Effect of rare-earth Nd/Sm doping on the structural and multiferroic properties of BiFeO3 ceramics prepared by spark plasma sintering

Wang, Ting; Wang, X.-L.; Ravi, M.; Ma, Qiang

doi:10.1016/j.ceramint.2020.03.061

Cited by 34 publications

(4 citation statements)

References 46 publications

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“…The introduced Sm favors the formation of tetragonal and pseudo‐cubic coexistence phase in PZT; it modifies the vacancy concentration and facilitates domain wall motion 17,18 . This improvement of dielectric and piezoelectric response with a small addition of Sm 3+ on A‐site is also observed in some lead free piezoelectric materials, such as BaTiO 3 , 41,42 BiFeO 3 , 43 (Na 0.5 Bi 0.5 ) 0.94 Ba 0.06 TiO 3 44‐46 and other systems 47,48 . This suggests that the mechanism of at least one contribution to the enhanced properties in Sm‐doped PMN‐PT may not be fundamentally different from other piezoelectric materials.…”

Section: Discussionmentioning

confidence: 73%

The influence of oxygen vacancies on piezoelectricity in samarium‐doped Pb(Mg_1/3Nb_2/3)O₃‐PbTiO₃ ceramics

Borbely

Bell

2021

J Am Ceram Soc

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A study of 0.71Pb(Mg1/3Nb2/3)O3‐0.29PbTiO3 shows that, when it is doped with 2.5% Sm on the A‐site, in addition to an almost threefold increase in piezoelectric charge coefficient and dielectric permittivity, there is a 2 order of magnitude reduction in conductivity, attributed to a decrease in oxygen vacancy concentration. An analysis of the nonlinearity of permittivity with respect to field amplitude shows that both the reversible and irreversible contributions increase significantly with Sm‐doping, with simple models showing that these changes are consistent with a reduction in the concentration of dipolar defects that can inhibit both polarization rotation and domain wall translation. Contrary to the argument that doping increases heterogeneity, there is little change in the diffuseness of the peak in permittivity as a function temperature, whilst there is a 15% increase in spontaneous polarization with Sm addition. Through comparison of the Rayleigh law parameters with those published for other piezoelectric materials, it is concluded that a significant contribution to the observed increase in piezoelectric performance due to Sm‐doping of PMN‐PT is similar in origin to that seen in soft, donor‐doped PZT and other conventional piezoelectric ceramics.

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Section: Discussionmentioning

confidence: 73%

The influence of oxygen vacancies on piezoelectricity in samarium‐doped Pb(Mg_1/3Nb_2/3)O₃‐PbTiO₃ ceramics

Borbely

Bell

2021

J Am Ceram Soc

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“…Figure 1a shows the room temperature XRD patterns of the (n + 1)SrO − nCeO 2 (n = 2) ceramics sintered at 1330-1410 • C for 4 h. All observed XRD diffraction peaks conform to the orthogonal structure of standard PDF cards JCPDS # 89-5546 and JCPDS # 82-2427 [22,23]. Thus, the (n + 1)SrO − nCeO 2 (n = 2) ceramics cannot form a layered solid solution phase while forming a composite-phase ceramic system with the coexistence of a SrCeO 3 phase and a Sr 2 CeO 4 phase; these two main crystalline phases belong to the orthogonal structure of Pmcn (62) and Pbam (55) space group, respectively.…”

Section: Resultsmentioning

confidence: 85%

Phase Structures and Dielectric Properties of (n + 1)SrO − nCeO2 (n = 2) Microwave Ceramic Systems with TiO2 Addition

Liu

et al. 2023

Crystals

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Ti4+-ion-doped (n + 1)SrO − nCeO2 (n = 2) ceramic systems were prepared with the conventional solid-state reaction method, and the effects of the phase structures and compositions, sintering behaviors, microstructures and microwave dielectric properties of these ceramic systems were investigated in detail as a function of TiO2 content. The analytical results of the XRD patterns show that the pure (n + 1)SrO − nCeO2 (n = 2) system is a composite-phase ceramic system with coexisting SrCeO3 and Sr2CeO4 phases (represented as a SrCeO3 + Sr2CeO4 system), which belong to the orthogonal structures of the Pmcn (62) and Pbam (55) space groups, respectively. For the xTiO2-(1 − x) (SrCeO3 + Sr2CeO4) (x = 0.1–0.4) ceramic samples, the secondary phase Sr2TiO4 can also be detected within the range of the investigated components. Meanwhile, the Raman spectroscopy, SEM-EDS, and HRTEM (SAED) analysis results also verified the correctness and consistency of the phase structures and compositions for all the given specimens. In addition, complex impedance spectroscopy was used to detect the conductive behavior of these compound ceramic systems, and the calculation results show that the appropriate addition of Ti4+-ions can make the SrCeO3 + Sr2CeO4 system have better thermal stability. The composition of x = 0.2 multiphase structural ceramic sample sintered at 1330 °C for 4 h has a near zero τf value of ~−4.6 ppm/°C, a moderate εr of ~40.3 and a higher Q × f~44,020 GHz (at 6.56 GHz). The relatively superior-performing ceramics developed in this work are expected to provide a promising microwave dielectric material for communication components.

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“…Several studies have shown that doping the A-site in BFO with different substituents could result in decrease of oxygen vacancies and improvement of the structure and magnetoelectric properties by suppressing the volatilization of bismuth (Lee et al, 2005;Yuan et al, 2006;Yoneda et al, 2007;Cheng et al, 2009;Troyanchuk et al, 2009). A-site doping with alkaline-earth ions such as Ca 2+ Marzouk et al, 2020;Tahir et al, 2020), Sr 2+ (Bhushan et al, 2010;Dhir et al, 2018), Ba 2+ (Wang et al, 2006;Soltani et al, 2016;Makhdoom et al, 2019) and rare-earth ions such as La 3+ , Nd 3+ , Ce 3+ and Tb 3+ (Huang et al, 2006;Wang and Nan, 2008;Yu et al, 2008;Lahmar et al, 2009;Liu et al, 2010;Dai et al, 2016;Koval et al, 2017;Yotburut et al, 2017;Wang et al, 2020) have mainly been studied so far. Substitution of divalent alkaline-earth ions have especially been proven effective in improving the ferroelectric Modification in Structural, Morphological, Magnetic….. and ferromagnetic properties of BFO.…”

Section: Introductionmentioning

confidence: 99%

Modification in Structural, Morphological, Magnetic and Ferroelectric Properties of Calcium-Doped Bismuth Ferrite Nanoparticles

et al. 2020

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The structural, morphological, magnetic and ferroelectric properties of calcium (Ca) doped bismuth ferrite (BFO) synthesized using a sol-gel method were studied. X-ray diffraction (XRD) analysis followed by Rietveld refinement revealed the lattice distortion of BFO after doping with 6% and 8% Ca. This also led to the reduction in particle size by creating oxygen vacancies, which was observed from the surface morphology using Field Emission Scanning Electron Microscopy (FESEM). The Magnetic properties exhibited some enhancements in saturation magnetization when the particle size was near a limiting value. The reduction in the coercive magnetic field with the increase in dopant concentration was also evident from the M-H hysteresis loop measured by Vibrating Sample Magnetometer (VSM). The Ferroelectric P-E hysteresis loop exhibited an increased symmetry in the hysteresis loop and increase in the polarization with the increase in %Ca. The 8% Ca doped BFO exhibited an incomplete saturation in the hysteresis loop and was evident to exhibit leakage current characteristics. Journal of Engineering Science 11(1), 2020, 123-131

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Effect of rare-earth Nd/Sm doping on the structural and multiferroic properties of BiFeO3 ceramics prepared by spark plasma sintering

Cited by 34 publications

References 46 publications

The influence of oxygen vacancies on piezoelectricity in samarium‐doped Pb(Mg_1/3Nb_2/3)O₃‐PbTiO₃ ceramics

The influence of oxygen vacancies on piezoelectricity in samarium‐doped Pb(Mg_1/3Nb_2/3)O₃‐PbTiO₃ ceramics

Phase Structures and Dielectric Properties of (n + 1)SrO − nCeO2 (n = 2) Microwave Ceramic Systems with TiO2 Addition

Modification in Structural, Morphological, Magnetic and Ferroelectric Properties of Calcium-Doped Bismuth Ferrite Nanoparticles

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Effect of rare-earth Nd/Sm doping on the structural and multiferroic properties of BiFeO3 ceramics prepared by spark plasma sintering

Cited by 34 publications

References 46 publications

The influence of oxygen vacancies on piezoelectricity in samarium‐doped Pb(Mg1/3Nb2/3)O3‐PbTiO3 ceramics

The influence of oxygen vacancies on piezoelectricity in samarium‐doped Pb(Mg1/3Nb2/3)O3‐PbTiO3 ceramics

Phase Structures and Dielectric Properties of (n + 1)SrO − nCeO2 (n = 2) Microwave Ceramic Systems with TiO2 Addition

Modification in Structural, Morphological, Magnetic and Ferroelectric Properties of Calcium-Doped Bismuth Ferrite Nanoparticles

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The influence of oxygen vacancies on piezoelectricity in samarium‐doped Pb(Mg_1/3Nb_2/3)O₃‐PbTiO₃ ceramics

The influence of oxygen vacancies on piezoelectricity in samarium‐doped Pb(Mg_1/3Nb_2/3)O₃‐PbTiO₃ ceramics