Soft x-ray ptychography studies of nanoscale magnetic and structural correlations in thin SmCo5 films

Shi, X.; Fischer, P.; Neu, V.; Elefant, D.; Lee, J. C. T.; Shapiro, D. A.; Farmand, M.; Tyliszczak, T.; Shiu, H. -W.; Marchesini, S.; Roy, S.; Kevan, S. D.

doi:10.1063/1.4942776

Title: Soft x-ray ptychography studies of nanoscale magnetic and structural correlations in thin SmCo₅ films

Journal Article · Wed Mar 02 00:00:00 EST 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4942776· OSTI ID:1525133

Shi, X. ^[1]; Fischer, P. ^[2]; Neu, V. ^[3];

^[3]; Lee, J. C. T. ^[1]; Shapiro, D. A. ^[4]; Farmand, M. ^[4]; Tyliszczak, T. ^[4]; Shiu, H. -W. ^[5]; Marchesini, S. ^[4]; Roy, S. ^[4];

^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Oregon, Eugene, OR (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Santa Cruz, CA (United States)
IFW Dresden, Dresden (Germany)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); National Synchrotron Radiation Research Center (NSRRC), Hsinchu (Taiwan)

High spatial resolution magnetic x-ray spectromicroscopy at x-ray photon energies near the cobalt L₃ resonance was applied to probe an amorphous 50 nm thin SmCo₅ film prepared by off-axis pulsed laser deposition onto an x-ray transparent 200 nm thin Si₃N₄ membrane. Alternating gradient magnetometry shows a strong in-plane anisotropy and an only weak perpendicular magnetic anisotropy, which is confirmed by magnetic transmission soft x-ray microscopy images showing over a field of view of 10 μm a primarily stripe-like domain pattern but with local labyrinth-like domains. Soft x-ray ptychography in amplitude and phase contrast was used to identify and characterize local magnetic and structural features over a field of view of 1 μm with a spatial resolution of about 10 nm. There, the magnetic labyrinth domain patterns are accompanied by nanoscale structural inclusions that are primarily located in close proximity to the magnetic domain walls. In conclusion, our analysis suggests that these inclusions are nanocrystalline Sm₂Co₁₇ phases with nominally in-plane magnetic anisotropy.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC02-05CH11231; FG02-11ER46831; AC02-05-CH11231

OSTI ID:: 1525133

Alternate ID(s):: OSTI ID: 1240034

Journal Information:: Applied Physics Letters, Vol. 108, Issue 9; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 42 works

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FIG. 1.(p. 4)

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