We succeeded in growing single crystals of EuCuP with the hexagonal structure by the Sn-flux method and measured the electrical resistivity, specific heat, magnetic susceptibility, magnetization, thermal expansion, and Hall effect, together with the electrical resistivity under pressure and magnetic field. EuCuP is a ferromagnet with a Curie temperature TC=32 K, following a divalent electronic state, although the temperature dependence of the electrical resistivity is not simple but possesses a sharp and distinct peak at TC. The Curie temperature is found to increase continuously with increasing pressure P, with a large rate of dTC/dP=5.7 K/GPa up to 8 GPa. This means that the divalent electronic state is stable up to 8 GPa. The present resistivity peak at TC is, however, extremely suppressed by magnetic field, and is found to be characteristic in a ferromagnet with a small number of carriers, which was confirmed from a measurement of the Hall effect.
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry