Ferroelectric domains in epitaxial PbTiO3 films on LaAlO3 substrate investigated by piezoresponse force microscopy and far-infrared reflectance

Simon, Elaine; Borodavka, Fedir; Gregora, I.; Kamba, S.; Hlinka, J.; Bartasyte, Ausrine; Margueron, Samuel

doi:10.1063/1.3651510

Cited by 12 publications

(3 citation statements)

References 55 publications

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“…Two types of stripe domains differing by the domain width have been distinguished. This result is in good accordance with the available data [4,5].…”

Section: Structure Formation Of Pzt Ceramics 85supporting

confidence: 95%

Structure Formation of PZT Ceramics

et al. 2015

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“…Two types of stripe domains differing by the domain width have been distinguished. This result is in good accordance with the available data [4,5].…”

Section: Structure Formation Of Pzt Ceramics 85supporting

confidence: 95%

Structure Formation of PZT Ceramics

et al. 2015

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“…However, similar density and pattern of 180-degree walls was observed in PTO films grown on LaAlO 3 (LAO) substrates. 30 The orientation of polarization in PTO films grown on SSO can be identified by the analysis of the PFM signal in the vertical and the lateral mode. The long axis of the AFM cantilever was parallel to the [010] direction indicated in Fig.…”

Section: Resultsmentioning

confidence: 99%

Ferroelectric nanodomains in epitaxial PbTiO3 films grown on SmScO3 and TbScO3 substrates

Borodavka

Gregora

Bartasyte

et al. 2013

Journal of Applied Physics

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“…Fourth, the nominal valence of Ti in perovskites can vary from +4 as in PTO to +3 as in YTiO 3 (the latter is magnetic-active), which allows the possibility to “create” magnetic moments in these SLs. Last, despite the non-negligible lattice mismatch, previous experiments have fabricated epitaxial PTO films on the LAO substrates 20 and there are also theoretical studies on LAO/PTO SLs 21 , making the present design be practical.…”

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confidence: 99%

Ferroelectricity driven magnetism at domain walls in LaAlO3/PbTiO3 superlattices

Zhou

Dong

Liu

et al. 2015

Sci Rep

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multiferroics. Despite the progress in the past decade, for most multiferroics their magnetoelectric performance remains poor due to the intrinsic exclusion between charge dipole and spin moment. As an alternative approach, the oxide heterostructures may evade the intrinsic limits in bulk materials and provide more attractive potential to realize the magnetoelectric functions. Here we perform a first-principles study on LaAlO 3 /PbTiO 3 superlattices. Although neither of the components is magnetic, magnetic moments emerge at the ferroelectric domain walls of PbTiO 3 in these superlattices. Such a twist between ferroelectric domain and local magnetic moment, not only manifests an interesting type of multiferroicity, but also is possible useful to pursuit the electricalcontrol of magnetism in nanoscale heterostructures.With the developments of modern thin film technologies, it becomes possible to fabricate and characterize oxide superlattices (SLs) and heterostructures (HSs) down to the atomic level 1-3 . Oxide SLs and HSs can display many curious properties different from the parent bulk materials. For example, those SLs constructed by charge-polar layers and charge-neutral layers, have attracted a lot of research interests for the two-dimensional electron gas (2DEG) due to the so-called polar catastrophe [4][5][6] . Recently, theoretical simulations predicted that if ferroelectrics are involved in the SLs with charge polar discontinuity, the ferroelectricity can modulate the interfacial 2DEG, namely the 2DEG can be switched from one interface to the opposite one by flipping the ferroelectric (FE) polarization [7][8][9][10][11] .It is the common sense that ferroelectricity (or antiferroelectricity) and ferromagnetism (or antiferromagnetism) are difficult to coexist in one system because in general FE dipoles favor empty d orbitals while magnetic moments need partially-occupied d orbitals. Therefore, despite the great progress in the past decade, the magnetoelectric performance of most multiferroic bulks remains poor. An alternative route to pursuit magnetoelectricity is to utilize oxide HSs, e.g. a strong FE material plus a strong ferromagnetic (FM) material. The direct advantage of such magnetoelectric HSs is the strong FE and FM signals, however, the magnetoelectric coupling between the FE and FM layers is indirect, which is usually via the strain effect or field effect. Very recently, Rogdakis et al. obtained the FE polarization in the NdMnO 3 /SrMnO 3 /LaMnO 3 SL 12 , in which the FE polarization was related to the antiferromagnetic (AFM) order of Mn. In this sense, the NdMnO 3 /SrMnO 3 /LaMnO 3 SL is somewhat similar to the so-called type-II multiferroics, in which the FE polarizations are directly driven by magnetic orders and thus the strong magnetoelectric coupling is intrinsically guaranteed 13,14 .In this work, another kind of oxide SLs consisting of LaAlO 3 (LAO) and PbTiO 3 (PTO) is investigated to pursuit the inverse property: the polarization driven magnetism. Both LAO and PTO are well studied perov...

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Ferroelectric domains in epitaxial PbTiO3 films on LaAlO3 substrate investigated by piezoresponse force microscopy and far-infrared reflectance

Abstract: International audienc

Cited by 12 publications

References 55 publications

Structure Formation of PZT Ceramics

Structure Formation of PZT Ceramics

Ferroelectric nanodomains in epitaxial PbTiO3 films grown on SmScO3 and TbScO3 substrates

Ferroelectricity driven magnetism at domain walls in LaAlO3/PbTiO3 superlattices

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