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物理学报. 2004, 53(11): 3834-3838.
doi: 10.7498/aps.53.3834.
La2NiO4+δ体系相分离现象的低频内耗研究
- 收稿日期: 2004-01-09
- 修回日期: 2004-03-23
- 刊出日期: 2004-11-16
English Abstract
Phase separation in La2NiO4+δ studied by lowfrequency internal friction technique
- Received Date:
09 January 2004
- Accepted Date:
23 March 2004
- Published Online:
16 November 2004
Abstract: There exists a low-frequency relaxation internal friction peak in La2NiO4+δwithδ=0.071, 0.110, 0.135 and 0.140, the peak position shifting to higher temperatu re, when more excess oxygen is incorporated. At δ=0.087 two peaks were obse rved which may be attributed to the jump of the interstitial oxygen atoms in the diff erent kind of the one-dimensional ordering phase formed by phase separation. At δ=0.038 two peaks were also observed which may be attributed to the jump of the i nterstitial oxygen atoms in the low-temperature tetragonal phase and the one-dimensional ordering phase formed by phase separation.
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Keywords:
- La2NiO4 /
- internal friction /
- phase separation
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