Studies of SmCo5/Fe nanocomposite magnetic bilayers with magnetic soft x-ray transmission microscopy

Journal Article · Fri Dec 04 00:00:00 EST 2009 · Chinese Physics B

OSTI ID:983094

Shahzad, F; Siddiqi, S A; Im, M -Y; Avallone, A; Fischer, P; Hussain, Z; Siddiqi, I; Hellman, F; Zhao, J

A hard/soft SmCo{sub 5}/Fe nanocomposite magnetic bilayer system has been fabricated on X-ray transparent 100-200 nm thin Si{sub 3}N{sub 4} membranes by magnetron sputtering. The microscopic magnetic domain pattern and its behavior during magnetization reversal in the hard and soft magnetic phases have been individually studied by element specific magnetic soft x-ray microscopy at a spatial resolution of better than 25nm. We observe that the domain patterns for soft and hard phases switch coherently throughout the full hysteresis cycle upon applying external magnetic fields. We derived local M(H) curves from the images for Fe and SmCo5 separately and found switching for both hard and soft phases same.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Materials Sciences Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 983094
• Report Number(s): LBNL-3209E; TRN: US201014%%407
• Journal Information: Chinese Physics B, Journal Name: Chinese Physics B
• Country of Publication: United States
• Language: English

Related Subjects

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HYSTERESIS
MAGNETIC FIELDS
MAGNETIZATION
MAGNETRONS
MEMBRANES
MICROSCOPY
SPATIAL RESOLUTION
SPUTTERING