Phase stability and thermal conductivity of Gd3+ doped La2Mo2O9
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College of Materials Science and Engineering,Beijing University of Technology
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Abstract:
La2Mo2O9 is expected to have an extremely low thermal conductivity. However, the α-β phase transition at 580 oC seriously affects its performance and applications. In this work, the effect of Gd3+ doping on the phase stability and thermal conductivity was investigated. The results show that the phase transition of La2Mo2O9 is effectively suppressed with the doping of Gd3+ ions. The samples show a β-phase when x ≥ 0.2. Moreover, the thermal conductivity decreases firstly and then increases with the increase of doping content of Gd3+ ions with a minimum value at x = 0.2 at room temperature. The thermal conductivities of all samples are below 1 W/(m.K).
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[Sun Yuan, Qu Zhixue, Feng Hanghang, Liu Zhaocen. Phase stability and thermal conductivity of Gd3+ doped La2Mo2O9[J]. Rare Metal Materials and Engineering,2020,49(2):545~549.] DOI:[doi]