Abstract
Incoherent Kondo effects have been observed in CexSi 100-x (x = 18, 53, 66 and 87) amorphous alloys produced by sputtering. They show large enhancement of the electronic specific-heat coefficient at low temperatures, being classified as heavy-fermion systems. The magnetic susceptibility reveals a Curie-Weiss law at T>100 K with an effective Bohr magneton number of above 2.45 mu B. However, the electrical resistivity is large, revealing a Kondo-type logarithmic temperature dependence. The atomic randomness prohibits the coherent Kondo state and the formation of a magnetically ordered state in the Ce-Si amorphous alloys.
| Original language | English |
|---|---|
| Article number | 028 |
| Pages (from-to) | 8425-8436 |
| Number of pages | 12 |
| Journal | Journal of Physics: Condensed Matter |
| Volume | 5 |
| Issue number | 44 |
| DOIs | |
| Publication status | Published - 1993 Dec 1 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
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Hihara, T., Sumiyama, K., Yamauchi, H., Homma, Y., Suzuki, T., & Suzuki, K. (1993). Kondo behaviour in Ce-Si amorphous alloys. Journal of Physics: Condensed Matter, 5(44), 8425-8436. [028]. https://doi.org/10.1088/0953-8984/5/44/028