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- W2366329525 abstract "HoCrO3 precursors were prepared by a co-precipitation method and HoCrO3 nano powders were obtained through heat-treating these precursors under different conditions.The crystal structure and micro-morphology of the samples were characterized by X-ray diffractometer and scanning electron microscope.The effects of heat treatment conditions on HoCrO3 gas-sensing properties were investigated via gas response tests of the sensors prepared by HoCrO3 powders.The results showed that the samples were nanocrystalline and its mean grain size is 50 nm or so and samples were perovskite type composite oxides.HoCrO3 calcined at 800 ℃ for 2 h had high sensitivity,selectivity and stability to trimethylamine(TMA).The detection limit of the sensor to TMA was as low as 1 × 10–7(volume fraction) and the response could reach 3.So HoCrO3 is a kind of prospective semiconductor material to detect TMA." @default.
- W2366329525 created "2016-06-24" @default.
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- W2366329525 date "2012-01-01" @default.
- W2366329525 modified "2023-09-24" @default.
- W2366329525 title "Preparation of HoCrO_3 Powders by Co-Precipitation Method and Gas-Sensing Properties of HoCrO_3 Gas Sensors" @default.
- W2366329525 hasPublicationYear "2012" @default.
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