Epitaxial growth of iridate pyrochlore Nd2Ir2O7 films

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

doi:10.1038/srep22282

Epitaxial growth of iridate pyrochlore Nd₂Ir₂O₇ films

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

Research output: Contribution to journal › Article › Research › peer-review

32 Citations (Scopus)

Abstract

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. The epitaxial relationship between the YSZ and Nd₂Ir₂O₇ is observed clearly while some interfacial regions show a thin region with polycrystalline Ir nanocrystals.

Original language	English
Article number	22282
Number of pages	7
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep22282
Publication status	Published - 29 Feb 2016
Externally published	Yes

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272300734-oaFinal published version, 1.29 MBLicence: CC BY

Cite this

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title = "Epitaxial growth of iridate pyrochlore Nd2Ir2O7 films",

abstract = "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. The epitaxial relationship between the YSZ and Nd2Ir2O7 is observed clearly while some interfacial regions show a thin region with polycrystalline Ir nanocrystals.",

author = "Gallagher, {J. C.} and Esser, {B. D.} and R. Morrow and Dunsiger, {S. R.} and Williams, {R. E. A.} and Woodward, {P. M.} and McComb, {D. W.} and Yang, {F. Y.}",

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doi = "10.1038/srep22282",

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T1 - Epitaxial growth of iridate pyrochlore Nd2Ir2O7 films

AU - Gallagher, J. C.

AU - Esser, B. D.

AU - Morrow, R.

AU - Dunsiger, S. R.

AU - Williams, R. E. A.

AU - Woodward, P. M.

AU - McComb, D. W.

AU - Yang, F. Y.

PY - 2016/2/29

Y1 - 2016/2/29

N2 - 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. The epitaxial relationship between the YSZ and Nd2Ir2O7 is observed clearly while some interfacial regions show a thin region with polycrystalline Ir nanocrystals.

AB - 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. 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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Epitaxial growth of iridate pyrochlore Nd2Ir2O7 films

Abstract

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Epitaxial growth of iridate pyrochlore Nd₂Ir₂O₇ films