Preparation of single crystalline Sr0.5Ba0.5Nb2O6 particles

Chen, Weiwu; Kume, Shinji; Duran, Cihangir

doi:10.1016/j.jeurceramsoc.2005.06.010

Cited by 17 publications

(12 citation statements)

References 25 publications

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“…The growth direction of the pillar grains is their c axes, which was confirmed by electrical diffraction pattern. 24 At the end of the pillar grains, growth spirals can be observed in CBN22 and CBN30 ͓Figs. 11͑a͒ and 11͑b͔͒ which resemble that observed in single crystals.…”

Section: Grain Growth Of Cbnmentioning

confidence: 97%

Dielectric, ferroelectric properties, and grain growth of CaxBa1−xNb2O6 ceramics with tungsten-bronzes structure

Fan

Huang

et al. 2008

Journal of Applied Physics

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Section: Grain Growth Of Cbnmentioning

confidence: 97%

Dielectric, ferroelectric properties, and grain growth of CaxBa1−xNb2O6 ceramics with tungsten-bronzes structure

Fan

Huang

et al. 2008

Journal of Applied Physics

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“…Textured ceramics possess high degree of orientated grains. MSS has been proved to be a very useful method for the preparation of templates of many different compounds, [27][28][29][30][31] which can be further used to fabricate textured piezoelectric ceramics.…”

Section: Introductionmentioning

confidence: 99%

Molten salt synthesis of K₄Nb₆O₁₇, K₂Nb₄O₁₁and KNb₃O₈crystals with needle- or plate-like morphology

et al. 2011

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Here we report on molten salt synthesis of four different compounds in the K 2 O-Na 2 O-Nb 2 O 5 system. The three compounds K 4 Nb 6 O 17 , K 2 Nb 4 O 11 and KNb 3 O 8 , with non-cubic crystal structures, were prepared as single crystalline particles with large aspect ratios. K 4 Nb 6 O 17 was prepared with a platelike morphology, K 2 Nb 4 O 11 a fibre-like and finally KNb 3 O 8 had a plate like morphology. K x Na 1Àx NbO 3 , with a cubic perovskite crystal structure at the synthesis conditions, was only obtained as cube-shaped crystals, which became larger with increasing synthesis temperature. A systematic study of the influence of the processing conditions on the morphology of the product compounds was conducted. The study demonstrated that the morphology of the product phase was controlled by the crystal structure and the connectivity of the NbO 6 -octahedra of the crystal structures. Finally, the crystal structure of K 2 Nb 4 O 11 was determined to be a tungsten bronze type structure with space group P4/mbm.

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“…The E gap value (2.66 eV) suggesting the presence of intermediary energy levels within the band gap. In this case, these energy levels are arising from the structural order-disorder at long and shortrange, this type of broadband visible luminescence was also observed in various perovskite titanates whose particle size was in nanometre scale [42]. Fig.…”

Section: Uv-vis and Photoluminescence (Pl) Analysismentioning

confidence: 52%

Citrate–nitrate Derived Sr0.5Ba0.5Ta2O6 Tetragonal Tungsten Bronze Nanorods: Investigation Of Their Optical And Dielectric Properties

Sharma

Kumar²,

Sharma³

et al. 2012

Adv. Mater. Lett.

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First time novel complex strontium barium tantalate, Sr 0.5 Ba 0.5 Ta 2 O 6 was successfully synthesized in 1D structure (nanorods) by citrate-nitrate gel route. Their structural properties were examined via X-ray diffractometry (XRD) and revealed the formation of tetragonal tungsten bronze (TTB) structure at as low as 1100ºC. Also, FT-IR, FT-Raman, UV-vis, SEM, TEM and PL were used to identify the structure and properties of powders. Well isolated nanorods of the average diameter of ~200nm can be fabricated by this route. PL spectrum showed strong and broad visible emission band around 439nm due to particles with little surface defects. The frequency dependent dielectric dispersion of SBT50 powders sintered at 1300°C/4 h was investigated in a frequency range from 1 kHz-1MHz and at different temperatures (25°C-450°C). It is observed that: (i) the dielectric constant (ε') and loss tangent (tan δ) are dependent on frequency, (ii) the temperature of dielectric constant maximum shift toward lower temperature side and the maximum dielectric constant (ε) was observed to be 2400 at 1 kHz. The T c was found to be ~444-449°C and ferroelectric relaxor or diffuse phase transition like behavior was observed at around 449°C.

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Preparation of single crystalline Sr0.5Ba0.5Nb2O6 particles

Cited by 17 publications

References 25 publications

Dielectric, ferroelectric properties, and grain growth of CaxBa1−xNb2O6 ceramics with tungsten-bronzes structure

Dielectric, ferroelectric properties, and grain growth of CaxBa1−xNb2O6 ceramics with tungsten-bronzes structure

Molten salt synthesis of K₄Nb₆O₁₇, K₂Nb₄O₁₁and KNb₃O₈crystals with needle- or plate-like morphology

Citrate–nitrate Derived Sr0.5Ba0.5Ta2O6 Tetragonal Tungsten Bronze Nanorods: Investigation Of Their Optical And Dielectric Properties

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Preparation of single crystalline Sr0.5Ba0.5Nb2O6 particles

Cited by 17 publications

References 25 publications

Dielectric, ferroelectric properties, and grain growth of CaxBa1−xNb2O6 ceramics with tungsten-bronzes structure

Dielectric, ferroelectric properties, and grain growth of CaxBa1−xNb2O6 ceramics with tungsten-bronzes structure

Molten salt synthesis of K4Nb6O17, K2Nb4O11and KNb3O8crystals with needle- or plate-like morphology

Citrate–nitrate Derived Sr0.5Ba0.5Ta2O6 Tetragonal Tungsten Bronze Nanorods: Investigation Of Their Optical And Dielectric Properties

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Molten salt synthesis of K₄Nb₆O₁₇, K₂Nb₄O₁₁and KNb₃O₈crystals with needle- or plate-like morphology