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Direct synthesis of ultrafine tetragonal BaTiO3 nanoparticles at room temperature.

Qi JQ, Peng T, Hu YM, Sun L, Wang Y, Chen WP, Li LT, Nan CW, Chan HL - Nanoscale Res Lett (2011)

Bottom Line: The results revealed that the perovskite nanoparticles as fine as 7 nm have been synthesized.The phase transition of the as-prepared nanoparticles is investigated by the temperature-dependent Raman spectrum and shows the similar tendency to that of bulk BaTiO3 materials.It is confirmed that the nanoparticles have tetragonal phase at room temperature.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Materials Sciences and Engineering, Northeastern University at Qinhuangdao Branch, Qinhuangdao, Hebei Province, 066004, Peoples Republic of China. jianquanqi@mail.tsinghua.edu.cn.

ABSTRACT
A large quantity of ultrafine tetragonal barium titanate (BaTiO3) nanoparticles is directly synthesized at room temperature. The crystalline form and grain size are checked by both X-ray diffraction and transmission electron microscopy. The results revealed that the perovskite nanoparticles as fine as 7 nm have been synthesized. The phase transition of the as-prepared nanoparticles is investigated by the temperature-dependent Raman spectrum and shows the similar tendency to that of bulk BaTiO3 materials. It is confirmed that the nanoparticles have tetragonal phase at room temperature.

No MeSH data available.


The XRD profiles of the as-prepared nanoparticles.
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Figure 1: The XRD profiles of the as-prepared nanoparticles.

Mentions: Figure 1 shows the XRD profile of the as-prepared nanoparticles, and the sample has perfectly crystallized perovskite structure. It is believed that the line broadening effect is caused by the fine grains, and the grain size can be estimated as 6.8 nm by Scherrer's equation [15] according to the XRD results.


Direct synthesis of ultrafine tetragonal BaTiO3 nanoparticles at room temperature.

Qi JQ, Peng T, Hu YM, Sun L, Wang Y, Chen WP, Li LT, Nan CW, Chan HL - Nanoscale Res Lett (2011)

The XRD profiles of the as-prepared nanoparticles.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211978&req=5

Figure 1: The XRD profiles of the as-prepared nanoparticles.
Mentions: Figure 1 shows the XRD profile of the as-prepared nanoparticles, and the sample has perfectly crystallized perovskite structure. It is believed that the line broadening effect is caused by the fine grains, and the grain size can be estimated as 6.8 nm by Scherrer's equation [15] according to the XRD results.

Bottom Line: The results revealed that the perovskite nanoparticles as fine as 7 nm have been synthesized.The phase transition of the as-prepared nanoparticles is investigated by the temperature-dependent Raman spectrum and shows the similar tendency to that of bulk BaTiO3 materials.It is confirmed that the nanoparticles have tetragonal phase at room temperature.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Materials Sciences and Engineering, Northeastern University at Qinhuangdao Branch, Qinhuangdao, Hebei Province, 066004, Peoples Republic of China. jianquanqi@mail.tsinghua.edu.cn.

ABSTRACT
A large quantity of ultrafine tetragonal barium titanate (BaTiO3) nanoparticles is directly synthesized at room temperature. The crystalline form and grain size are checked by both X-ray diffraction and transmission electron microscopy. The results revealed that the perovskite nanoparticles as fine as 7 nm have been synthesized. The phase transition of the as-prepared nanoparticles is investigated by the temperature-dependent Raman spectrum and shows the similar tendency to that of bulk BaTiO3 materials. It is confirmed that the nanoparticles have tetragonal phase at room temperature.

No MeSH data available.