Lorentz TEM imaging of stripe structures embedded in a soft magnetic matrix

Autor:	Basith, M. A., McVitie, S., Strache, T., Fritzsche, M., Muecklich, A., Fassbender, J., McCordy, J.
Rok vydání:	2015
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. Applied 4, 034012 (2015)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevApplied.4.034012
Popis:	N\'eel walls in soft magnetic NiFe/NiFeGa hybrid stripe structures surrounded by a NiFe film are investigated by high resolution Lorentz transmission electron microscopic imaging. An anti-parallel orientation of magnetization in 1000 nm wide neighboring unirradiated-irradiated stripes is observed by forming high angle domain walls during magnetization reversal. Upon downscaling the stripe structure size from 1000 nm to 200 nm a transition from a discrete domain pattern to an effective magnetic medium is observed for external magnetic field reversal. This transition is associated with vanishing ability of hosting high angle domain walls between adjacent stripes. The investigation also demonstrated the potentiality of Lorentz microscopy to image periodic stripe structures well under micron length-scale. Comment: 7 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1507.07313 Zobrazit plný text záznamu View this record from Arxiv