Ultrafast microscopy and numerical simulation study of magnetization reversal dynamics in permalloy

被引：14

作者：

Ballentine, GE ^{[1
]}

Hiebert, WK ^{[1
]}

Stankiewicz, A ^{[1
]}

Freeman, MR ^{[1
]}

机构：

[1] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 09期

关键词：

D O I：

10.1063/1.372856

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have measured and simulated dynamics of magnetization reversal in a micrometer scale Ni80Fe20 polycrystalline thin film element in the time domain. The sample is probed experimentally using time-resolved scanning Kerr microscopy. This allows for spatially resolved images of the dynamical magnetization states. We have simulated these magnetic reversals micromagnetically for the case of an ideal rectangular element. The reversal rates agree semiqualitatively, and gross spatial features such as a stripe instability in the directions perpendicular to the applied field are reproduced. (C) 2000 American Institute of Physics. [S0021-8979(00)81408-5].

引用

页码：6830 / 6832

页数：3

共 5 条

[1] BRANKIN RW, 1992, 92S1 SO METHODIST U
[2] Ultrafast magneto-optic sampling of picosecond current pulses
Elezzabi, AY
Freeman, MR
[J]. APPLIED PHYSICS LETTERS, 1996, 68 (25) : 3546 - 3548
[3] Direct observation of magnetic relaxation in a small permalloy disk by time-resolved scanning Kerr microscopy
Hiebert, WK
Stankiewicz, A
Freeman, MR
[J]. PHYSICAL REVIEW LETTERS, 1997, 79 (06) : 1134 - 1137
[4] MAGNETIZATION REVERSAL DYNAMICS IN THE MEDIA OF MAGNETO-OPTICAL RECORDING
MANSURIPUR, M
[J]. JOURNAL OF APPLIED PHYSICS, 1988, 63 (12) : 5809 - 5823
[5] Dynamics of magnetization reversal in a 20x4 μm permalloy microstructure
Stankiewicz, A
Hiebert, WK
Ballentine, GE
Marsh, KW
Freeman, MR
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (04) : 1003 - 1005

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