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Characterization of the magnetic properties of a GdBa2Cu3O7/La0.75Sr0.25MnO3 superlattice using off-axis electron holography |
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| Authors: | T Kasama MS Moreno RE Dunin-Borkowski SB Newcomb J Guimpel PA Midgley |
| Institution: | a Frontier Research System, The Institute of Physical and Chemical Research, Hatoyama, Saitama 350-0395, Japan b Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK c Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, San Carlos de Bariloche, 8400 Rio Negro, Argentina d Glebe Scientific Limited, Glebe Laboratories, Newport, Co. Tipperary, Ireland e Universidad Nacional del Sur, Avda. Alem 1253, Bahía Blanca, 8000 Bs. As., Argentina f Instituto Balseiro, Universidad Nacional de Cuyo, San Carlos de Bariloche, 8400 Rio Negro, Argentina |
| Abstract: | Off-axis electron holography is used to characterize the magnetic properties of a GdBa2Cu3O7/La0.75Sr0.25MnO3 superlattice below the Curie temperature of the manganite layers, in both cross-sectional and plan-view geometry. The samples were prepared for electron microscopy using focused ion beam milling. Differences between the magnetic properties of successive manganite layers are observed in the cross-sectional sample. Magnetic ripple contrast and weakly magnetic regions are observed in plan-view geometry. Although the results may be affected by sample preparation for electron microscopy, the observed differences between the magnetic properties of the manganite layers are consistent between the different samples examined. |
| Keywords: | 75 47 Lx 75 70 Cn 42 40 Kw |
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