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Citation: WANG Zhu-Yi, CHEN Cheng, FENG Cai-Hui, WANG Jin-Xing, ZOU Bo, ZHAO Meng, WU Feng-Qing. Synthesis, Characterization and Humidity Sensitive Properties of Nanocrystalline LaCo_xFe_1-xO₃[J]. Acta Physico-Chimica Sinica, ;2008, 24(03): 375-378. doi: 10.1016/S1872-1508(08)60017-0 shu

Synthesis, Characterization and Humidity Sensitive Properties of Nanocrystalline LaCo_xFe_1-xO₃

1.
College of Chemistry, Jilin University, Changchun 130023, P. R. China

Received Date: 13 October 2007
Available Online: 15 January 2008

The nanocrystalline LaCoxFe1 -xO3 with different concentrations of Co was prepared by polyethylene glycol (PEG) sol-gel method and characterized by differential thermal analysis and thermal gravimetric analysis (DTA-TGA), X-ray diffraction (XRD), and scanning electron microscope (SEM). It was found that the crystal structure of perovskite-type could be obtained at 600 ℃, and the concentration of Co had significant effects on the solid-state reaction and the average particle size of the obtained nanocrystals. Furthermore, the humidity-sensitive properties of nanocrystalline LaCoxFe1 -xO3 were investigated, and it was found that LaCo0.3Fe0.7O3 exhibited higher sensitivity to humidity compared with other samples. The addition of Na2CO3 improved the humidity-sensitive properties of this sample, and made its response to humidity od in the whole humidity range of 11%-95%relative humidity (RH).
- Perovskite,
- LaCoxFe1-xO3,
- Humidity sensitive property
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沈阳化工大学材料科学与工程学院沈阳 110142

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Synthesis, Characterization and Humidity Sensitive Properties of Nanocrystalline LaCoxFe1-xO3

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通讯作者: 陈斌, bchen63@163.com

Synthesis, Characterization and Humidity Sensitive Properties of Nanocrystalline LaCo_xFe_1-xO₃