This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1016/j.jcrysgro.2006.12.026 in citations.
High resolution electron microscopy of microstructure of SrTiO3/BaZrO3 bilayer thin films on MgO substrates
High resolution electron microscopy of microstructure of SrTiO3/BaZrO3 bilayer thin films on MgO substrates
SrTiO3/BaZrO3 heterofilms as buffer layers are deposited on (001) MgO substrates by an RF-sputtering technique. The atomic structure and the defect configuration at the interfaces are investigated by means of aberration-corrected high-resolution transmission electron microscopy. At the BaZrO3/MgO in...
Saved in:
Personal Name(s): | Mi, S. B. |
---|---|
Jia, C. L. / Faley, M. / Poppe, U. / Urban, K. | |
Contributing Institute: |
Mikrostrukturforschung; IFF-8 JARA-FIT; JARA-FIT |
Published in: | Journal of crystal growth, 300 (2007) S. 478 - 482 |
Imprint: |
Amsterdam [u.a.]
Elsevier
2007
|
Physical Description: |
478 - 482 |
DOI: |
10.1016/j.jcrysgro.2006.12.026 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Journal of Crystal Growth
300 |
Subject (ZB): | |
Publikationsportal JuSER |
SrTiO3/BaZrO3 heterofilms as buffer layers are deposited on (001) MgO substrates by an RF-sputtering technique. The atomic structure and the defect configuration at the interfaces are investigated by means of aberration-corrected high-resolution transmission electron microscopy. At the BaZrO3/MgO interface, two types of interfacial structures, MgO/ZrO2-type and MgO/BaO-type, are observed. Antiphase boundaries and dislocations are found at the BaZrO3/MgO interface. The formation of these lattice defects is discussed in terms of film growth and structural imperfections of the substrate surface. At the SrTiO3/BaZrO3 interface, a high density of misfit dislocations is observed with different configurations. The formation of these dislocations contributes both to the relaxation of the large misfit strain and to stopping of the further propagation of lattice defects which are formed in the BaZrO3 layer into the SrTiO3 layer. (c) 2007 Elsevier B.V. All rights reserved. |