Nanofibers of barium strontium titanate (BST) by sol–gel processing and electrospinning

Maensiri, Santi; Nuansing, Wiwat; Klinkaewnarong, Jutharatana; Laokul, Paveena; Khemprasit, Jinda

doi:10.1016/j.jcis.2005.11.005

Cited by 78 publications

(48 citation statements)

References 41 publications

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“…The exothermic peaks, which can be observed at 360°C, 470°C and 625°C, are likely due to the decomposition of organic groups from the organometallic precursor and its intermediate phases (BaCO 3 ) [4,17,18]. Another exothermic peak above 725°C may correspond to the formation of metal oxide phase of perovskite BT [17]. The TG/DSC results reveal that most of the organic groups vanished at about 750°C.…”

Section: Resultsmentioning

confidence: 93%

“…The endothermic peaks in the DSC curve, which can be observed at 105°C and 300°C, are probably due to the evaporation of water and the polymer (PVP) decomposition [4,17,18]. The exothermic peaks, which can be observed at 360°C, 470°C and 625°C, are likely due to the decomposition of organic groups from the organometallic precursor and its intermediate phases (BaCO 3 ) [4,17,18]. Another exothermic peak above 725°C may correspond to the formation of metal oxide phase of perovskite BT [17].…”

Section: Resultsmentioning

confidence: 99%

“…The asymmetric peaks of 31° and 45° of 2θ, which are indicative of a tetragonal perovskite phase, are deconvoluted and subsequently identified as the mixtures of the (101) and (110) peaks and the (002) and (200) peaks, respectively [2]. The XRD patterns may be attributed to tetragonal perovskite structure (JCPDS-05-0626) [1][2][3]17,18]. Figure 4 shows the FR-IR measurements of the BT formation.…”

Section: Resultsmentioning

confidence: 99%

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Effect of calcination temperature and atmosphere on crystal structure of BaTiO3 nanofibers

Lee

Cho

et al. 2010

Met. Mater. Int.

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Barium titanate (BaTiO3, BT) nanofibers with a diameter range of 160 nm to 300 nm were prepared by drying electrospun BT/polyvinylpyrrolidone (BT/PVP) composite fibers for 1 h at 80°C in vacuum with a subsequent calcination in air for 1 h at a temperature range of 650°C to 750°C. The morphology and crystal structure of calcined BT nanofibers were characterized with the aid of XRD, FT-IR, SEM, and TEM. The XRD and FR-IR measurements confirm that BT nanofibers with a diameter of about 160 nm and a tetragonal perovskite structure were present in the electrospun fibers after calcination for 1 h at 750°C. The FR-IR analysis of the BT fibers reveals that the intensity level of the O-H stretching vibration bands (at 3430 cm −1 and 1425 cm −1 ) become weaker as the calcination temperature is increased and that a broad band at 570 cm -1 , which represents the Ti-O vibration, appears sharper and narrower after calcination at 750°C due to the formation of metal oxide bonds. In contrast, BT fibers prepared by a refluxing process in a nitrogen atmosphere show a dramatic change in crystal structure: the tetragonal structure changes to a cubic perovskite structure, probably due to the suppression of carbonate contamination. Thus, the calcination temperature and atmosphere appear to have a significant influence on the crystal structure of BT.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Effect of calcination temperature and atmosphere on crystal structure of BaTiO3 nanofibers

Lee

Cho

et al. 2010

Met. Mater. Int.

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“…Poly(vinyl pyrrolidone) (PVP) has been extensively used in the production of fibers via electrospinning technique [6][7][8][9]. A systematic study was carried out to obtain PVP fibers by blow-spinning technique and evaluated the samples in terms of their morphology by parameters such as the diameter size distribution, homogeneity, and shape of fibers.…”

Section: Introductionmentioning

confidence: 99%

“…A systematic study was carried out to obtain PVP fibers by blow-spinning technique and evaluated the samples in terms of their morphology by parameters such as the diameter size distribution, homogeneity, and shape of fibers. Ferroelectric fibers, such as barium titanate (BaTiO 3 ) [6], lead zirconium titanate (PZT) [7], and barium strontium titanate (BST) [8], have been successfully produced as nanofibers. To the best of our knowledge, there is no previous report on the fabrication of lithium niobate nanofibers.…”

Section: Introductionmentioning

confidence: 99%

Structural, dielectric, and electrical properties of lithium niobate microfibers

Cena

Behera

2016

J Adv Ceram

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Lithium niobate (LiNbO 3 ) fibers, obtained from the heat treatment of composite fibers (polymer/inorganic precursors), were successfully prepared by using the blow-spinning technique. A chemical solution containing Li and Nb ions, added to poly(vinyl pyrrolidone) solution, was used as precursor solution. The best condition for producing composite fibers was determined. The morphology of green and crystallized fibers was characterized by scanning electron microscopy (SEM) and revealed fibrous structure with an average diameter around 800 nm. X-ray diffraction (XRD) measurement revealed a pure LiNbO 3 (LN) phase formation. Detailed studies of dielectric response at various frequencies and temperatures exhibited a dielectric anomaly at 364 ℃. The electrical properties (impedance, modulus, and conductivity) of the fibers were studied using impedance spectroscopy technique. The contributions of grain and grain boundary effects were observed in the LN fibers. The activation energy of the composite fibers was found to be 1.5 eV in the high temperature region (325-400 ℃).

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Synthesis and Properties of Ferroelectric Nanotubes and Nanowires: A Review

Buscaglia

2016

Nanoscale Ferroelectrics and Multiferroics

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Nanofibers of barium strontium titanate (BST) by sol–gel processing and electrospinning

Cited by 78 publications

References 41 publications

Effect of calcination temperature and atmosphere on crystal structure of BaTiO3 nanofibers

Effect of calcination temperature and atmosphere on crystal structure of BaTiO3 nanofibers

Structural, dielectric, and electrical properties of lithium niobate microfibers

Synthesis and Properties of Ferroelectric Nanotubes and Nanowires: A Review

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