Effect of Ca2+ and Mn2+ ions on the radiation properties of LaAlO3
Effect of Ca2+ and Mn2+ ions on the radiation properties of LaAlO3
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DOI：
10.1016/j.ceramint.2018.08.036
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发表时间：
2018-11
影响因子：
5.2
通讯作者：
Yayu Su;Xiaolei Li;Huiming Ji;Zhihao Zhao;Peng Zhang
中科院分区：
文献类型：
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作者：
Yayu Su;Xiaolei Li;Huiming Ji;Zhihao Zhao;Peng Zhang
采用固相反应法制备了Ca2+-Mn2+掺杂laalo3，研究了Ca2+和Mn2+离子掺杂量对laalo3红外辐射性能的影响。结果表明，掺杂Ca2+和Mn2+离子后，laalo3的红外辐射性能显著提高。当LaAlO3中掺杂40 mol% Ca2+和50 mol% Mn2+离子时，在1 ~ 22 µm波长范围内的平均发射率高达0.90，高于纯LaAlO3的0.71。LaAlO3红外辐射性能的增强主要是由于掺杂Ca2+和Mn2+离子后，LaAlO3的带隙减小，空穴载流子对能量的吸收增加，晶格振动吸收增加。具有高红外辐射性能的Ca2+-Mn2+掺杂laalo3在高温氧化环境中具有广阔的应用前景。
The Ca2+-Mn2+doped LaAlO3was prepared by solid state reaction method, and the effects of different doping content of Ca2+and Mn2+ions on the infrared radiation properties of LaAlO3were investigated. The result showed that after doping Ca2+and Mn2+ions, the infrared radiation properties of LaAlO3significantly increased. When 40 mol% Ca2+and 50 mol% Mn2+ions were doped into LaAlO3, the average emissivity in the wavelength range of 1–22 µm was up to 0.90, which was higher than pure LaAlO3(0.71). The enhancement of infrared radiation properties of LaAlO3was mainly due to the decrease of band gap of LaAlO3, the increase of hole carriers absorption of energy, and the increase of lattice vibration absorption after doping Ca2+and Mn2+ions. Ca2+-Mn2+doped LaAlO3with high infrared radiation properties shows application prospect in the high temperature oxidation environment.