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Logarithmic Temperature Dependence of Electrical Resistivity of (Co41Fe39B20)x(Al–O)100 – x Nanocompositesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 ноября 2016 г.
- Авторы: Mikhailovskii Yu O., Prudnikov V.N., Ryl’kov V.V., Chernoglazov K.Yu, Sitnikov A.V., Kalinin Yu E., Granovskii A.B.
- Журнал: Physics of the Solid State
- Том: 58
- Год издания: 2016
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 444
- Последняя страница: 446
- DOI: 10.1134/S1063783416030227
- Аннотация: The temperature dependence of the conductivity σ(T) of (Co41Fe39B20)x(Al–O)100 – x nanocomposite films for different concentrations of amorphous ferromagnetic metal, x (56 > x > 30), is studied in the temperature range of 4.2–300 K. It is shown that, for the concentrations in the interval 56 > x > 49, the conductivity obeys the logarithmic law σ(T) = A(1 + αlnT), where A and α depend on the concentration. According to the theory developed by Efetov et al, this logarithmic dependence is connected with specificities of the Coulomb interaction in nanogranulated alloys on the intergranule tunneling in the transient region of concentrations from metallic conduction to the dielectric regime. The comparison of the theory with the experiment revealed only qualitative agreement. The reasons of the quantitative disagreement are discussed. The resistivity of samples with the concentrations lying in the range 49 > x > 30 obeys the 1/2 power law.
- Добавил в систему: Грановский Александр Борисович