Evidence for a magnetic contribution to the electrical resistivity in amorphous Fe80B20-xCx alloys.
Evidence for a magnetic contribution to the electrical resistivity in amorphous Fe80B20-xCx alloys.
复制标题
磁性对非晶 Fe80B20-xCx 合金电阻率贡献的证据。
DOI：
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Rosenberg
中科院分区：
文献类型：
--
作者：
Kaul;Kettler;Rosenberg
The electrical resistivity ensuremath{
ho} as a function of temperature has been measured for amorphous ${mathrm{Fe}}_{80}$${mathrm{B}}_{20mathrm{ensuremath{-}}mathrm{x}}$${mathrm{C}}_{mathrm{x}}$ (0ensuremath{le}xensuremath{le}10) alloys in the temperature range 4.2char21{}300 K. A detailed quantitative analysis of the resistivity data for the first time establishes that besides a dominant structural contribution ${ensuremath{
ho}}_{mathrm{str}}$, there exists a significant magnetic contribution ${ensuremath{
ho}}_{mathrm{mag}}$ to ensuremath{
ho} in such glasses. The values of ${ensuremath{
ho}}_{mathrm{mag}}$ for the investigated glassy alloys reveal that the quenched disorder does not exert any noticeable influence on the coherent scattering of electrons from long-wavelength magnons and that the net contribution to ensuremath{
ho} due to the elastic and incoherent components of electron-magnon scattering is negligibly small. Furthermore, the present data analysis permits a straightforward calculation of the Debye temperature ${ensuremath{Theta}}_{D}$, the structure factor ${S}_{0}$(2${k}_{F}$), and 2${k}_{F}$ from ${ensuremath{
ho}}_{mathrm{str}}$; and the values of these quantities so determined, in turn, bring to the limelight various limitations of the extended Ziman theory so far as its application to glasses containing a strong scattering transition metal (e.g., Fe in the present case) is concerned.
The electrical resistivity ensuremath{
ho} as a function of temperature has been measured for amorphous ${mathrm{Fe}}_{80}$${mathrm{B}}_{20mathrm{ensuremath{-}}mathrm{x}}$${mathrm{C}}_{mathrm{x}}$ (0ensuremath{le}xensuremath{le}10) alloys in the temperature range 4.2char21{}300 K. A detailed quantitative analysis of the resistivity data for the first time establishes that besides a dominant structural contribution ${ensuremath{
ho}}_{mathrm{str}}$, there exists a significant magnetic contribution ${ensuremath{
ho}}_{mathrm{mag}}$ to ensuremath{
ho} in such glasses. The values of ${ensuremath{
ho}}_{mathrm{mag}}$ for the investigated glassy alloys reveal that the quenched disorder does not exert any noticeable influence on the coherent scattering of electrons from long-wavelength magnons and that the net contribution to ensuremath{
ho} due to the elastic and incoherent components of electron-magnon scattering is negligibly small. Furthermore, the present data analysis permits a straightforward calculation of the Debye temperature ${ensuremath{Theta}}_{D}$, the structure factor ${S}_{0}$(2${k}_{F}$), and 2${k}_{F}$ from ${ensuremath{
ho}}_{mathrm{str}}$; and the values of these quantities so determined, in turn, bring to the limelight various limitations of the extended Ziman theory so far as its application to glasses containing a strong scattering transition metal (e.g., Fe in the present case) is concerned.