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Title: Microscopic return point memory in Co/Pd multilayer films

Abstract

We report soft x-ray speckle metrology measurements of microscopic return point and complementary point memory in Co/Pd magnetic films having perpendicular anisotropy. We observe that the domains assemble into a common labyrinth phase with a period that varies by nearly a factor of two between initial reversal and fields near saturation. Unlike previous studies of similar systems, the ability of the film to reproduce its domain structure after magnetic cycling through saturation varies from loop to loop, from position to position on the sample, and with the part of the speckle pattern used in the metrology measurements. We report the distribution of memory as a function of field and discuss these results in terms of the reversal process.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Advanced Light Source Division
OSTI Identifier:
982832
Report Number(s):
LBNL-2752E
TRN: US201014%%83
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
New Journal Of Physics
Additional Journal Information:
Journal Name: New Journal Of Physics
Country of Publication:
United States
Language:
English
Subject:
75; 36; ANISOTROPY; DISTRIBUTION; DOMAIN STRUCTURE; SATURATION; X-ray scattering (including small-angle scattering),Magnetic properties of thin films, surfaces, and interfaces,Domain structure (including magnetic bubbles)

Citation Formats

Seu, K A, Su, R, Roy, S, Parks, D, Shipton, E, Fullerton, E E, and Kevan, S D. Microscopic return point memory in Co/Pd multilayer films. United States: N. p., 2009. Web.
Seu, K A, Su, R, Roy, S, Parks, D, Shipton, E, Fullerton, E E, & Kevan, S D. Microscopic return point memory in Co/Pd multilayer films. United States.
Seu, K A, Su, R, Roy, S, Parks, D, Shipton, E, Fullerton, E E, and Kevan, S D. 2009. "Microscopic return point memory in Co/Pd multilayer films". United States. https://www.osti.gov/servlets/purl/982832.
@article{osti_982832,
title = {Microscopic return point memory in Co/Pd multilayer films},
author = {Seu, K A and Su, R and Roy, S and Parks, D and Shipton, E and Fullerton, E E and Kevan, S D},
abstractNote = {We report soft x-ray speckle metrology measurements of microscopic return point and complementary point memory in Co/Pd magnetic films having perpendicular anisotropy. We observe that the domains assemble into a common labyrinth phase with a period that varies by nearly a factor of two between initial reversal and fields near saturation. Unlike previous studies of similar systems, the ability of the film to reproduce its domain structure after magnetic cycling through saturation varies from loop to loop, from position to position on the sample, and with the part of the speckle pattern used in the metrology measurements. We report the distribution of memory as a function of field and discuss these results in terms of the reversal process.},
doi = {},
url = {https://www.osti.gov/biblio/982832}, journal = {New Journal Of Physics},
number = ,
volume = ,
place = {United States},
year = {Thu Oct 01 00:00:00 EDT 2009},
month = {Thu Oct 01 00:00:00 EDT 2009}
}