Determination of Thermal Diffusivity of a Manganite Thin Film
NIU Dong-Lin, LIU Xiao-Jun, HUANG Qiao-Jian, ZHANG Shu-Yi
State Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093
Determination of Thermal Diffusivity of a Manganite Thin Film
NIU Dong-Lin;LIU Xiao-Jun;HUANG Qiao-Jian;ZHANG Shu-Yi
State Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093
关键词 ：
74.62.Dh ,
71.30.+h ,
72.80.Ga ,
66.30.Xj ,
67.55.Hc
Abstract ： Thermal diffusivity has been investigated in a manganite thin film La0.6 Sr0.4 MnO3 by means of transient grating (TG) technique at room temperature. A new method, which is generalized to two-layered samples of the thin film deposited on a semi-infinite substrate, is established to fit the TG signals. The thermal diffusivity of the La0.6 Sr0.4 MnO3 thin film with a thickness of 200nm on an MgO (100) substrate is determined to be 0.92mm2 /s, which is slightly smaller than that of the single crystal sample (1mm2 /s).
Key words ：
74.62.Dh
71.30.+h
72.80.Ga
66.30.Xj
67.55.Hc
出版日期: 2005-10-01
:
74.62.Dh
(Effects of crystal defects, doping and substitution)
71.30.+h
(Metal-insulator transitions and other electronic transitions)
72.80.Ga
(Transition-metal compounds)
66.30.Xj
(Thermal diffusivity)
67.55.Hc
引用本文:
NIU Dong-Lin;LIU Xiao-Jun;HUANG Qiao-Jian;ZHANG Shu-Yi. Determination of Thermal Diffusivity of a Manganite Thin Film[J]. 中国物理快报, 2005, 22(10): 2659-2662.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I10/2659
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2005, Vol. 22 
