Abstract
We produced (Rh) n ≈ 1100 nanoparticles by reducing Rh 3+ cations with alcohol solvent and, for the first time, investigated their magnetic properties. The X-ray diffraction pattern showed that (Rh) n ≈ 1100 nanoparticles had a face-centered cubic structure with a lattice constant of a = 3.813 Å. We measured the hysteresis loops and the magnetization curves versus temperature. Although small (Rh) n<32 clusters are reported to be ferromagnetic, we observed the (Rh) n ≈ 1100 nanoparticles to be paramagnetic, as is the bulk metal, for the measured temperature range of T = 5 ∼ 330 K. Thus, (Rh) n clusters will reach their bulk paramagnetism at n < 1100.
| Original language | English |
|---|---|
| Pages (from-to) | 556-558 |
| Number of pages | 3 |
| Journal | Journal of the Korean Physical Society |
| Volume | 46 |
| Issue number | 2 |
| State | Published - Feb 2005 |
Keywords
- (rh) nanoparticles
- Face-centered cubic structure
- Paramagnetism