Reaction pathways in the solid state synthesis of multiferroic BiFeO3

Bernardo, Mara S.; Jardiel, Teresa; Peiteado, M.; Caballero, A. C.; Villegas, M.

doi:10.1016/j.jeurceramsoc.2011.03.018

Cited by 156 publications

(95 citation statements)

References 38 publications

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“…Many techniques have been employed to synthesize BiFeO 3 powders. There are some reports emphasizing that by using conventional solid-state reaction technique it is difficult to obtain the single BiFeO 3 phase [10,11], while in the chemical routes the synthesis of singlephase bismuth ferrite is more better and simpler [12]. In the solid-state reaction method, there are some reports which highlight the application of nitric acid leaching process on the calcined powders to remove the impurities.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nano-structured Bi1−xBaxFeO3 ceramics with enhanced magnetic and electrical properties

Mostafavi

Ataie

Ahmadzadeh

et al. 2015

Materials Chemistry and Physics

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Bi 1−x Ba x FeO 3 (x=0, 0.2) compounds were synthesized by conventional solid-state reaction method. Structural, morphological, magnetic and ferroelectric properties of the products were investigated systematically by employing X-ray diffraction, field emission scanning electron microscope, vibrating sample magnetometer as well as electrical evaluation techniques, respectively. The XRD results demonstrated distorted rhombohedral BiFeO 3 crystal structure with the space group of R3c. However, 20wt% Ba doped sample underwent a structural phase transition from rhombohedral to distorted pseudo-cubic structure. FESEM images of the BiFeO 3 sample calcined at 850°C showed agglomerated nano-particles with a mean particle size of 60 nm, while Bi 0.8 Ba 0.2 FeO 3 sample showed uniform cubic particles with a mean particle size of 220 nm. For Bi 0.8 Ba 0.2 FeO 3 sample calcined at 850˚C, an anomaly in permittivity was observed in the vicinity of 370˚C which is around the Neel temperature of bismuth ferrite and is in agreement with the recent reports.

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Section: Introductionmentioning

confidence: 99%

Synthesis of nano-structured Bi1−xBaxFeO3 ceramics with enhanced magnetic and electrical properties

Mostafavi

Ataie

Ahmadzadeh

et al. 2015

Materials Chemistry and Physics

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“…Hence, it was concluded that at 600°C, BFO phase cannot be supposed to have high crystallinity. Along with the formation of primary phase of BFO (BiFeO 3 ), secondary phase and ternary phases were also emerged (Singh et al 2008;Perejon et al 2014;Bernardo et al 2011) as a function of annealing temeparture.…”

Section: Methodsmentioning

confidence: 98%

Mixed-phase bismuth ferrite nanoflake electrodes for supercapacitor application

et al. 2015

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Nanoflake bismuth ferrite thin film was synthesized by means of electrodeposition technique at room temperature. The morphology and phase evaluation of the synthesized electrode were analyzed using scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and surface wettability techniques. Specifically, the bismuth ferrite nanoflake electrode exhibited high specific capacitance of 72.2 F g -1 at a current density of 1 A g -1 , and high rate capability with 37 % retention of capacitance even up to 20A g -1 , and excellent cycling stability with 82.8 % retention of the initial capacitance after 1500 charge/discharge cycles, supporting that the bismuth ferrite thin-film electrode could be a potential candidate for supercapacitor application.

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“…17 Extensive experimental observations showed that this trace secondary β-Bi 2 O 3 -isostructured phase can be attributed to incomplete solid state reaction because the diffusion length of iron ions is much shorter than that of bismuth ions and that it can be removed by completing solid state reaction through optimizing powder processing and sintering conditions. 19,24 For the BF-BZT-PT ceramics showed in Fig. 1, frequency dependent dielectric constant ε r and loss tanδ were measured at room temperature and presented in Fig.…”

Section: A Structural and Dielectric Characterizationsmentioning

confidence: 99%

Residual tensile stresses and piezoelectric properties in BiFeO3-Bi(Zn1/2Ti1/2)O3-PbTiO3 ternary solid solution perovskite ceramics

Zheng

2016

AIP Advances

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For low dielectric loss perovskite-structured (1-x-y)BiFeO3-xBi(Zn1/2Ti1/2)O3-yPbTiO3 (BF-BZT-PT) (x = 0.04-0.15 and y = 0.15-0.26) ceramics in rhombohedral/tetragonal coexistent phase, structural phase transitions were studied using differential thermal analyzer combined with temperature-dependent dielectric measurement. Two lattice structural phase transitions are disclosed in various BF-BZT-PT perovskites, which is different from its membership of BiFeO3 exhibiting just one lattice structural phase transition at Curie temperature TC= 830oC. Consequently, residual internal tensile stresses were revealed experimentally through XRD measurements on ceramic pellets and counterpart powders, which are reasonably attributed to special structural phase transition sequence of BF-BZT-PT solid solution perovskites. Low piezoresponse was observed and argued extrinsically resulting from residual tensile stresses pinning ferroelectric polarization switching. Post-annealing and subsequent quenching was found effective for eliminating residual internal stresses in those BZT-less ceramics, and good piezoelectric property of d33 ≥ 28 pC/N obtained for 0.70BF-0.08BZT-0.22PT and 0.05 wt% MnO2-doped 0.70BF-0.04BZT-0.26PT ceramics with TC ≥ 640oC, while it seemed no effective for those BZT-rich BF-BZT-PT ceramics with x = 0.14 and 0.15 studied here.

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Reaction pathways in the solid state synthesis of multiferroic BiFeO3

Cited by 156 publications

References 38 publications

Synthesis of nano-structured Bi1−xBaxFeO3 ceramics with enhanced magnetic and electrical properties

Synthesis of nano-structured Bi1−xBaxFeO3 ceramics with enhanced magnetic and electrical properties

Mixed-phase bismuth ferrite nanoflake electrodes for supercapacitor application

Residual tensile stresses and piezoelectric properties in BiFeO3-Bi(Zn1/2Ti1/2)O3-PbTiO3 ternary solid solution perovskite ceramics

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