Coherent growth of α-Fe2O3 in Ti and Nd co-doped BiFeO3 thin films

Huairuo Zhang; Daniel M. Marincel; Susan Trolier-McKinstry; W. Mark Rainforth; Ian M. Reaney

doi:10.1080/21663831.2016.1160260

Coherent growth of α-Fe₂O₃ in Ti and Nd co-doped BiFeO₃ thin films

Huairuo Zhang, Daniel M. Marincel, Susan Trolier-McKinstry, W. Mark Rainforth, Ian M. Reaney

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2 Scopus citations

Abstract

Coherent dendritic α-Fe₂O₃ precipitates were observed to form at the surface of epitaxial films of (Bi_0.75Nd_0.25)(Fe_0.97Ti_0.03)O₃ (BNFO) grown by pulsed laser deposition. The Fe2O3 dendrites are assemblages of nanosized particles with an approximate length of 500 nm. Through the use of atomic resolution scanning transmission electron microscopy, a transition zone at the BNFO/α-Fe₂O₃ interface, ~2 unit-cells wide, was observed to be Fe₂O₃-rich with the perovskite structure. It is proposed that the formation of the Fe₂O₃-rich perovskite structure encourages epitaxial growth of the α-Fe₂O₃ rather than the formation of the incoherent Fe₂O₃ particulate second phase frequently reported in BiFeO₃-based thin films.

Original language	English (US)
Pages (from-to)	168-173
Number of pages	6
Journal	Materials Research Letters
Volume	4
Issue number	3
DOIs	https://doi.org/10.1080/21663831.2016.1160260
State	Published - Mar 22 2016

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1080/21663831.2016.1160260

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title = "Coherent growth of α-Fe2O3 in Ti and Nd co-doped BiFeO3 thin films",

abstract = "Coherent dendritic α-Fe2O3 precipitates were observed to form at the surface of epitaxial films of (Bi0.75Nd0.25)(Fe0.97Ti0.03)O3 (BNFO) grown by pulsed laser deposition. The Fe2O3 dendrites are assemblages of nanosized particles with an approximate length of 500 nm. Through the use of atomic resolution scanning transmission electron microscopy, a transition zone at the BNFO/α-Fe2O3 interface, ~2 unit-cells wide, was observed to be Fe2O3-rich with the perovskite structure. It is proposed that the formation of the Fe2O3-rich perovskite structure encourages epitaxial growth of the α-Fe2O3 rather than the formation of the incoherent Fe2O3 particulate second phase frequently reported in BiFeO3-based thin films.",

author = "Huairuo Zhang and Marincel, {Daniel M.} and Susan Trolier-McKinstry and Rainforth, {W. Mark} and Reaney, {Ian M.}",

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T1 - Coherent growth of α-Fe2O3 in Ti and Nd co-doped BiFeO3 thin films

AU - Zhang, Huairuo

AU - Marincel, Daniel M.

AU - Trolier-McKinstry, Susan

AU - Rainforth, W. Mark

AU - Reaney, Ian M.

PY - 2016/3/22

Y1 - 2016/3/22

N2 - Coherent dendritic α-Fe2O3 precipitates were observed to form at the surface of epitaxial films of (Bi0.75Nd0.25)(Fe0.97Ti0.03)O3 (BNFO) grown by pulsed laser deposition. The Fe2O3 dendrites are assemblages of nanosized particles with an approximate length of 500 nm. Through the use of atomic resolution scanning transmission electron microscopy, a transition zone at the BNFO/α-Fe2O3 interface, ~2 unit-cells wide, was observed to be Fe2O3-rich with the perovskite structure. It is proposed that the formation of the Fe2O3-rich perovskite structure encourages epitaxial growth of the α-Fe2O3 rather than the formation of the incoherent Fe2O3 particulate second phase frequently reported in BiFeO3-based thin films.

AB - Coherent dendritic α-Fe2O3 precipitates were observed to form at the surface of epitaxial films of (Bi0.75Nd0.25)(Fe0.97Ti0.03)O3 (BNFO) grown by pulsed laser deposition. The Fe2O3 dendrites are assemblages of nanosized particles with an approximate length of 500 nm. Through the use of atomic resolution scanning transmission electron microscopy, a transition zone at the BNFO/α-Fe2O3 interface, ~2 unit-cells wide, was observed to be Fe2O3-rich with the perovskite structure. It is proposed that the formation of the Fe2O3-rich perovskite structure encourages epitaxial growth of the α-Fe2O3 rather than the formation of the incoherent Fe2O3 particulate second phase frequently reported in BiFeO3-based thin films.

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Coherent growth of α-Fe₂O₃ in Ti and Nd co-doped BiFeO₃ thin films

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