Enhanced polarization and magnetization in multiferroic (1-x)BiFeO3-xSrTiO3 solid solution

Ma, Zhihua; Tian, Zhaoming; Li, J.Q.; Wang, C.H.; Huo, Siqi; Duan, H. N.; Yuan, Songliu

doi:10.1016/j.solidstatesciences.2011.10.008

Cited by 89 publications

(35 citation statements)

References 25 publications

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“…As the T s increases, the structure of the BFO‐BT‐BA‐0.01 ceramics changes from rhombohedral to the coexistence of rhombohedral and orthorhombic phases. In BFO‐SrTiO 3 and BFO‐BT materials , the similar correlation between crystal symmetry and ferromagnetism has also been reported.…”

Section: Resultssupporting

confidence: 67%

Structure, ferroelectric, ferromagnetic, and piezoelectric properties of Al-modified BiFeO₃-BaTiO₃multiferroic ceramics

Zhou

Zheng

et al. 2014

Phys. Status Solidi A

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0.725BiFe1−xAlxO3–0.275BaTiO3 + 1 mol% MnO2 ceramics were prepared by a conventional ceramic technique. The effects of Al doping and sintering temperature on microstructure, piezoelectricity and magnetism of the ceramics were studied. The crystalline structures of BFO‐BT‐BA‐x ceramics sintered at 970 °C for 2 h evolve from rhombohedral structure at x = 0 to the coexistence of rhombohedral structure and orthorhombic phases at x = 0.01–0.03 and finally to orthorhombic phases at x > 0.03. The critical sintering temperature is 970 °C. For the ceramics with x = 0.01 sintered at/above 970 °C, large grains, good densification, high resistivity, and enhanced ferromagnetic properties are obtained. The ceramic with x = 0.01 sintered at 970 °C possesses high resistivity (∼109 Ω cm) and good piezoelectric properties (d33 = 138 pC N−1, kp = 32.7%). Al doping decreases the ferromagnetic properties of the ceramics, while the increase in the sintering temperature enhances the ferromagnetic properties of the ceramics.

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Section: Resultssupporting

confidence: 67%

Structure, ferroelectric, ferromagnetic, and piezoelectric properties of Al-modified BiFeO₃-BaTiO₃multiferroic ceramics

Zhou

Zheng

et al. 2014

Phys. Status Solidi A

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“…It can be seen that as measuring electric field increases, the P-E loops of the ceramics become gradually saturated and well-developed and both P r and E c increase. 1,3,18,22 This may be attributed to the changes in the bond angle of Fe-O-Fe in BiFeO 3 caused by the distortion created by the dopt of other ions (e.g., Ba, Na, Sr, Ti, etc.). 17,24,45,46 This should be ascribed to the better crystallization, higher density, and lower leakage current of the ceramics.…”

Section: Resultsmentioning

confidence: 99%

Structure, Ferroelectric, Piezoelectric, and Ferromagnetic Properties of BiFeO₃‐BaTiO₃‐Bi_0.5Na_0.5TiO₃ Lead‐Free Multiferroic Ceramics

Jiang

Lam

et al. 2014

J. Am. Ceram. Soc.

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Lead‐free multiferroic ceramics of BiFeO3‐BaTiO3‐Bi0.5Na0.5TiO3 have been prepared by a conventional ceramic technique. The microstructure, multiferroic, and piezoelectric properties of the ceramics have been studied. The ceramics sintered at 1000°C for 2 h possess a pure perovskite structure and a morphotropic phase boundary of rhombohedral and tetragonal phases is formed at x = 0.02. After the addition of Bi0.5Na0.5TiO3, two dielectric anomalies are observed at high temperatures (Tm ~ 510°C–570°C and T2 ~ 720°C). The phase transition around Tm becomes wider gradually with increasing x. The ferroelectricity, piezoelectricity, and ferromagnetism of the ceramics are significantly improved after the addition of Bi0.5Na0.5TiO3. High resistivity (~1.3 × 109 Ω·cm), strong ferroelectricity (Pr = 27.4 μC/cm2), good piezoelectricity (d33 =140 pC/N, kp = 31.4%), and weak magnetic properties (Mr =0.19 emu/g) are observed.

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“…The occurrence of a proper P-E hysteresis loop for (Bi 0.5 Li 0.5 )(Fe 0.5 Ta 0.5 )O 3 is highly consistent with reports of P-E loops for solid solutions of BiFeO 3 with other ferroelectrics. [56][57][58][59][60][61] …”

Section: Ac Conductivity Studiesmentioning

confidence: 99%

Dielectric and Electrical Properties of BiFeO3–LiTaO3 Systems

Mohanty

Choudhary

2015

Journal of Elec Materi

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Materials of general formula (Bi 1Àx Li x )(Fe 1Àx Ta x )O 3 (x = 0.0, 0.5) were prepared from polycrystalline BiFeO 3 and LiTaO 3 by solid-state reaction. Analysis of the basic structural properties of the materials by room-temperature x-ray diffraction revealed the formation of single-phase tetragonal crystals for (Bi 0.5 Li 0.5 )(Fe 0.5 Ta 0.5 )O 3 . Scanning electron micrographs confirmed the polycrystalline nature of the materials. The microstructure of the materials comprised uniformly distributed grains of unequal size. Studies of the temperature-frequency dependence of dielectric did not reveal any dielectric anomaly or phase transition in the temperature range studied. The presence of hysteresis loops at room temperature confirmed the known ferroelectricity of BiFeO 3 and (Bi 0.5 Li 0.5 )(Fe 0.5 Ta 0.5 )O 3 . Complex impedance spectroscopic analysis revealed the materials had negative temperature coefficient of resistance (NTCR)-type behavior. The electrical conductivity and relaxation characteristics of the materials suggested the presence of a thermally activated process, and their values suggested the materials had similar types of conductivity and relaxation species. The frequency dependence of the ac conductivity obeyed Jonscher's universal power law.

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Enhanced polarization and magnetization in multiferroic (1-x)BiFeO3-xSrTiO3 solid solution

Cited by 89 publications

References 25 publications

Structure, ferroelectric, ferromagnetic, and piezoelectric properties of Al-modified BiFeO₃-BaTiO₃multiferroic ceramics

Structure, ferroelectric, ferromagnetic, and piezoelectric properties of Al-modified BiFeO₃-BaTiO₃multiferroic ceramics

Structure, Ferroelectric, Piezoelectric, and Ferromagnetic Properties of BiFeO₃‐BaTiO₃‐Bi_0.5Na_0.5TiO₃ Lead‐Free Multiferroic Ceramics

Dielectric and Electrical Properties of BiFeO3–LiTaO3 Systems

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Enhanced polarization and magnetization in multiferroic (1-x)BiFeO3-xSrTiO3 solid solution

Cited by 89 publications

References 25 publications

Structure, ferroelectric, ferromagnetic, and piezoelectric properties of Al-modified BiFeO3-BaTiO3multiferroic ceramics

Structure, ferroelectric, ferromagnetic, and piezoelectric properties of Al-modified BiFeO3-BaTiO3multiferroic ceramics

Structure, Ferroelectric, Piezoelectric, and Ferromagnetic Properties of BiFeO3‐BaTiO3‐Bi0.5Na0.5TiO3 Lead‐Free Multiferroic Ceramics

Dielectric and Electrical Properties of BiFeO3–LiTaO3 Systems

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Structure, ferroelectric, ferromagnetic, and piezoelectric properties of Al-modified BiFeO₃-BaTiO₃multiferroic ceramics

Structure, ferroelectric, ferromagnetic, and piezoelectric properties of Al-modified BiFeO₃-BaTiO₃multiferroic ceramics

Structure, Ferroelectric, Piezoelectric, and Ferromagnetic Properties of BiFeO₃‐BaTiO₃‐Bi_0.5Na_0.5TiO₃ Lead‐Free Multiferroic Ceramics