Materials News: Interfacial chemistry and atomic arrangement of ZrO{sub 2} − La{sub 2/3}Sr{sub 1/3}MnO{sub 3} pillar-matrix structures

Journal Article · Mon Dec 01 00:00:00 EST 2014 · APL materials

DOI:https://doi.org/10.1063/1.4904819· OSTI ID:22415234

Zhou, Dan; Sigle, Wilfried; Wang, Yi; Kelsch, Marion; Aken, Peter A. van ^[1]; Okunishi, Eiji ^[2]; Habermeier, Hanns-Ulrich ^[3]

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1. Max Planck Institute for Intelligent Systems, Stuttgart Center for Electron Microscopy, Heisenbergstrasse 3, 70569 Stuttgart (Germany)
2. JEOL Ltd., 1-2 Musashino, 3-Chome Akishima, 196-8558 Tokyo (Japan)
3. Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart (Germany)

We studied ZrO{sub 2} − La{sub 2/3}Sr{sub 1/3}MnO{sub 3} pillar–matrix thin films which were found to show anomalous magnetic and electron transport properties. With the application of an aberration-corrected transmission electron microscope, interfacial chemistry, and atomic-arrangement of the system, especially of the pillar–matrix interface were revealed at atomic resolution. Minor amounts of Zr were found to occupy Mn positions within the matrix. The Zr concentration reaches a minimum near the pillar–matrix interface accompanied by oxygen vacancies. La and Mn diffusion into the pillar was revealed at atomic resolution and a concomitant change of the Mn valence state was observed.

• OSTI ID: 22415234
• Journal Information: APL materials, Vol. 2, Issue 12; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2166-532X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CONCENTRATION RATIO
DIFFUSION
ELECTRONS
INTERFACES
LANTHANUM COMPOUNDS
MAGNETORESISTANCE
MANGANATES
MATRIX MATERIALS
OXYGEN
STRONTIUM COMPOUNDS
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY
VACANCIES
VALENCE
ZIRCONIUM OXIDES