TY  - JOUR
AU  - Schönhense, G.
AU  - Elmers, H. J.
AU  - Krasyuk, A.
AU  - Wegelin, F.
AU  - Nepijko, S. A.
AU  - Oelsner, A.
AU  - Schneider, C. M.
TI  - Transient spatio-temporal domain patterns in permalloy microstructures induced by fast magnetic field pulses
JO  - Nuclear instruments & methods in physics research / B
VL  - 246
SN  - 0168-583X
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - PreJuSER-57551
SP  - 1 - 12
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - The response of multidomain flux-closure structures (Landau states) in micrometer-scale magnetic thin-film elements upon fast magnetic field pulses leads to the excitation of magnetic eigenmodes and to short-lived domain patterns that do not occur in quasi-static remagnetisation. Such transient spatio-temporal patterns and particular detail features are discussed. Examples are presented for perm-alloy platelets of various shapes and sizes. Dynamic series of domain patterns with variable delay between field pulse and photon pulse (synchrotron radiation) have been taken using stroboscopic XMCD-PEEM. Precessional remagnetisation starts at the domain boundaries. The damped precessional motion propagates into the domains magnetised perpendicular to the field Pulse. Further, an apparent dynamical broadening of domain boundaries, the formation of transient vortices and domain walls as well as the fast formation of blocking patterns are discussed. An important feature is the action of the demagnetising field that develops via the damped precessional motion of the magnetisation on the nanosecond time scale. The effective field is constituted by the sum of the instantaneous external pulse field and the delayed response of the demagnetising field. (c) 2006 Published by Elsevier B.V.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000236950700002
DO  - DOI:10.1016/j,nimb.2005.12.011
UR  - https://juser.fz-juelich.de/record/57551
ER  -