Phase coexistence and the structure of the morphotropic phase boundary region in (1−x)Bi(Mg1/2Zr1/2)O3–xPbTiO3 piezoceramics

Pandey, Rishikesh; Tiwari, Ashish; Upadhyay, Alka; Singh, Akhilesh Kumar

doi:10.1016/j.actamat.2014.05.023

Cited by 25 publications

(20 citation statements)

References 42 publications

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“…Unlike other well‐known MPB systems, there is no monoclinic phase in the MPB region of BMZ‐PT . We have shown that after poling planar electromechanical coupling coefficient ( k P ) is observed for the cubic composition as well ( k P ~ 0.21) . Appearance of piezoelectric response in cubic composition after poling has been speculated to be due to an electric field‐induced phase transition as no piezoelectric response can be present in cubic symmetry .…”

Section: Introductionmentioning

confidence: 73%

“…We have shown that after poling planar electromechanical coupling coefficient ( k P ) is observed for the cubic composition as well ( k P ~ 0.21) . Appearance of piezoelectric response in cubic composition after poling has been speculated to be due to an electric field‐induced phase transition as no piezoelectric response can be present in cubic symmetry . In this paper, we have investigated this aspect of possible electric field‐induced phase transition.…”

Section: Introductionmentioning

confidence: 94%

“…In recent years, there is a great demand to develop lead free piezoelectric materials due to toxicity of Pb . Recently, many bismuth‐based solid solutions with reduced Pb‐concentration such as (1‐ x )BiScO 3 ‐ x PbTiO 3 [BS‐PT], (1‐ x )Bi(Mg 1/2 Zr 1/2 )O 3 ‐ x PbTiO 3 [BMZ‐PT], (1‐ x )Bi(Ni 1/2 Ti 1/2 )O 3 ‐ x PbTiO 3 [BNT‐PT], (1‐ x )Bi(Mg 1/2 Ti 1/2 )O 3 ‐ x PbTiO 3 [BMT‐PT], Bi 1/2 Na 1/2 TiO 3 etc. and solid solutions based on them, have been investigated for piezoelectric applications and structure‐property correlations close to MPB.…”

Section: Introductionmentioning

confidence: 99%

“…The BS‐PT system has been shown to exhibit high T C ~ 450°C, k P ~ 0.56 and d 33 ~ 440 pC/N, but due to high cost of scandium oxide, it is not industrially viable alternative of PZT . Recently, we have reported that the BMZ‐PT exhibits MPB and shows cubic structure with space group Pm

\overset{3}{true}

m for the compositions with x ˂0.57, tetragonal structure with space group P 4 mm for the compositions with x ˃0.59, and coexistence of cubic (space group Pm

\overset{3}{true}

m ) and tetragonal (space group P 4 mm ) structures for intermediate compositions . Unlike other well‐known MPB systems, there is no monoclinic phase in the MPB region of BMZ‐PT .…”

Section: Introductionmentioning

confidence: 99%

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Origin of ferroelectric P‐E loop in cubic compositions and structure of poled (1‐x)Bi(Mg_1/2Zr_1/2)O₃‐xPbTiO₃ piezoceramics

2017

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Structural analysis of electrically poled samples of polycrystalline, (1-x)Bi(Mg 1/2 Zr 1/2 )O 3 -xPbTiO 3 piezoceramics across morphotropic phase boundary reveals electric field-induced cubic to tetragonal phase transition and significant domain reorientation in tetragonal and two-phase compositions. The c-axis domain elongation is observed for tetragonal compositions after poling. The morphotropic phase boundary composition, having coexisting cubic and tetragonal phases in the unpoled state, exhibits alteration in relative proportion of the two phases, in addition to domain extension and reorientation along c-axis. For the morphotropic phase boundary composition, the tetragonality (c/a) is enhanced with significantly large c-axis strain (~0.92%) in tetragonal phase after poling. Origin of ferroelectric P-E loop in cubic compositions is linked with the electric field-induced phase transition. K E Y W O R D S domains, ferroelectricity/ferroelectric materials, hysteresis, orientation, piezoelectric materials/properties

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Section: Introductionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

\overset{3}{true}

m for the compositions with x ˂0.57, tetragonal structure with space group P 4 mm for the compositions with x ˃0.59, and coexistence of cubic (space group Pm

\overset{3}{true}

m ) and tetragonal (space group P 4 mm ) structures for intermediate compositions . Unlike other well‐known MPB systems, there is no monoclinic phase in the MPB region of BMZ‐PT .…”

Section: Introductionmentioning

confidence: 99%

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Origin of ferroelectric P‐E loop in cubic compositions and structure of poled (1‐x)Bi(Mg_1/2Zr_1/2)O₃‐xPbTiO₃ piezoceramics

2017

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“…[32][33][34][35][36] The relaxor behavior has been attributed to the presence of polar nanoregions (PNRs) in mixed perovskites such as the BT-BZT material. [32][33][34][35][36][37] Chemical substitution introduces dipolar entities in these perovskites which are barred from having any well-defined dipole moments at high temperatures due to thermal fluctuations. On cooling however, PNRs are formed which grow as the temperature decreases.…”

Section: Resultsmentioning

confidence: 99%

Resistivity Enhancement and Transport Mechanisms in (1 − x)BaTiO₃–xBi(Zn_1/2Ti_1/2)O₃ and (1 − x)SrTiO₃–xBi(Zn_1/2Ti_1/2)O₃

Kumar

Cann

2015

J. Am. Ceram. Soc.

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Ceramics of composition (1−x)BaTiO3–xBi(Zn1/2Ti1/2)O3 (BT‐BZT) were prepared by solid‐state synthesis; they have been shown to exhibit excellent properties suited for high‐temperature dielectric applications. The X‐ray diffraction data showed a single‐phase perovskite structure for all the compositions prepared (x ≤ 0.1 BZT). The compositions with less than 0.075 BZT exhibited tetragonal symmetry at room temperature and pseudo‐cubic symmetry above it. Most notably, a significant improvement in insulation properties was measured with the addition of BZT. Both low‐field AC impedance and high‐field direct DC measurements indicated an increase in resistivity of at least two orders of magnitude at 400°C with the addition of just 0.03 BZT (~107 Ω‐cm) into the solid solution as compared to pure BT (~105 Ω‐cm). This effect was also evident in dielectric loss data, which remained low at higher temperatures as the BZT content increased. In conjunction with band gap measurements, it was also concluded that the conduction mechanism transitioned from extrinsic for pure BT to intrinsic for 0.075 BZT suggesting a change in the fundamental defect equilibrium conditions. It was also shown that this improvement in insulation properties was not limited to BT‐BZT, but could also be observed in the paraelectric SrTiO3–BZT system.

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Stabilities and piezoelectric properties of morphotropic phase boundary composition 0.2Pb(Mg1/3Nb2/3)O3–0.38PbZrO3–0.42PbTiO3 ternary piezoceramics

Upadhyay

Jeon

2019

J Mater Sci

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Phase coexistence and the structure of the morphotropic phase boundary region in (1−x)Bi(Mg1/2Zr1/2)O3–xPbTiO3 piezoceramics

Cited by 25 publications

References 42 publications

Origin of ferroelectric P‐E loop in cubic compositions and structure of poled (1‐x)Bi(Mg_1/2Zr_1/2)O₃‐xPbTiO₃ piezoceramics

Origin of ferroelectric P‐E loop in cubic compositions and structure of poled (1‐x)Bi(Mg_1/2Zr_1/2)O₃‐xPbTiO₃ piezoceramics

Resistivity Enhancement and Transport Mechanisms in (1 − x)BaTiO₃–xBi(Zn_1/2Ti_1/2)O₃ and (1 − x)SrTiO₃–xBi(Zn_1/2Ti_1/2)O₃

Stabilities and piezoelectric properties of morphotropic phase boundary composition 0.2Pb(Mg1/3Nb2/3)O3–0.38PbZrO3–0.42PbTiO3 ternary piezoceramics

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Phase coexistence and the structure of the morphotropic phase boundary region in (1−x)Bi(Mg1/2Zr1/2)O3–xPbTiO3 piezoceramics

Cited by 25 publications

References 42 publications

Origin of ferroelectric P‐E loop in cubic compositions and structure of poled (1‐x)Bi(Mg1/2Zr1/2)O3‐xPbTiO3 piezoceramics

Origin of ferroelectric P‐E loop in cubic compositions and structure of poled (1‐x)Bi(Mg1/2Zr1/2)O3‐xPbTiO3 piezoceramics

Resistivity Enhancement and Transport Mechanisms in (1 − x)BaTiO3–xBi(Zn1/2Ti1/2)O3 and (1 − x)SrTiO3–xBi(Zn1/2Ti1/2)O3

Stabilities and piezoelectric properties of morphotropic phase boundary composition 0.2Pb(Mg1/3Nb2/3)O3–0.38PbZrO3–0.42PbTiO3 ternary piezoceramics

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Origin of ferroelectric P‐E loop in cubic compositions and structure of poled (1‐x)Bi(Mg_1/2Zr_1/2)O₃‐xPbTiO₃ piezoceramics

Origin of ferroelectric P‐E loop in cubic compositions and structure of poled (1‐x)Bi(Mg_1/2Zr_1/2)O₃‐xPbTiO₃ piezoceramics

Resistivity Enhancement and Transport Mechanisms in (1 − x)BaTiO₃–xBi(Zn_1/2Ti_1/2)O₃ and (1 − x)SrTiO₃–xBi(Zn_1/2Ti_1/2)O₃