Mass spectrometric investigation of vaporization in the Bi2O3-Fe2O3 system

Mikhailov, A. V.; Грибченкова, Н. А.; Kolosov, E. N.; Kaul, A. R.; Alikhanyan, A. S.

doi:10.1134/s0036024411010183

Cited by 20 publications

(5 citation statements)

References 1 publication

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“…Hardy et al reported that BiFeO 3 crystallization begins around 400 °C, an increase in the reaction temperature of up to 500–600 °C may yield single‐phase BiFeO 3 . In contrast, Mikhailov et al concluded, after thermodynamic calculations, that the synthesis temperature to produce single‐phase BiFeO 3 should not be above 727 °C, that is, above the temperature of the α → Bi 2 O 3 transition, as the high entropy of the disordered β‐Bi 2 O 3 sharply decreases the Gibbs energy of bismuth ferrite formation. The suggested optimal synthesis temperature is around 720 °C.…”

Section: Resultsmentioning

confidence: 97%

Tuning the Structural and the Magnetic Properties of BiFeO₃ Magnetic Nanoparticles

Makridis

Myrovali

Sakellari

et al. 2020

Physica Status Solidi (b)

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The explosive expansion of multiferroics literature in recent years demonstrates the fast‐growing interest in this field. Although bismuth ferrite is one of the most extensively investigated multiferroic compounds combining magnetoelectric, i.e., antiferromagnetic and ferroelectric features at room temperature, the challenge of producing single‐phase particles remains because the role of multiple synthetic parameters must be unraveled. Herein, the facile synthetic route of aqueous coprecipitation is selected as the first synthetic step, followed by a 700 °C annealing stage to synthesize bismuth ferrite nanoparticles (NPs). This article aims to clarify the influence of ingredients such as precursors: base solution, acid and the Bi/Fe molar ratio, and the role of synthetic parameters such as pH level and reaction temperature toward higher yields of purer crystalline phases. Both structural and magnetic features' performance outline the significance of both stages on forming BiFeO3 single‐phase NPs with the absence of any secondary bismuth oxide phases, a crucial issue for multiferroic features at room temperature.

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Section: Resultsmentioning

confidence: 97%

Tuning the Structural and the Magnetic Properties of BiFeO₃ Magnetic Nanoparticles

Makridis

Myrovali

Sakellari

et al. 2020

Physica Status Solidi (b)

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“…The exothermic peak at around 285°C is attributed to the Bi 2 O 3 and Fe 2 O 3 phases formation. In addition, the mass loss owing to the decomposition of Bi(OH) 3 and Fe(OH) 3 into a metastable phase corresponds to this peak 38,39 . Figure 3B(b‐d) shows the DSC curves for PLA, PLA/BFO blend, and PLA/BFO (line) scaffolds.…”

Section: Resultsmentioning

confidence: 99%

Effect of electric stimulus on human adipose‐derived mesenchymal stem cells cultured in 3D‐printed scaffolds

Bedir

Ulag

Aydogan

et al. 2020

Polymers for Advanced Techs

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Electrical stimulation has shown great potential for nerve regeneration processes. This makes it attractive to use electrically active materials in the neural scaffold. In this paper, bismuth ferrite (BFO) nanoparticles were synthesized via co‐precipitation method and incorporated to 10 wt% polylactic acid (PLA) in chloroform to obtain 3D‐printed PLA/BFO biocomposites. The crystallinity of BFO nanoparticles was confirmed by XRD, and we studied its chemical structure with FTIR, as well as the mechanical properties of the 3D‐printed composites. in vitro studies show that 3D‐printed scaffolds have no cytotoxicity and support the proliferation of human adipose‐derived mesenchymal stem cells (hADMSCs). Furthermore, 3D scaffolds embedded with BFO shows the highest cell viability relative to pristine PLA and BFO‐lined PLA scaffolds. A 48 hours electrical stimulation on the hADMSC cultured inside the 3D‐printed BFO‐lined PLA scaffolds indicates that stimulated cells are aligned toward the BFO line. These results could indicate the potential of BFO for directing cells toward damaged tissues.

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“…There is a possibility that the islands could be formed under the presence of liquid phase. According to the binary phase diagram of Bi 2 O 3 and Fe 2 O 3 , the melting point of BiFeO 3 is 1216K and that of Bi 25 FeO 40 is bellow 1023K [4]. According to previous report, BiFeO 3 decomposed to Bi 25 FeO 40 at 873K [5].…”

Section: Methodsmentioning

confidence: 92%

Effects of Annealing Process on the Structure of Mn-Doped BiFeO<sub>3</sub> Thin Films

Mizugai

Kiguchi

Usami

et al. 2013

KEM

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The effects of processing conditions on the morphologies of Mn-doped BiFeO3thin films have been investigated. BiFeO3thin films were prepared on a SrTiO3(001) substrate by CSD method. BiFeO3grew epitaxially on SrTiO3and Bi2Fe4O9has also orientation relationships with BiFeO3. It was found that the formation of Bi2Fe4O9was promoted in an O2atmosphere. Island morphologies were observed in the BiFeO3thin films after post-annealing at 1023K both in N2and O2atmospheres. The formation of the islands is promoted in an O2atmosphere.

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Mass spectrometric investigation of vaporization in the Bi2O3-Fe2O3 system

Cited by 20 publications

References 1 publication

Tuning the Structural and the Magnetic Properties of BiFeO₃ Magnetic Nanoparticles

Tuning the Structural and the Magnetic Properties of BiFeO₃ Magnetic Nanoparticles

Effect of electric stimulus on human adipose‐derived mesenchymal stem cells cultured in 3D‐printed scaffolds

Effects of Annealing Process on the Structure of Mn-Doped BiFeO<sub>3</sub> Thin Films

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Mass spectrometric investigation of vaporization in the Bi2O3-Fe2O3 system

Cited by 20 publications

References 1 publication

Tuning the Structural and the Magnetic Properties of BiFeO3 Magnetic Nanoparticles

Tuning the Structural and the Magnetic Properties of BiFeO3 Magnetic Nanoparticles

Effect of electric stimulus on human adipose‐derived mesenchymal stem cells cultured in 3D‐printed scaffolds

Effects of Annealing Process on the Structure of Mn-Doped BiFeO<sub>3</sub> Thin Films

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Tuning the Structural and the Magnetic Properties of BiFeO₃ Magnetic Nanoparticles

Tuning the Structural and the Magnetic Properties of BiFeO₃ Magnetic Nanoparticles