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An electronically-driven improper ferroelectric: tungsten bronzes as microstructural analogues for the hexagonal manganites

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An electronically-driven improper ferroelectric : tungsten bronzes as microstructural analogues for the hexagonal manganites. / McNulty, Jason A.; Tran, T. Thao; Halasyamani, P. Shiv; McCartan, Shane; MacLaren, Ian; Gibbs, Alexandra; Lim, Felicia; Turner, Patrick; Gregg, J. Marty; Lightfoot, Philip; Morrison, Finlay D.

In: Advanced Materials, Vol. Early View, 1903620, 07.08.2019.

Research output: Contribution to journalArticle

Harvard

McNulty, JA, Tran, TT, Halasyamani, PS, McCartan, S, MacLaren, I, Gibbs, A, Lim, F, Turner, P, Gregg, JM, Lightfoot, P & Morrison, FD 2019, 'An electronically-driven improper ferroelectric: tungsten bronzes as microstructural analogues for the hexagonal manganites', Advanced Materials, vol. Early View, 1903620. https://doi.org/10.1002/adma.201903620

APA

McNulty, J. A., Tran, T. T., Halasyamani, P. S., McCartan, S., MacLaren, I., Gibbs, A., ... Morrison, F. D. (2019). An electronically-driven improper ferroelectric: tungsten bronzes as microstructural analogues for the hexagonal manganites. Advanced Materials, Early View, [1903620]. https://doi.org/10.1002/adma.201903620

Vancouver

McNulty JA, Tran TT, Halasyamani PS, McCartan S, MacLaren I, Gibbs A et al. An electronically-driven improper ferroelectric: tungsten bronzes as microstructural analogues for the hexagonal manganites. Advanced Materials. 2019 Aug 7;Early View. 1903620. https://doi.org/10.1002/adma.201903620

Author

McNulty, Jason A. ; Tran, T. Thao ; Halasyamani, P. Shiv ; McCartan, Shane ; MacLaren, Ian ; Gibbs, Alexandra ; Lim, Felicia ; Turner, Patrick ; Gregg, J. Marty ; Lightfoot, Philip ; Morrison, Finlay D. / An electronically-driven improper ferroelectric : tungsten bronzes as microstructural analogues for the hexagonal manganites. In: Advanced Materials. 2019 ; Vol. Early View.

Bibtex - Download

@article{91ebf531b8b142de80bc0a3a6dcec3f5,
title = "An electronically-driven improper ferroelectric: tungsten bronzes as microstructural analogues for the hexagonal manganites",
abstract = "Since the observation that the properties of ferroic domain walls (DWs) can differ significantly from the bulk materials in which they are formed, it has been realised that domain wall engineering offers exciting new opportunities for nano-electronics and nano- device architectures. We report a novel improper ferroelectric, CsNbW2O9, with the hexagonal tungsten bronze structure. Powder neutron diffraction and symmetry mode analysis indicates that the improper transition (TC ~ 1100 K) involves unit cell tripling, reminiscent of the hexagonal rare earth manganites. However in contrast to the manganites the symmetry breaking in CsNbW2O9 is electronically-driven (i.e., purely displacive) via the second order Jahn-Teller effect in contrast to the geometrically-driven tilt mechanism of the manganites. Nevertheless CsNbW2O9 displays the same kinds of domain microstructure as those found in the manganites, such as characteristic six-domain ‘cloverleaf’ vertices and DW sections with polar discontinuities. The discovery of a completely new material system, with domain patterns already known to generate interesting functionality in the manganites, is important for the emerging field of DW nanoelectronics.",
keywords = "Improper ferroelectricity, Ferroelectrics, Domain walls, Structure-property relationships",
author = "McNulty, {Jason A.} and Tran, {T. Thao} and Halasyamani, {P. Shiv} and Shane McCartan and Ian MacLaren and Alexandra Gibbs and Felicia Lim and Patrick Turner and Gregg, {J. Marty} and Philip Lightfoot and Morrison, {Finlay D.}",
note = "JAM would like to acknowledge the School of Chemistry, University of St Andrews for the allocation of a PhD studentship through the EPSRC doctoral training grant (EP/ K503162/1). The work carried out at the University of St Andrews and Queens University Belfast was carried out as part of an EPSRC-funded collaboration (EP/P02453X/1 and EP/P024637/1). The work carried out at the University of Glasgow was carried out as part of the EPSRC-funded CDT in Photonic Integration and Advanced Data Storage (EP/L015323/1). TTT and PSH thank the Welch Foundation (Grant E-1457) and NSF (DMR-1503573) for support.",
year = "2019",
month = "8",
day = "7",
doi = "10.1002/adma.201903620",
language = "English",
volume = "Early View",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-Blackwell",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - An electronically-driven improper ferroelectric

T2 - tungsten bronzes as microstructural analogues for the hexagonal manganites

AU - McNulty, Jason A.

AU - Tran, T. Thao

AU - Halasyamani, P. Shiv

AU - McCartan, Shane

AU - MacLaren, Ian

AU - Gibbs, Alexandra

AU - Lim, Felicia

AU - Turner, Patrick

AU - Gregg, J. Marty

AU - Lightfoot, Philip

AU - Morrison, Finlay D.

N1 - JAM would like to acknowledge the School of Chemistry, University of St Andrews for the allocation of a PhD studentship through the EPSRC doctoral training grant (EP/ K503162/1). The work carried out at the University of St Andrews and Queens University Belfast was carried out as part of an EPSRC-funded collaboration (EP/P02453X/1 and EP/P024637/1). The work carried out at the University of Glasgow was carried out as part of the EPSRC-funded CDT in Photonic Integration and Advanced Data Storage (EP/L015323/1). TTT and PSH thank the Welch Foundation (Grant E-1457) and NSF (DMR-1503573) for support.

PY - 2019/8/7

Y1 - 2019/8/7

N2 - Since the observation that the properties of ferroic domain walls (DWs) can differ significantly from the bulk materials in which they are formed, it has been realised that domain wall engineering offers exciting new opportunities for nano-electronics and nano- device architectures. We report a novel improper ferroelectric, CsNbW2O9, with the hexagonal tungsten bronze structure. Powder neutron diffraction and symmetry mode analysis indicates that the improper transition (TC ~ 1100 K) involves unit cell tripling, reminiscent of the hexagonal rare earth manganites. However in contrast to the manganites the symmetry breaking in CsNbW2O9 is electronically-driven (i.e., purely displacive) via the second order Jahn-Teller effect in contrast to the geometrically-driven tilt mechanism of the manganites. Nevertheless CsNbW2O9 displays the same kinds of domain microstructure as those found in the manganites, such as characteristic six-domain ‘cloverleaf’ vertices and DW sections with polar discontinuities. The discovery of a completely new material system, with domain patterns already known to generate interesting functionality in the manganites, is important for the emerging field of DW nanoelectronics.

AB - Since the observation that the properties of ferroic domain walls (DWs) can differ significantly from the bulk materials in which they are formed, it has been realised that domain wall engineering offers exciting new opportunities for nano-electronics and nano- device architectures. We report a novel improper ferroelectric, CsNbW2O9, with the hexagonal tungsten bronze structure. Powder neutron diffraction and symmetry mode analysis indicates that the improper transition (TC ~ 1100 K) involves unit cell tripling, reminiscent of the hexagonal rare earth manganites. However in contrast to the manganites the symmetry breaking in CsNbW2O9 is electronically-driven (i.e., purely displacive) via the second order Jahn-Teller effect in contrast to the geometrically-driven tilt mechanism of the manganites. Nevertheless CsNbW2O9 displays the same kinds of domain microstructure as those found in the manganites, such as characteristic six-domain ‘cloverleaf’ vertices and DW sections with polar discontinuities. The discovery of a completely new material system, with domain patterns already known to generate interesting functionality in the manganites, is important for the emerging field of DW nanoelectronics.

KW - Improper ferroelectricity

KW - Ferroelectrics

KW - Domain walls

KW - Structure-property relationships

U2 - 10.1002/adma.201903620

DO - 10.1002/adma.201903620

M3 - Article

VL - Early View

JO - Advanced Materials

JF - Advanced Materials

SN - 0935-9648

M1 - 1903620

ER -

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