Table 2.
Magnetism, magnetic ordering temperature, effective magnetic moment μeff, Weiss temperature ΘCW, and electrical resistivity ρ at room temperature (RT) of prepared samples. SG, FM, and FM corr. refer to spin-glass, ferromagnetism, and ferromagnetic correlation below 300 K, respectively. Tf and TC are spin-freezing and Curie temperatures, respectively. Tf is the temperature where field-cooled magnetization under the external field of 100 Oe shows the hump.
| Sample | Magnetism | Magnetic Ordering Temperature (K) | μeff (μB/Fe) | ΘCW (K) | ρ (RT) (μΩcm) |
|---|---|---|---|---|---|
| FeRh4 | SG | Tf = 59 | 5.74 | −700 | 39.0 |
| FeIr4 | SG | Tf = 23, 69 | 5.71 | −890 | 21.2 |
| FePd4 | FM | TC = 393 | 5.44 | 409 | 59.5 |
| FePt4 | FM | TC = 177, 317 | 4.11 | 272 | 107 |
| FeRhIrPdPt | SG +FM corr. |
Tf = 90 | 3.40 | 308 | 70.8 |