Phase transition and piezoelectric, ferromagnetic response of B-site (Co, Nb) modified BaTiO3 ceramics

Zhou, Min; Zhang, Jingji; Ji, Ludong; Wang, Yidan; Wang, Jiangying; Yu, Faxin

doi:10.1016/j.ceramint.2013.06.079

Cited by 18 publications

(5 citation statements)

References 27 publications

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“…Single-doping in BTO can easily form a hexagonal phase, so a co-doping strategy should be adopted to avoid the generation of hexagonal phase [13,17]. Recently, some researchers have discovered that the co-doping of transition metal ions and Nb 5+ ion can transform perovskite-type materials from tetragonal to cubic phases [14]. This adjustment of the crystalline structure can signi cantly slow down the reduction of its ferroelectric properties.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, Hiroyuki et al predicted that Mn-doped BTO have multiferroic based on total energy calculations [11]. Partial substitution of the Ti-site ions by transition metal ions possessing the d n con guration have simultaneously ferromagnetism and ferroelectricity at room temperature, which makes it a promising single-phase multiferroic material at room temperature [12][13][14][15]. In the existing research, past attempts to induce ferromagnetism of the BTO ceramic by the single-doping with the d n con guration which do not favor ferroelectricity have resulted in a rapid decrease of ferroelectricity [6,16].…”

Section: Introductionmentioning

confidence: 99%

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Structural, Electrical, Magnetic and Optical Properties of BaTi1-x(Ni1/2Nb1/2)xO3 Ceramics

Zhang

Zhou

et al. 2021

Preprint

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In this work, we have investigated the structural, electrical, magnetic and optical properties of Ni-Nb co-doped BaTiO3 ceramics. The compositions of BaTi1 − x(Ni1/2Nb1/2)xO3 were prepared through conventional solid-state reaction method. All the samples exhibit a gradual phase transition behavior from the tetragonal to a cubic structure with the increase of Ni-Nb co-doping concentration. The temperature dependence of the dielectric constant reveals that the transition temperature gradually decreased with an increase in Ni2+ and Nb5+ concentrations. The ferroelectric studies show these doping samples have relatively full ferroelectric hysteresis loops at room temperature, but exhibit a decreasing ferroelectric property with the increasing level of doping. The magnetic measurement suggests that these samples have ferromagnetic ordering at room temperature with an increase in the Ni-Nb doping. Moreover, band gaps of these samples are obviously reduced through the strategy of co-doping.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural, Electrical, Magnetic and Optical Properties of BaTi1-x(Ni1/2Nb1/2)xO3 Ceramics

Zhang

Zhou

et al. 2021

Preprint

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“…(1-x)BT-xBa(Co 1/2 Nb 1/2 )O 3 [21], (1-x)BT-xBa(Mg 1/3 Nb 2/3 )O 3 [22,23], (1-x)BT-xLa(Mg 1/2 Ti 1/2 )O 3 [24],…”

Section: Introductionmentioning

confidence: 99%

“…(1) for the compositions with 0.08 ≤ x ≤ 0.18. 97×1021 1.41×1013 1.10×1015 5.10×1015 4.32×1016 1.79×1014 The Curie-Weiss law for the (1-x)BaTiO 3 -xDyFeO 3 solid solution system. The fitting to Eq.…”

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confidence: 99%

Impact of quenched random fields on the ferroelectric-to-relaxor crossover in the solid solution (1−x)BaTiO3−xDyFeO3<

et al. 2018

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Lead-based perovskite relaxor ferroelectrics are widely used as materials for numerous applications due to their extraordinary dielectric, piezoelectric and electrostrictive properties. While the mechanisms of relaxor behavior are disputable, the importance of quenched (static) random electric fields created at nanoscale by the disordered heterovalent cations has been well recognized. Meanwhile, an increasing amount of scientific and technological efforts have been concentrated on lead-free perovskites, in particular, solid solutions of classical ferroelectric BaTiO 3 (BT), which better meet ecological requirements. Among BT-based solutions the homovalent systems are elaborately studied where strong random electric fields are absent, while the solubility limit of heterovalent solutions is typically too low to fully reveal the peculiarities of relaxor behavior. In this work, we prepared a new perovskite solid solution system (1-x)Ba 2+ Ti 4+ O 3-xDy 3+ Fe 3+ O 3 (0 ≤ x ≤ 0.3) and studied it as a model heterovalent lead-free system. We determined crystal structure, ferroelectric and 2 dielectric properties of ceramics in a wide range of temperatures and concentrations, constructed phase diagram, found and analyzed the concentration-induced crossover from normal ferroelectric to relaxor behavior. We demonstrated that quenched random electric fields of moderate strength promote the ferroelectric-to-relaxor crossover, but do not change qualitatively the peculiarities of relaxor behavior, while strong enough fields destroy the relaxor state, so that the material becomes an ordinary linear dielectric. The experimental results are compared with the predictions of known theories of relaxor ferroelectricity.

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“…In fact, the B-site acceptor–donor codoping has been researched in the ABO 3 -type materials. Nevertheless, early works even led some researcher to suggest that such doping may have little effect on the piezoelectric constant. , The B-site donor (Nb) and acceptor (Mn) codoping heteroatomic ions in ABO 3 -type ceramics were found to be distributed randomly, and the defect dipoles were formed between the doping ions and the vacancies (oxygen or cation vacancies). No preferential distribution of doped ions was found in the above materials because of the smaller size difference between the two substitutions and the screen effect of the oxygen ion in the center of the nearest neighboring B-sites …”

Section: Introductionmentioning

confidence: 99%

Defect Engineering of Lead-Free Piezoelectrics with High Piezoelectric Properties and Temperature-Stability

Feng

et al. 2016

ACS Appl. Mater. Interfaces

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The high piezoelectricity of ABO3-type lead-free piezoelectric materials can be achieved with the help of either morphotropic phase boundary (MPB) or polymorphic phase transition (PPT). Here, we propose a new defect engineering route to the excellent piezoelectric properties, in which doped smaller acceptor and donor ions substituting bivalent A-sites are utilized to bring local lattice distortion and lower symmetry. A concrete paradigm is presented, (Li-Al) codoped BaTiO3 perovskite, that exhibits a largely thermo-stable piezoelectric constant (>300 pC/N) and huge mechanical quality factor (>2000). A systematic analysis including theoretical analysis and simulation results indicates that the Li(+) and Al(3+) ions are inclined to occupy the neighboring A-sites in the lattice and constitute a defect dipole (ionic pairs). The defect dipoles possess a kind of dipole moment which tends to align directionally after thermo-electric treatment. A mechanism related to the defect symmetry principle, phase transition, and defect migration is proposed to explain the outstanding piezoelectric properties. The present study opens a new development window for excellent piezoelectricity and provides a promising route to the potential utilization of lead-free piezoelectrics in high power applications.

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Phase transition and piezoelectric, ferromagnetic response of B-site (Co, Nb) modified BaTiO3 ceramics

Cited by 18 publications

References 27 publications

Structural, Electrical, Magnetic and Optical Properties of BaTi1-x(Ni1/2Nb1/2)xO3 Ceramics

Structural, Electrical, Magnetic and Optical Properties of BaTi1-x(Ni1/2Nb1/2)xO3 Ceramics

Impact of quenched random fields on the ferroelectric-to-relaxor crossover in the solid solution (1−x)BaTiO3−xDyFeO3<

Defect Engineering of Lead-Free Piezoelectrics with High Piezoelectric Properties and Temperature-Stability

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Phase transition and piezoelectric, ferromagnetic response of B-site (Co, Nb) modified BaTiO3 ceramics

Cited by 18 publications

References 27 publications

Structural, Electrical, Magnetic and Optical Properties of&nbsp;BaTi1-x(Ni1/2Nb1/2)xO3 Ceramics

Structural, Electrical, Magnetic and Optical Properties of&nbsp;BaTi1-x(Ni1/2Nb1/2)xO3 Ceramics

Impact of quenched random fields on the ferroelectric-to-relaxor crossover in the solid solution (1−x)BaTiO3−xDyFeO3<

Defect Engineering of Lead-Free Piezoelectrics with High Piezoelectric Properties and Temperature-Stability

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Product

Resources

About

Structural, Electrical, Magnetic and Optical Properties of BaTi1-x(Ni1/2Nb1/2)xO3 Ceramics

Structural, Electrical, Magnetic and Optical Properties of BaTi1-x(Ni1/2Nb1/2)xO3 Ceramics