Dielectric and Piezoelectric Properties in Mn‐Modified (1−x)BiFeO3–xBaTiO3 Ceramics

Leontsev, S. O.; Eitel, Richard E.

doi:10.1111/j.1551-2916.2009.03313.x

Cited by 475 publications

(327 citation statements)

References 20 publications

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“…The measured maximum d 33 (124 pC N À1 ) of BT-0.725BFO for our samples is quite promising compared with the reported d 33 (116 pC N À1 ) for Mn-doped BT-0.75BFO. 28 The measured d 33 (54 pC N À1 ) of BT-0.75BFO is also comparable with the reported d 33 (47 pC N À1 ) of BT-0.75BFO. 28 Systematic measurement of d 33 as a function of composition in our study led to the identification of BT-0.725BFO composition that provides the best performance.…”

Section: Resultssupporting

confidence: 75%

“…28 The measured d 33 (54 pC N À1 ) of BT-0.75BFO is also comparable with the reported d 33 (47 pC N À1 ) of BT-0.75BFO. 28 Systematic measurement of d 33 as a function of composition in our study led to the identification of BT-0.725BFO composition that provides the best performance. There was no ME response in the BT-0.025BFO due to its small magnetic properties given by low content of Fe ions even though it exhibited good piezoelectric values (g 33 ¼ 10.5 Â 10 mV m N À1 and d 33 ¼ 78 pC N À1 ).…”

Section: Resultssupporting

confidence: 75%

“…24 Moreover, substitution of La, Nb, and Mn in the BaTiO 3 -BiFeO 3 has been studied in order to enhance the piezoelectric properties and DC resistivity. [25][26][27][28] Recently, improved piezoelectric value of d 33 ¼ 116 pC N À1 with high DC resistivity of 2.7 Â 10 7 X m was reported in Mn-modified BaTiO 3 -BiFeO 3 ceramics by Leontsev et al 28 In parallel, several studies on BaTiO 3 -BiFeO 3 29 Generally, ME effect can be classified as direct magnetoelectric (DME) effect and converse magnetoelectric (CME) effect. The DME effect (dE AC /dH AC ) is defined as the change in electric polarization in response to applied magnetic field.…”

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confidence: 85%

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Room-temperature magnetoelectric coupling in single-phase BaTiO3-BiFeO3 system

Yang

Kumar

Petkov

et al. 2013

Journal of Applied Physics

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In this paper, single-phase multiferroic ceramics of (1 − x) BaTiO3 − x BiFeO3 (BT − x BFO) were synthesized by solid-solution method in the wide range of material composition (x = 0.025 – 1.0). The changes in crystal structure were confirmed via X-ray diffractions (XRD) and atomic pair distribution functions (PDFs). The room-temperature ME coupling was found to exhibit significant magnitude in the narrow composition window (x = 0.71 – 0.8) where the average crystal structure was found to be rhombohedral. Especially, the BT – 0.725 BFO ceramics containing local monoclinic distortions within rhombohedral phase were found to exhibit high room-temperature ME coefficient (αME) of 0.87 mV/cm·Oe with high piezoelectric properties (g33 = 18.5 × 10 mV m N−1 and d33 = 124 pC N−1). We believe that the high room-temperature ME coupling in single-phase lead-free BT-BFO ceramics provides a possibility of developing electrically or magnetically tunable thin-film devices.

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Section: Resultssupporting

confidence: 75%

Section: Resultssupporting

confidence: 75%

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confidence: 85%

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Room-temperature magnetoelectric coupling in single-phase BaTiO3-BiFeO3 system

Yang

Kumar

Petkov

et al. 2013

Journal of Applied Physics

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“…9) Since then, a number of studies 10)15) have demonstrated the impressive properties, both electrical and electromechanical, that can be obtained from this family of materials, often without any additional compensatory doping and/ or process optimization. One of the more intriguing aspects of these systems (and one that is often noted in casual conversations among researchers working on these materials, but not often reported in modern literature) is how resilient they appear to be to relatively large changes in processing parameters that would, in many other electroceramic systems, result in dramatic changes in electrical properties.…”

Section: Introductionmentioning

confidence: 99%

Phase formation of BaTiO3–Bi(Zn1/2Ti1/2)O3 perovskite ceramics

Triamnak

Brennecka

Brown-Shaklee

et al. 2014

J. Ceram. Soc. Japan

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Materials based on BiMO 3 -modified BaTiO 3 have been shown to exhibit a number of attractive electrical and electromechanical properties. In addition, many of the materials in this broad family exhibit reduced sintering temperatures for densification as compared to pure BaTiO 3 . We report here a study of the phase evolution and sintering behavior of Bi(Zn 1/2 Ti 1/2 )O 3 -modified BaTiO 3 materials from low-cost mixed oxide/carbonate precursor powders. By accelerating the reaction of the BaCO 3 species and increasing the diffusion kinetics associated with densification, Bi(Zn 1/2 Ti 1/2 )O 3 additions reduce the calcination and sintering temperatures by ³200°C compared to unmodified BaTiO 3 . This system provides an example of the important and often overlooked role of additives in the calcination, phase evolution, and densification processes, and provides insight into mechanisms that may be further exploited in this and other important materials systems. We are quite honored to have the opportunity to publish in a special issue dedicated to the life and work of our dear late colleague Prof. Marija Kosec. The topic of this paper is fitting as well, since the work was in large part directly inspired by her work on the importance of reactions and intermediate phases in the alkali niobate systems 1)4) and heavily informed by her work on the Pb-based perovskites. 5),6) Marija appreciated better than most the importance of careful processing in the formation of fine ceramics, and the global ceramics community is grateful to her for all of the lessons that she taught us®and through her papers and her students, continues to teach us.

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“…[1][2][3] Owing to its rhombohedral structure, the ferrite has been considered as an end-member of a variety of leadfree solid solutions exhibiting morphotropic phase boundary (MPB), which is believed to be the key for obtaining high piezoelectric properties. Some recently studied systems are BiFeO 3 -REFeO 3 (RE = La, Nd, Sm, Gd, Dy), [4][5][6] BiFeO 3 -BaTiO 3 , 7,8 and BiFeO 3 -Bi(Zn 0.5 Ti 0.5 )O 3 . 9 In addition, the high T C of BiFeO 3 enables to design MPB compositions suitable for high-temperature piezoelectric applications, such as the recently emerged BiFeO 3 -PbTiO 3 .…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric nonlinearity and frequency dispersion of the direct piezoelectric response of BiFeO3 ceramics

Rojac¹,

Benčan²,

Dražić³

et al. 2012

Journal of Applied Physics

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We report on the frequency and stress dependence of the direct piezoelectric d 33 coefficient in BiFeO 3 ceramics. The measurements reveal considerable piezoelectric nonlinearity, i.e., dependence of d 33 on the amplitude of the dynamic stress. The nonlinear response suggests a large irreversible contribution of non-180° domain walls to the piezoelectric response of the ferrite, which, at present measurement conditions, reached a maximum of 38% of the total measured d 33 . In agreement with this interpretation, both types of non-180° domain walls, characteristic for the rhombohedral BiFeO 3 , i.e., 71° and 109°, were identified in the poled ceramics using transmission electron microscopy (TEM). In support to the link between nonlinearity and non-180° domain wall contribution, we found a correlation between nonlinearity and processes leading to deppining of domain walls from defects, such as quenching from above the Curie temperature and high-temperature sintering. In addition, the nonlinear piezoelectric response of BiFeO 3 showed a frequency dependence that is 2 qualitatively different from that measured in other nonlinear ferroelectric ceramics, such as "soft" (donor-doped) Pb(Zr,Ti)O 3 (PZT), i.e., in the case of the BiFeO 3 large nonlinearities were observed only at low field frequencies (<0.1 Hz); possible origins of this dispersion are discussed. Finally, we show that, once released from pinning centers, the domain walls can contribute extensively to the electromechanical response of BiFeO 3 ; in fact, the extrinsic domain-wall contribution is relatively as large as in Pb-based ferroelectric ceramics with morphotropic phase boundary (MPB) composition, such as PZT. This finding might be important in the search of new lead-free MPB compositions based on BiFeO 3 as it suggests that such compositions might also exhibit large extrinsic domain-wall contribution to the piezoelectric response. a) Electronic mail: tadej.rojac@ijs.si 3

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Dielectric and Piezoelectric Properties in Mn‐Modified (1−x)BiFeO₃–xBaTiO₃ Ceramics

Cited by 475 publications

References 20 publications

Room-temperature magnetoelectric coupling in single-phase BaTiO3-BiFeO3 system

Room-temperature magnetoelectric coupling in single-phase BaTiO3-BiFeO3 system

Phase formation of BaTiO<sub>3</sub>–Bi(Zn<sub>1/2</sub>Ti<sub>1/2</sub>)O<sub>3</sub> perovskite ceramics

Piezoelectric nonlinearity and frequency dispersion of the direct piezoelectric response of BiFeO3 ceramics

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