Highly oriented multiferroic Ba 2 NdFeNb 4 O 15 -based composite thin films with tetragonal tungsten bronze structure on silicon substrates

Hajlaoui, Thameur; Harnagea, Cătălin; Michau, Dominique; Josse, Michaël; Pignolet, A.

doi:10.1016/j.jallcom.2017.04.051

Cited by 21 publications

(13 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Taking into account of a shift of the loop and the film thickness, the residual polarization was P r = 4.08 µC/cm 2 , the coercive field was E c = 17 kV/cm, and the energy switching losses were W loss = 25.27 µJ/cm 2 . The coercive field, residual and full polarization recorded in our case were comparable to those for the BNFNO/Pt(111)/Si(001) c-oriented films [14] and exceeded those for BNFNO/Pt(001)/MgO(001) [15]. The analysis of the ferroelectric fatigue of the BNFNO film (Fig.…”

Section: Resultssupporting

confidence: 72%

Structure, dielectric and ferroelectric properties of Ba-=SUB=-2-=/SUB=-NdFeNb-=SUB=-4-=/SUB=-O-=SUB=-15-=/SUB=- multiferroic thin films

Pavlenko

Ilina

Киселев

et al. 2022

Physics of the Solid State

View full text Add to dashboard Cite

The phase composition, nanostructure, and properties of Ba2NdFeNb4O15 multiferroic thin films are studied by X-ray diffraction, dielectric spectroscopy, methods for analyzing ferroelectric properties, and scanning probe microscopy. Films were grown on the single-crystal Pt/MgO(001) substrate by a one-stage RF cathode sputtering technique in an oxygen atmosphere. It has been established that the Ba2NdFeNb4O15 films are single-phase, impurity-free, and c-oriented, which made it possible to study their dielectric properties along the polar direction. tensile deformation of the unit cell (1.35% along the polar axis) has found in the films, which led to the realization of the ferroelectric phase in the BNFNO film at room temperature. The revealed dependencies and the prospects for using this material in the nanosized thin films form are discussed. Keywords: multiferroic, dielectric characteristics, ferroelectric, tetragonal tungsten bronze.

show abstract

Section: Resultssupporting

confidence: 72%

Structure, dielectric and ferroelectric properties of Ba-=SUB=-2-=/SUB=-NdFeNb-=SUB=-4-=/SUB=-O-=SUB=-15-=/SUB=- multiferroic thin films

Pavlenko

Ilina

Киселев

et al. 2022

Physics of the Solid State

View full text Add to dashboard Cite

show abstract

“…In particular, the lattice parameters of the tetragonal structure were determined to be a ≈12.458 Å and b ≈ 3.928 Å [24]. The crystallite size is determined to be around 35 nm using Scherrer's formula [31], which is in accordance with [32]. A sketch of the TTB-Sm crystal structure seen along the crystallographic c-axis is drawn using the software VESTA, and the crystallographic data provided in [24,33] are shown in the inset of Fig.…”

Section: Resultsmentioning

confidence: 99%

Tetragonal tungsten bronze/barium hexaferrite room-temperature multiferroic composite ceramics

Hajlaoui

Josse

et al. 2020

SN Appl. Sci.

View full text Add to dashboard Cite

The spontaneously formed multiferroic composite based on tetragonal tungsten bronze structure was successfully synthesized in the form of ceramics by the solid-state reaction. The crystallization of the ceramics in the tetragonal tungsten bronze structure Ba 2 SmFeNb 4 O 15 and the presence of a secondary magnetic phase of barium hexaferrite BaFe 12 O 19 were established by structural investigation. The hysteresis behavior describing the polarization as a function of an applied electric field and the high ferroelectric Curie temperature ≈ 417 K evidenced the room-temperature ferroelectric properties of the synthesized material. While the piezoelectric coefficients were determined to be around 1.3 pm/V, the microscopic polar domains of the composite ceramics were established by microelectromechanical study. The hysteresis loop of the magnetization versus magnetic field and the high magnetic transition temperature ≈ 590 K evidenced the ferromagnetic properties of the secondary phase and its presence at room temperature. Moreover, the spatial distribution of the magnetic domains was determined microscopically. In this study, not only the multiferroic properties of the Ba 2 SmFeNb 4 O 15 /BaFe 12 O 19 composites have been studied and presented, but the distribution of the polar and magnetic properties was locally investigated as well.

show abstract

“…Although BaFe 12 O 19 thin films have been synthesized using a variety of methods [ 41 , 42 , 43 ], Ba 2 EuFeNb 4 O 15 films have only been deposited by sputtering [ 31 ] and by pulsed laser deposition because of their complex structure [ 37 , 38 , 39 , 40 , 44 ]. Therefore, in order to prepare the Ba 2 EuFeNb 4 O 15 /BaFe 12 O 19 heterostructured nanocomposite, BaFe 12 O 19 (BaFO) and Ba 2 EuFeNb 4 O 15 (TTB-Eu) thin films have been sequentially grown on single crystalline Nb-doped SrTiO 3 (100) (NSTO) substrates using pulsed laser deposition (PLD).…”

Section: Methodsmentioning

confidence: 99%

“…By optimizing the deposition conditions, we have achieved high-quality epitaxial multiferroic thin films with ferroelectric properties which are considerably enhanced compared to ceramics [ 37 , 38 ]. Nevertheless, their magnetic properties were weak even after varying the nature of Ln ions (chemical composition) [ 39 , 40 ], making the study of the magnetoelectric coupling in these films very challenging.…”

Section: Introductionmentioning

confidence: 99%

Magnetoelectric Coupling in Room Temperature Multiferroic Ba2EuFeNb4O15/BaFe12O19 Epitaxial Heterostructures Grown by Laser Ablation

2023

View full text Add to dashboard Cite

Multiferroic thin films are a promising class of multifunctional materials, since they allow the integration of multiple functionalities within a single device. In order to overcome the scarcity of single phase multiferroics, it is crucial to develop novel multiferroic heterostructures, combining good ferroelectric and ferromagnetic properties as well as a strong coupling between them. For this purpose, Ba2EuFeNb4O15/BaFe12O19 multiferroic magnetoelectric bilayers have been epitaxially grown on niobium doped SrTiO3 (100) single crystal substrates by pulsed laser deposition. The simultaneous presence of both ferroelectric and magnetic properties—due, respectively, to the Ba2EuFeNb4O15 and BaFe12O19 components—was demonstrated at room temperature, attesting the multiferroic nature of the heterostructure. More interestingly, a strong magnetoelectric coupling was demonstrated (i) by manipulating the ferroelectric properties via an external magnetic field, and conversely, (ii) by tuning the magnetic properties via an external electric field. This strong magnetoelectric coupling shows the high interdependence of both ferroic orders in the Ba2EuFeNb4O15/BaFe12O19 heterostructure, mediated by elastic (epitaxial) strain at the interfaces.

show abstract

Highly oriented multiferroic Ba 2 NdFeNb 4 O 15 -based composite thin films with tetragonal tungsten bronze structure on silicon substrates

Cited by 21 publications

References 45 publications

Structure, dielectric and ferroelectric properties of Ba-=SUB=-2-=/SUB=-NdFeNb-=SUB=-4-=/SUB=-O-=SUB=-15-=/SUB=- multiferroic thin films

Structure, dielectric and ferroelectric properties of Ba-=SUB=-2-=/SUB=-NdFeNb-=SUB=-4-=/SUB=-O-=SUB=-15-=/SUB=- multiferroic thin films

Tetragonal tungsten bronze/barium hexaferrite room-temperature multiferroic composite ceramics

Magnetoelectric Coupling in Room Temperature Multiferroic Ba2EuFeNb4O15/BaFe12O19 Epitaxial Heterostructures Grown by Laser Ablation

Contact Info

Product

Resources

About