TY  - CONF
AU  - Kovács, A.
AU  - Pradeep, K. G.
AU  - Herzer, G.
AU  - Raabe, D.
AU  - Dunin-Borkowski, Rafal
TI  - Magnetic microstructure in a stress-annealed Fe $_{73.5}$ Si $_{15.5}$ B $_{7}$ Nb $_{3}$ Cu $_{1}$ soft magnetic alloy observed using off-axis electron holography and Lorentz microscopy
JO  - AIP Advances
VL  - 6
IS  - 5
SN  - 2158-3226
CY  - New York, NY
PB  - American Inst. of Physics
M1  - FZJ-2017-01403
SP  - 056501 -
PY  - 2016
AB  - Fe-Si-B-Nb-Cu alloys are attractive for high frequency applications due to their low coercivity and high saturation magnetization. Here, we study the effect of stress annealing on magnetic microstructure in Fe73.5Si15.5B7Nb3Cu1 using off-axis electron holography and the Fresnel mode of Lorentz transmission electron microscopy. A stress of 50 MPa was applied to selected samples during rapid annealing for 4 s, resulting in uniaxial anisotropy perpendicular to the stress direction. The examination of focused ion beam milled lamellae prepared from each sample revealed a random magnetic domain pattern in the sample that had been rapidly annealed in the absence of stress, whereas a highly regular domain pattern was observed in the stress-annealed sample. We also measured a decrease in domain wall width from ∼ 94 nm in the sample annealed without stress to ∼ 80 nm in the stress-annealed sample.
T2  - 2016 Joint MMM-Intermag Conference
CY  - 11 Jan 2016 - 15 Jan 2016, San Diego (CA)
Y2  - 11 Jan 2016 - 15 Jan 2016
M2  - San Diego, CA
LB  - PUB:(DE-HGF)16 ; PUB:(DE-HGF)8
UR  - <Go to ISI:>//WOS:000377962500267
DO  - DOI:10.1063/1.4942954
UR  - https://juser.fz-juelich.de/record/827205
ER  -