Stability of {111}Pd/{0002}ZnO polar interface formed by internal oxidation of Pd-Zn alloys

Kei Watanabe; Yuji Kunisada; Norihito Sakaguchi

doi:10.1093/jmicro/dfu095

Stability of {111}Pd/{0002}ZnO polar interface formed by internal oxidation of Pd-Zn alloys

Microscopy (Oxf). 2014 Dec;63(6):463-7. doi: 10.1093/jmicro/dfu095. Epub 2014 Oct 20.

Authors

Kei Watanabe¹, Yuji Kunisada¹, Norihito Sakaguchi²

Affiliations

¹ Center for Advanced Research of Energy and Materials, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan.
² Center for Advanced Research of Energy and Materials, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan sakaguchi@eng.hokudai.ac.jp.

PMID: 25332437
DOI: 10.1093/jmicro/dfu095

Abstract

We investigated the stability of Pd/ZnO polar interfaces formed by internal oxidation of Pd-Zn alloys by using high-resolution transmission electron microscopy, electron energy-loss spectroscopy and convergent-beam electron diffraction. At 1273 K, a [Formula: see text] polar interface defaceted and transformed into a curved interface, while another (111)Pd/(0002)ZnO polar interface retained its flatness. The [Formula: see text] polar interface lost some stability over non-polar interfaces at 1273 K, while the (111)Pd/(0002)ZnO polar interface remained stable.

Keywords: convergent-beam electron diffraction; interfacial structure; internal oxidation; polar interface.