Magnetic properties of ball-milled SrFe12O19 particles consolidated by Spark-Plasma Sintering

Stingaciu, Marian; Topole, Martin; McGuiness, P.J.; Christensen, Mogens

doi:10.1038/srep14112

Cited by 51 publications

(18 citation statements)

References 30 publications

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“…35,37 For this purpose, milling time was one of the selected processing variables in this study to modify the crystallinity ratio. 38 In accordance with these findings, in this study, nHA-2 was found with 100% crystallinity with the absence of amorphous content, a lower crystallite size, and a higher SSA which is expected to induce better biological responses 39 FIGURE 6. 1 and 2).…”

Section: Modification Of Milling Parameters and Their Importancesupporting

confidence: 84%

“…However, a prolonged ball milling time may adversely affect the degree of crystallinity. 38 In accordance with these findings, in this study, nHA-2 was found with 100% crystallinity with the absence of amorphous content, a lower crystallite size, and a higher SSA which is expected to induce better biological responses 39 FIGURE 6. TGA of different nanoparticles during thermal exposure.…”

Section: Modification Of Milling Parameters and Their Importancesupporting

confidence: 84%

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Synthesis and characterization of biomimetic bioceramic nanoparticles with optimized physicochemical properties for bone tissue engineering

Ebrahimi

Botelho

et al. 2019

J Biomedical Materials Res

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Calcium phosphate bioceramics nanoparticles such as nano‐hydroxyapatite (nHA) and nano‐tricalcium phosphate (nTCP) are the main focus of basic and applied research for bone tissue regeneration. In particular, a combination of these two phases (nHA + nTCP) which refers to as “nano‐biphasic calcium phosphates (nBCP)” is of interest due to the preferred biodegradation nature compared to single‐phase bioceramics. However, the available synthesis processes are challenging and the biomaterials properties are yet to be optimized to mimic the physiochemical properties of the natural nanoscale bone apatite. In this study, a new approach was developed for the production of optimized bioceramic nanoparticles aiming to improve their biomimecity for better biological performances. Nanoparticles were synthesized through a carefully controlled and modified wet mechano‐chemical method combined with a controlled solid‐state synthesis. Different processing variables have been analyzed including; milling parameters, post‐synthesis treatment, and calcination phase. Detailed physicochemical characterizations of nanoparticles revealed higher crystallinity (∼100%), lower crystallite/particle size (58 nm), higher homogeneity, reduced particle agglomeration size (6 μm), and a closer molar ratio (1.8) to biological apatite compared to control and standard samples. Furthermore, the study group was confirmed as calcium‐deficient carbonate‐substituted BCP nanoparticles (nHA/nβ‐TCP: 92/8%). As such, the introduced method can afford an easier and accurate control over nanoparticle physiochemical properties including the composition phase which can be used for better customization of biomaterials for clinical applications. The findings of this article will also help researchers in the further advancement of production strategies of biomaterials. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 1654–1666, 2019.

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Section: Modification Of Milling Parameters and Their Importancesupporting

confidence: 84%

Section: Modification Of Milling Parameters and Their Importancesupporting

confidence: 84%

Synthesis and characterization of biomimetic bioceramic nanoparticles with optimized physicochemical properties for bone tissue engineering

Ebrahimi

Botelho

et al. 2019

J Biomedical Materials Res

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“…The broad and diffuse peaks of Fig. 1 (c-e) once again indicate the tendency of crystalline to amorphous like phase transition [33] of ultrasonically prepared nanoparticles.…”

Section: A Structural Characterizationmentioning

confidence: 93%

Dy doped BiFeO 3 : A bulk ceramic with improved multiferroic properties compared to nano counterparts

Chowdhury

Kamal

Hossain

et al. 2017

Ceramics International

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The synthesis as well as structural, multiferroic and optical characterization of Dy doped BiFeO3 multiferroic ceramic are presented. Bulk polycrystalline Bi0.9Dy0.1FeO3 sample is synthesized by solid state reaction, while their nano counterparts are prepared using ultrasonic probe sonication technique.Significant improvement of phase purity in the as synthesized samples is observed after the doping of Dy both in bulk Bi0.9Dy0.1FeO3 sample and corresponding nanoparticles as evidenced from Rietveld refinement. Magnetization measurements using SQUID magnetometer exhibit enhanced magnetic properties for Dy doped bulk Bi0.9Dy0.1FeO3 ceramic compared to their nanostructured counterparts as well as undoped BiFeO3. Within the applied field range, saturation polarization is observed for Bi0.9Dy0.1FeO3 bulk ceramic only. As a result, intrinsic ferroelectric behavior is obtained just for this arXiv:1706.10226v1 [cond-mat.mes-hall]

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“…As a final note, the SPS heating and pressing not only permits to decrease the crystallization/sintering temperatures of hexaferrites and to tailor their magnetic properties, but it also prevents the formation of secondary phases such as α-Fe 2 O 3 [68]. On the other hand, the reductive atmosphere in SPS can lead to hexaferrite decomposition and the subsequent magnetite formation (reduction of Fe 3+ to Fe 2+ ) [69]. Nevertheless, a recent study has shown that such a Fe 3 O 4 secondary phase can be suppressed by using protecting discs of aluminum oxide between the graphite mold and the samples [66].…”

Section: Sps Ofmentioning

confidence: 99%

Ferrite Nanostructures Consolidated by Spark Plasma Sintering (SPS)

Breitwieser¹,

Acevedo²,

Ammar³

et al. 2017

Nanostructured Materials - Fabrication to Applications

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Ferrites are a well-known class of ferrimagnetic materials. In the form of nanoparticles (NPs), they exhibit novel and fascinating properties, leading to an extremely wide variety of applications in electronics, biomedical and environmental fields. These applications result from nanoscale effects on physical properties, particularly magnetic properties. For applications in electronic devices, however, a high-density, consolidated body, with very fine grains is needed, in order to retain the nanoscale properties. To our knowledge, spark plasma sintering (SPS) is the only method permitting a full densification with final grain size in the nanometer range. In this review, we examine the SPS method as applied to ferrites and, in particular, the effects of SPS parameters on the final nanostructures obtained. Due to their technological impact, we also discuss the SPS fabrication of hybrid multiferroic nanostructures composed of a ferrite and a ferroelectric phase.

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Magnetic properties of ball-milled SrFe12O19 particles consolidated by Spark-Plasma Sintering

Cited by 51 publications

References 30 publications

Synthesis and characterization of biomimetic bioceramic nanoparticles with optimized physicochemical properties for bone tissue engineering

Synthesis and characterization of biomimetic bioceramic nanoparticles with optimized physicochemical properties for bone tissue engineering

Dy doped BiFeO 3 : A bulk ceramic with improved multiferroic properties compared to nano counterparts

Ferrite Nanostructures Consolidated by Spark Plasma Sintering (SPS)

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