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| CHEN Zhijun1,2，YANG Chunli1，WU Xiusheng1，LIU Wei1 |
| (1. Key Lab of Energy Conversion Materials, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, China; 2. Anhui Jixi High School, Xuancheng 245300, Anhui, China) |
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Abstract The lowfrequency internal friction Q-1 and relative shear modulus E of La2Cu1-xLixO4+δ (0.02≤x≤0.15) compounds were studied by means of force fibration. For x=0.02 and 0.05, only one relaxation peak exists around 250 K and this peak is due to the hopping of O pairs. For x=0.1 and 0.15, apart from the peak P1, another peak P2 is observed at 200 K. In addition, the position of the structure phase transition revealed by shear modulus moves to lower temperature side with the Li content increasing.
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Received: 10 May 2009
Published: 31 May 2010
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