Anomalous Specific Heat Behavior of Nanocrystalline Fe at Low Temperatures
BAI Haiyang, LUO Jianlin, JIN Duo, SUN Jirong*
Cryogenic Laboratory, Chinese Academy of Sciences, Beijing 100080
* Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Anomalous Specific Heat Behavior of Nanocrystalline Fe at Low Temperatures
BAI Haiyang;LUO Jianlin;JIN Duo;SUN Jirong*
Cryogenic Laboratory, Chinese Academy of Sciences, Beijing 100080
* Institute of Physics, Chinese Academy of Sciences, Beijing 100080
关键词 ：
61.46.+w ,
65.40.-f
Abstract ： The specific heat of nanocrystalline iron with grain size of 40nm has been measured in the low temperature range from 1.8 to 26K. The anomalous specific heat behavior of nanocrystalline iron is compared to that of the standard bulk iron. It is found that the electronic specific heat coefficient γ obtained at low temperatures decreases by about 50%. A T2 term in the heat capacity associated with surface modes has been clearly observed. A large enhancement of the specific heat at temperatures above 16K may be interpreted as the Einstein oscillator contributions.
Key words ：
61.46.+w
65.40.-f
出版日期: 1995-09-01
引用本文:
BAI Haiyang;LUO Jianlin;JIN Duo;SUN Jirong*. Anomalous Specific Heat Behavior of Nanocrystalline Fe at Low Temperatures[J]. 中国物理快报, 1995, 12(9): 549-552.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1995/V12/I9/549
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