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Domain structure of epitaxial SrRuO3 thin films on miscut (001) SrTiO3 substrates

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5 Author(s)
Jiang, J.C. ; Department of Materials Science & Engineering, The University of Michigan, Ann Arbor, Michigan 48109 ; Tian, W. ; Pan, X.Q. ; Gan, Q.
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The microstructure of epitaxial SrRuO3 thin films grown on vicinal (001) SrTiO3 substrates with miscut angle of 1.9° and miscut direction of 12° away from [100] direction was studied using transmission electron microscopy (TEM). Cross-section as well as plan-view TEM studies revealed that these films are single domain with the in-plane epitaxial orientation relationship of SrRuO3[001]//SrTiO3[010] and SrRuO3[1¯10]//SrTiO3[100]. This result is in contrast to the previous studies of the SrRuO3 thin films grown on exactly (001) SrTiO3, which are composed of two types of [110] domains with nearly the same volume fraction. The occurrence of these different domain structures is attributed to the step-flow growth of the film on the substrate surface due to the miscut. © 1998 American Institute of Physics.

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Applied Physics Letters  (Volume:72 ,  Issue: 23 )