Magnetic imaging of ion-irradiation patterned Co/Pt multilayers using complementary electron and photon probes

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The three-dimensional magnetic structure and reversal mechanism of patterned Co/Pt multilayers, were imaged using complementary Lorentz transmission electron microscopy (LTEM) (in-plane component) and magnetic transmission x-ray microscopy (M-TXM) (perpendicular magnetization). The Co/Pt films with perpendicular anisotropy were patterned by ion irradiation through a stencil mask to produce in-plane magnetization in the irradiated regions. The boundaries of the patterns, defined by the transition from out-of-plane to in-plane magnetization, were found to be determined by the stencil mask, whilst the scale of the magnetic reversal by the physical microstructure. The nucleation fields were substantially reduced to 50 Oe for the in-plane regions ... continued below

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Kusinski, G.J.; Krishnan, K.M.; Denbeaux, G.; Thomas, G.; Terris, B.D. & Weller, D. April 1, 2001.

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The three-dimensional magnetic structure and reversal mechanism of patterned Co/Pt multilayers, were imaged using complementary Lorentz transmission electron microscopy (LTEM) (in-plane component) and magnetic transmission x-ray microscopy (M-TXM) (perpendicular magnetization). The Co/Pt films with perpendicular anisotropy were patterned by ion irradiation through a stencil mask to produce in-plane magnetization in the irradiated regions. The boundaries of the patterns, defined by the transition from out-of-plane to in-plane magnetization, were found to be determined by the stencil mask, whilst the scale of the magnetic reversal by the physical microstructure. The nucleation fields were substantially reduced to 50 Oe for the in-plane regions and 1 kOe for the perpendicular regions, comparing to 4.5 kOe for the as-grown film. The perpendicular reversals were found to always originate at the pattern boundaries.

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  • Journal Name: Applied Physics Letters; Journal Volume: 79; Journal Issue: 14; Other Information: Journal Publication Date: October 1, 2001

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  • Report No.: LBNL--46717
  • Grant Number: AC03-76SF00098
  • DOI: 10.1063/1.1407301 | External Link
  • Office of Scientific & Technical Information Report Number: 788021
  • Archival Resource Key: ark:/67531/metadc724517

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  • April 1, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 4, 2016, 5:58 p.m.

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Kusinski, G.J.; Krishnan, K.M.; Denbeaux, G.; Thomas, G.; Terris, B.D. & Weller, D. Magnetic imaging of ion-irradiation patterned Co/Pt multilayers using complementary electron and photon probes, article, April 1, 2001; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc724517/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.