抄録
Temporal evolution of magnetization in a field cooling process from magnetic ordering temperature has been numerically investigated for magnetic nanodots with perpendicular anisotropy by solving the stochastic Landau-Lifshitz-Gilbert equation. The magnetic field required to align the magnetization, i.e. the switching field for thermally assisted writing of magnetic dot, depends on not only the intrinsic anisotropy field but also the magnetization reversal mechanism. To minimize the switching field with ensuring a practical thermal stability of the dot for nonvolatile memory applications, the lateral dimension of the dot should be smaller than its critical size for single domain configuration to avoid a formation of flux closure configuration inside the dot.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 2683-2685 |
| ページ数 | 3 |
| ジャーナル | Journal of Magnetism and Magnetic Materials |
| 巻 | 310 |
| 発行部数 | 2 SUPPL. PART 3 |
| DOI | |
| 出版物ステータス | Published - 2007 3 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
これを引用
Micromagnetic simulation of thermally assisted magnetization reversal in magnetic nanodots with perpendicular anisotropy. / Purnama, Budi; Nozaki, Yukio; Matsuyama, Kimihide.
：: Journal of Magnetism and Magnetic Materials, 巻 310, 番号 2 SUPPL. PART 3, 03.2007, p. 2683-2685.研究成果: Article
}
TY - JOUR
T1 - Micromagnetic simulation of thermally assisted magnetization reversal in magnetic nanodots with perpendicular anisotropy
AU - Purnama, Budi
AU - Nozaki, Yukio
AU - Matsuyama, Kimihide
PY - 2007/3
Y1 - 2007/3
N2 - Temporal evolution of magnetization in a field cooling process from magnetic ordering temperature has been numerically investigated for magnetic nanodots with perpendicular anisotropy by solving the stochastic Landau-Lifshitz-Gilbert equation. The magnetic field required to align the magnetization, i.e. the switching field for thermally assisted writing of magnetic dot, depends on not only the intrinsic anisotropy field but also the magnetization reversal mechanism. To minimize the switching field with ensuring a practical thermal stability of the dot for nonvolatile memory applications, the lateral dimension of the dot should be smaller than its critical size for single domain configuration to avoid a formation of flux closure configuration inside the dot.
AB - Temporal evolution of magnetization in a field cooling process from magnetic ordering temperature has been numerically investigated for magnetic nanodots with perpendicular anisotropy by solving the stochastic Landau-Lifshitz-Gilbert equation. The magnetic field required to align the magnetization, i.e. the switching field for thermally assisted writing of magnetic dot, depends on not only the intrinsic anisotropy field but also the magnetization reversal mechanism. To minimize the switching field with ensuring a practical thermal stability of the dot for nonvolatile memory applications, the lateral dimension of the dot should be smaller than its critical size for single domain configuration to avoid a formation of flux closure configuration inside the dot.
KW - Magnetization reversal
KW - Nanodot magnetic
KW - Numerical simulation
KW - Perpendicular anisotropy
KW - Thermally assisted
UR - http://www.scopus.com/inward/record.url?scp=33847673947&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847673947&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2006.10.988
DO - 10.1016/j.jmmm.2006.10.988
M3 - Article
AN - SCOPUS:33847673947
VL - 310
SP - 2683
EP - 2685
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 2 SUPPL. PART 3
ER -