year = "2007",

month = mar,

day = "1",

doi = "10.1016/j.jmmm.2006.10.686",

language = "English",

volume = "310",

pages = "1900--1902",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "2 SUPPL. PART 3",

}

Size dependence of magnetization reversal of ring shaped magnetic tunnel junction. / Chen, C. C.; Kuo, C. Y.; Chang, Y. C.; Chang, C. C.; Horng, Lance; Wu, Teho; Chern, G.; Huang, C. Y.; Tsunoda, M.; Takahashi, M.; Wu, J. C.

In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 3, 01.03.2007, p. 1900-1902.

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

TY - JOUR

T1 - Size dependence of magnetization reversal of ring shaped magnetic tunnel junction

AU - Chen, C. C.

AU - Kuo, C. Y.

AU - Chang, Y. C.

AU - Chang, C. C.

AU - Horng, Lance

AU - Wu, Teho

AU - Chern, G.

AU - Huang, C. Y.

AU - Tsunoda, M.

AU - Takahashi, M.

AU - Wu, J. C.

PY - 2007/3/1

Y1 - 2007/3/1

N2 - The size dependence of magnetization reversal of magnetic tunnel junction (MTJ) rings has been investigated. The MTJ rings, with outer diameter of 4, 2 and 1 μm and inner diameter of 1.5, 1 and 0.5 μm were fabricated by a top-down technique. The magnetoresistance curves manifest all of the magnetic domain configurations during magnetization reversal in different sized rings. Various transition processes were observed, such as four transition, three transition and two transition in the largest, middle and smallest MTJ ring, respectively. Furthermore, the biasing fields observed from major loops decrease with decreasing size, which may result from edge roughness produced in the ion-milling process.

AB - The size dependence of magnetization reversal of magnetic tunnel junction (MTJ) rings has been investigated. The MTJ rings, with outer diameter of 4, 2 and 1 μm and inner diameter of 1.5, 1 and 0.5 μm were fabricated by a top-down technique. The magnetoresistance curves manifest all of the magnetic domain configurations during magnetization reversal in different sized rings. Various transition processes were observed, such as four transition, three transition and two transition in the largest, middle and smallest MTJ ring, respectively. Furthermore, the biasing fields observed from major loops decrease with decreasing size, which may result from edge roughness produced in the ion-milling process.

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