Correlation between Crystallographic and Magnetic Domains at Co/NiO(001) Interfaces

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Using soft x-ray spectromicroscopy we show that NiO(001) exhibits a crystallographic and magnetic domain structure near the surface identical to that of the bulk. Upon Co deposition a perpendicular coupling between the Ni and Co moments is observed that persists even after formation of uncompensated Ni spins at the interface through annealing. The chemical composition at the interface alters its crystallographic structure and leads to a reorientation of the Ni moments from the <112> to the <110> direction. We show that this reorientation is driven by changes in the magnetocrystalline anisotropy rather than exchange coupling mediated by residual uncompensated spins.

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Ohldag, H.; van der Laan, G. & Arenholz, E. December 18, 2008.

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Using soft x-ray spectromicroscopy we show that NiO(001) exhibits a crystallographic and magnetic domain structure near the surface identical to that of the bulk. Upon Co deposition a perpendicular coupling between the Ni and Co moments is observed that persists even after formation of uncompensated Ni spins at the interface through annealing. The chemical composition at the interface alters its crystallographic structure and leads to a reorientation of the Ni moments from the <112> to the <110> direction. We show that this reorientation is driven by changes in the magnetocrystalline anisotropy rather than exchange coupling mediated by residual uncompensated spins.

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  • Journal Name: Physical Review B; Journal Volume: 79

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  • Report No.: LBNL-1705E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 951111
  • Archival Resource Key: ark:/67531/metadc928788

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  • December 18, 2008

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  • Nov. 13, 2016, 7:26 p.m.

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  • Jan. 4, 2017, 3:32 p.m.

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Ohldag, H.; van der Laan, G. & Arenholz, E. Correlation between Crystallographic and Magnetic Domains at Co/NiO(001) Interfaces, article, December 18, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc928788/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.