Analysis of the Snoek relaxation in NbO alloys through the loss tangent distribution function
Analysis of the Snoek relaxation in NbO alloys through the loss tangent distribution function
复制标题
通过损耗角正切分布函数分析 NbO 合金中的 Snoek 弛豫
DOI：
10.1016/0925-8388(94)90558-4
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
C. L. Matteo
中科院分区：
文献类型：
--
作者：
F. Povolo;C. L. Matteo
在文献中最近引入的正切分布函数及其等效形式积分分布的理论框架内，对文献中报道的 Nb-0.15at.%O 合金中在不同温度和受迫振荡下测量的 Snoek 弛豫进行了分析。结果表明，弛豫谱可以用弛豫时间阿累尼乌斯关系中指前因子的频率依赖性来描述。在测量所涵盖的整个温度和频率范围内都会遇到活化焓的单一值。最后，将结果与之前在 Nb-0.6at.%O 合金中获得的结果进行比较，作为温度和自由振荡的函数，其中获得了表征弛豫过程的参数的相似值。
The Snoek relaxation in an Nb-0.15at.%O alloy reported in the literature, measured at different temperatures and in forced oscillations, is analysed within the framework of the theory of the tangent distribution function and its equivalent form, the integrated distribution, which has been introduced recently in the literature.It is demonstrated that the relaxation spectrum can be described in terms of a frequency dependence of the pre-exponential factor in the Arrhenius relationship of the relaxation times. A single value for the activation enthalpy is encountered in the whole range of temperatures and frequencies covered by the measurements.Finally, the results are compared with those previously obtained in an Nb-0.6at.%O alloy as a function of temperature and in free oscillations, where similar values were obtained for the parameters that characterize the relaxation process.