Sol-gel synthesis of BaTiO3 and Ba1−x−yCaySrx(ZryTi1−y)O3 perovskite powders

Samuneva, B.; Jambazov, S.; Lepkova, D.; Dimitriev, Y.

doi:10.1016/0272-8842(90)90087-v

Cited by 32 publications

(8 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Results (not shown) of a separately conducted FTIR study of the samples confirmed this. The results are also in accordance with a study by Samuneva et al, 27 gel method and calcined at 1000°C were examined by XRD (Fig. 3).…”

Section: Xrd Analysissupporting

confidence: 87%

X-ray photoelectron spectroscopy and electrical properties studies of Nb-doped strontium titanate ceramics prepared from titanyl acylate precursors

Yang¹

1999

J. Electron. Mater.

View full text Add to dashboard Cite

Through a sol-gel or sol-precipitation process Nb 2 O 5 -doped SrTiO 3 was obtained from titanyl acylate precursors in acidic or alkaline solution, respectively. Nonstoichiometric powders were obtained by varying the Sr/Ti ratio in the starting materials. X-ray photoelectron spectroscopy (XPS) was used to investigate the surface properties of the powders and the sintered bulk ceramics. Excess Ti in the sol-gel process was converted to TiO 2 (rutile) after calcination. In contrast, in the sol-precipitation process, the excess Ti was converted to Magnéli phases, which benefited the powders sinterability, and also enhanced the formation of Ti 3+ on the powder surface, resulting in an abnormally high dielectric constant. The excess Sr in the sol-gel process was converted to SrCO 3 and then to gaseous CO 2 during sintering, which resulted in some cavities in the microstructure. In the sol-precipitation process, a structure of Sr n+1 Ti n O 3n+1 was established and some near rectangular shaped, high-density grains were obtained.

show abstract

Section: Xrd Analysissupporting

confidence: 87%

X-ray photoelectron spectroscopy and electrical properties studies of Nb-doped strontium titanate ceramics prepared from titanyl acylate precursors

Yang¹

1999

J. Electron. Mater.

View full text Add to dashboard Cite

show abstract

“…The spectrum shows a characteristic peak appearing at a wave number ∼585 cm −1 in the case of PLZT, a base material in the present study. This peak represents the characteristics peak of a perovskite phase [19]. The typical representative FTIR spectrum in the case of Al indicates a shift in frequency in the higher side of the spectrum in accordance with the well known relation:…”

Section: Resultsmentioning

confidence: 50%

Structural, dielectric and piezoelectric properties of aluminium doped PLZT ceramics prepared by sol–gel route

Dutta¹,

Choudhary²,

Sinha³

2007

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…Interestingly, the intensity of these two bands decreases signifi-cantly when annealed at 600 o C (Figure 2b) and disappears completely at 700 o C (Figure 2c). Another distinct absorption band observed at 563 cm -1 has been assigned to ν M-O mode which is characteristic of the formation of ABO 3 type of perovskite structure of PZT powder [12]. The effect of annealing at 600 o C and 700 o C on the characteristic bands is apparent from the shift of ν M-O band from 563cm -1 to higher wave numbers, 590cm -1 and 592cm -1 respectively, presumably due to increased number of M-O bonds in the perovskite phase of PZT material.…”

Section: Ftir Studiesmentioning

confidence: 99%

Synthesis of nano crystalline spatulae of lead zirconate titanate (PbZr0.52Ti0.48O3)

Bhatt¹,

Sharma²,

Gupta³

2010

View full text Add to dashboard Cite

A simple and effective method for the synthesis of nano-crystalline PZT spatulae has been re-ported near MPB via a new Solution-Ignition Synthesis route and has been characterized by FT-IR, XRD, TG/DTG/DTA and SEM techniques. X-ray line broadening and Scherrer formula show crystallite size to be~20 nm. Densities of nano-crystalline spatulae of PZT in pellet form made by using 2% PVA and without PVA have been found to be 5.35 and 7.51 gm/cm3 respec-tively compared to the theoretical value of 7.78 gm/cm3. Dielectric constants of 83 and 227 of these spatulae with dielectric loss 0.118 and 0.0609 at 1 MHz and a high resistivity value of 3.043 * 107 Ω cm for PZT pellets made without PVA suggest these nano-crystalline PZT spatu-lae to be the potential candidates for high fre-quency applications

show abstract

Sol-gel synthesis of BaTiO3 and Ba1−x−yCaySrx(ZryTi1−y)O3 perovskite powders

Cited by 32 publications

References 9 publications

X-ray photoelectron spectroscopy and electrical properties studies of Nb-doped strontium titanate ceramics prepared from titanyl acylate precursors

X-ray photoelectron spectroscopy and electrical properties studies of Nb-doped strontium titanate ceramics prepared from titanyl acylate precursors

Structural, dielectric and piezoelectric properties of aluminium doped PLZT ceramics prepared by sol–gel route

Synthesis of nano crystalline spatulae of lead zirconate titanate (PbZr0.52Ti0.48O3)

Contact Info

Product

Resources

About