| Автор | Zhang Yangsheng |
| Дата выпуска | 1995-05-08 |
| dc.description | The temperature T dependence of the magnetic susceptibility chi and electrical resistivity rho of gamma -Fe-31 at.% Mn alloys containing 2-8.7 at.% Ge and 5.2 at.% Cr were measured in detail over the temperature range 5-500 K. The Neel transition of these alloys accompanied by an anomalous change in rho has been observed at a temperature of 300-430 K. In lowering the temperature to about 5 K, no second resistivity anomaly for gamma -Fe-31 at.% Mn or gamma -Fe-31 at.% Mn-5.2 at.% Cr alloys was found, but a secondary resistivity minimum was observed below 50 K in the gamma -Fe-31 at.% Mn-Ge alloys. The resistivity minimum temperature T<sub>min</sub> increases in proportion to the Ge concentration, and the resistivity measured from T<sub>min</sub> to about 5 K of the Fe-Mn-Ge alloys can be plotted as a linear function of log T, T<sup>2</sup> and square root T. These results suggest that the resistivity minimum in antiferromagnetic gamma -Fe-Mn-Ge alloys is due to a Kondo-like effect caused by localized magnetic moments on Fe atom sites which are induced or enhanced by the solution of Ge in gamma -Fe-Mn alloys. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Kondo-like effect in antiferromagnetic gamma -Fe-Mn-Ge alloys at low temperature |
| Тип | paper |
| DOI | 10.1088/0953-8984/7/19/010 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 7 |
| Первая страница | 3757 |
| Последняя страница | 3764 |
| Аффилиация | Zhang Yangsheng; Dept. of Mater. Sci. & Eng., Dalian Railway Inst., China |
| Выпуск | 19 |
