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Title: Magnetization dynamics in NiFe thin films induced by short in-plane magnetic field pulses

Abstract

The magnetization dynamics in a thin NiFe film was investigated by applying short in-plane magnetic field pulses while probing the response using a time-resolved magneto-optical Kerr effect setup. In-plane magnetic field pulses, with duration shorter than the relaxation of the system, were generated using a photoconductive switch and by subsequent propagation of current pulses along a waveguide. The field pulses with typical rise and decay times of 10{endash}60 and 500{endash}700 ps, respectively, have a maximum field strength of 9 Oe, by which Permalloy elements of 16 nm thickness and lateral dimensions of 10{times}20{mu}m were excited. The observed coherent precession of a ferromagnetic NiFe system had precession frequencies of several GHz and relaxation times on a nanosecond time scale. The dynamic properties observed agree well the Gilberts{close_quote}s precession equation and the static magnetic properties of the elements {copyright} 2001 American Institute of Physics.

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
(US)
OSTI Identifier:
40204149
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 89; Journal Issue: 11; Other Information: DOI: 10.1063/1.1359462; Othernumber: JAPIAU000089000011007648000001; 406111MMM; PBD: 1 Jun 2001; Journal ID: ISSN 0021-8979
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; KERR EFFECT; MAGNETIC FIELDS; MAGNETIC PROPERTIES; MAGNETIZATION; RELAXATION TIME; THIN FILMS

Citation Formats

Gerrits, Th, Hohlfeld, J, Gielkens, O, Veenstra, K J, Bal, K, Rasing, Th, and van den Berg, H. A. M. Magnetization dynamics in NiFe thin films induced by short in-plane magnetic field pulses. United States: N. p., 2001. Web. doi:10.1063/1.1359462.
Gerrits, Th, Hohlfeld, J, Gielkens, O, Veenstra, K J, Bal, K, Rasing, Th, & van den Berg, H. A. M. Magnetization dynamics in NiFe thin films induced by short in-plane magnetic field pulses. United States. https://doi.org/10.1063/1.1359462
Gerrits, Th, Hohlfeld, J, Gielkens, O, Veenstra, K J, Bal, K, Rasing, Th, and van den Berg, H. A. M. 2001. "Magnetization dynamics in NiFe thin films induced by short in-plane magnetic field pulses". United States. https://doi.org/10.1063/1.1359462.
@article{osti_40204149,
title = {Magnetization dynamics in NiFe thin films induced by short in-plane magnetic field pulses},
author = {Gerrits, Th and Hohlfeld, J and Gielkens, O and Veenstra, K J and Bal, K and Rasing, Th and van den Berg, H. A. M.},
abstractNote = {The magnetization dynamics in a thin NiFe film was investigated by applying short in-plane magnetic field pulses while probing the response using a time-resolved magneto-optical Kerr effect setup. In-plane magnetic field pulses, with duration shorter than the relaxation of the system, were generated using a photoconductive switch and by subsequent propagation of current pulses along a waveguide. The field pulses with typical rise and decay times of 10{endash}60 and 500{endash}700 ps, respectively, have a maximum field strength of 9 Oe, by which Permalloy elements of 16 nm thickness and lateral dimensions of 10{times}20{mu}m were excited. The observed coherent precession of a ferromagnetic NiFe system had precession frequencies of several GHz and relaxation times on a nanosecond time scale. The dynamic properties observed agree well the Gilberts{close_quote}s precession equation and the static magnetic properties of the elements {copyright} 2001 American Institute of Physics.},
doi = {10.1063/1.1359462},
url = {https://www.osti.gov/biblio/40204149}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 11,
volume = 89,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2001},
month = {Fri Jun 01 00:00:00 EDT 2001}
}