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

Abstract

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.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Materials Sciences Division
OSTI Identifier:
983094
Report Number(s):
LBNL-3209E
TRN: US201014%%407
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Chinese Physics B
Additional Journal Information:
Journal Name: Chinese Physics B
Country of Publication:
United States
Language:
English
Subject:
36; HYSTERESIS; MAGNETIC FIELDS; MAGNETIZATION; MAGNETRONS; MEMBRANES; MICROSCOPY; SPATIAL RESOLUTION; SPUTTERING

Citation Formats

Shahzad, F, Siddiqi, S A, Im, M -Y, Avallone, A, Fischer, P, Hussain, Z, Siddiqi, I, Hellman, F, and Zhao, J. Studies of SmCo5/Fe nanocomposite magnetic bilayers with magnetic soft x-ray transmission microscopy. United States: N. p., 2009. Web.
Shahzad, F, Siddiqi, S A, Im, M -Y, Avallone, A, Fischer, P, Hussain, Z, Siddiqi, I, Hellman, F, & Zhao, J. Studies of SmCo5/Fe nanocomposite magnetic bilayers with magnetic soft x-ray transmission microscopy. United States.
Shahzad, F, Siddiqi, S A, Im, M -Y, Avallone, A, Fischer, P, Hussain, Z, Siddiqi, I, Hellman, F, and Zhao, J. 2009. "Studies of SmCo5/Fe nanocomposite magnetic bilayers with magnetic soft x-ray transmission microscopy". United States. https://www.osti.gov/servlets/purl/983094.
@article{osti_983094,
title = {Studies of SmCo5/Fe nanocomposite magnetic bilayers with magnetic soft x-ray transmission microscopy},
author = {Shahzad, F and Siddiqi, S A and Im, M -Y and Avallone, A and Fischer, P and Hussain, Z and Siddiqi, I and Hellman, F and Zhao, J},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/983094}, journal = {Chinese Physics B},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 04 00:00:00 EST 2009},
month = {Fri Dec 04 00:00:00 EST 2009}
}