Epitaxial growth of iridate pyrochlore Nd2Ir2O7 films

Gallagher, J. C.; Esser, B. D.; Morrow, R.; Dunsiger, S. R.; Williams, R. E. A.; Woodward, P. M.; McComb, D. W.; Yang, F. Y.

doi:10.1038/srep22282

Title: Epitaxial growth of iridate pyrochlore Nd₂Ir₂O₇ films

Journal Article · Mon Feb 29 00:00:00 EST 2016 · Scientific Reports

DOI:https://doi.org/10.1038/srep22282· OSTI ID:1255255

Gallagher, J. C. ^[1]; Esser, B. D. ^[1]; Morrow, R. ^[1]; Dunsiger, S. R. ^[1]; Williams, R. E. A. ^[1]; Woodward, P. M. ^[1]; McComb, D. W. ^[1]; Yang, F. Y. ^[1]

The Ohio State Univ., Columbus, OH (United States)

Epitaxial films of the pyrochlore Nd₂Ir₂O₇ have been grown on (111)-oriented yttria-stabilized zirconia (YSZ) substrates by off-axis sputtering followed by post-growth annealing. X-ray diffraction (XRD) results demonstrate phase-pure epitaxial growth of the pyrochlore films on YSZ. Scanning transmission electron microscopy (STEM) investigation of an Nd₂Ir₂O₇ film with a short post-annealing provides insight into the mechanism for crystallization of Nd₂Ir₂O₇ during the post-annealing process. STEM images reveal clear pyrochlore ordering of Nd and Ir in the films. As a result, the epitaxial relationship between the YSZ and Nd₂Ir₂O₇ is observed clearly while some interfacial regions show a thin region with polycrystalline Ir nanocrystals.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1255255

Journal Information:: Scientific Reports, Vol. 6; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 27 works

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