Skip to content

Research at St Andrews

Structural and dielectric studies of the phase behaviour of the topological ferroelectric La1-xNdxTaO4

Research output: Contribution to journalArticle

DOI

Open Access permissions

Open

Author(s)

Keith J. Cordrey, Magda Stanczyk, Charlotte Amy Louise Dixon, Kevin S. Knight, Jonathan Gardner, Finlay D. Morrison, Philip Lightfoot

School/Research organisations

Abstract

The layered perovskite LaTaO4 has been prepared in its polar orthorhombic polymorphic form at ambient temperature. Although no structural phase transition is observed in the temperature interval 25° C < T < 500 °C, a very large axial thermal contraction effect is seen, which can be ascribed to an anomalous buckling of the perovskite octahedral layer. The non-polar monoclinic polymorph can be stabilised at ambient temperature by Nd-doping. A composition La0.90Nd0.10TaO4 shows a first-order monoclinic-orthorhombic (non-polar to polar) transition in the region 250° C < T < 350 °C. Dielectric responses are observed at both the above structural events but, despite the ‘topological ferroelectric’ nature of orthorhombic LaTaO4, we have not succeeded in obtaining ferroelectric PE hysteresis behaviour. Structural relationships in the wider family of AnBnX3n+2 layered perovskites are discussed.

Close

Details

Original languageEnglish
Pages (from-to)10673-10680
JournalDalton Transactions
Volume44
Issue number23
Early online date19 Jan 2015
DOIs
Publication statusPublished - 21 Jun 2015

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

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

    McNulty, J. A., Tran, T. T., Halasyamani, P. S., McCartan, S., MacLaren, I., Gibbs, A., Lim, F., Turner, P., Gregg, J. M., Lightfoot, P. & Morrison, F. D., 7 Aug 2019, In : Advanced Materials. Early View, 1903620.

    Research output: Contribution to journalArticle

  2. Superexchange-mediated negative thermal expansion in Nd-doped BiFeO3

    Kavanagh, C. M., Lightfoot, P. & Morrison, F. D., 7 Apr 2018, In : Journal of Materials Chemistry C. 6, 13, p. 3260-3270

    Research output: Contribution to journalArticle

  3. Thermal evolution of the crystal structure of the orthorhombic perovskite LaFeO3

    Dixon, C. A. L., Kavanagh, C. M., Knight, K. S., Kockelmann, W., Morrison, F. D. & Lightfoot, P., Oct 2015, In : Journal of Solid State Chemistry. 230, p. 337-342

    Research output: Contribution to journalArticle

  4. Magnetically Driven Dielectric and Structural Behavior in Bi0.5La0.5FeO3

    Kavanagh, C. M., Goff, R. J., Daoud-Aladine, A., Lightfoot, P. & Morrison, F. D., 11 Dec 2012, In : Chemistry of Materials. 24, 23, p. 4563-4571 9 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Dalton Transactions (Journal)

    Finlay Morrison (Reviewer)
    2011 → …

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

Related by journal

  1. A hybrid fluoride layered perovskite, (enH2)MnF4

    Li, T., Clulow, R., Bradford, A., Lee, S. L., Slawin, A. M. Z. & Lightfoot, P., 21 Apr 2019, In : Dalton Transactions. 48, 15, p. 4784-4787 4 p.

    Research output: Contribution to journalArticle

  2. Conjugated, rigidified bibenzimidazole ancillary ligands for enhanced photoluminescence quantum yields of orange/red-emitting iridium(III) complexes

    Henwood, A. F., Antón-García, D., Morin, M., Rota Martir, D., Cordes, D. B., Casey, C., Slawin, A. M. Z., Lebl, T., Buehl, M. & Zysman-Colman, E., 14 Jul 2019, In : Dalton Transactions. 48, 26

    Research output: Contribution to journalArticle

  3. Electronic effects in mixed N-heterocyclic carbene/phosphite indenylidene ruthenium metathesis catalysts

    Bidal, Y. D., Urbina-Blanco, C. A., Poater, A., Cordes, D. B., Slawin, A. M. Z., Cavallo, L. & Cazin, C. S. J., 14 Aug 2019, In : Dalton Transactions. 48, 30, p. 11326-11337 12 p.

    Research output: Contribution to journalArticle

  4. Perovzalates: a family of perovskite-related oxalates

    Clulow, R., Bradford, A. J., Lee, S. L. & Lightfoot, P., 14 Oct 2019, In : Dalton Transactions. 48, 38, p. 14461-14466 6 p.

    Research output: Contribution to journalArticle

  5. Photophysical investigation of near infrared emitting lanthanoid complexes incorporating tris(2-naphthoyl)methane as a new antenna ligand

    Abad Galán, L., Wada, S., Cameron, L., Sobolev, A., Hasegawa, Y., Zysman-Colman, E., Ogden, M. & Massi, M., 21 Mar 2019, In : Dalton Transactions. 48, 11, p. 3768-3776

    Research output: Contribution to journalArticle

ID: 166942017

Top