| Popis: |
The specific heat ${C}_{P}$ of pure platinum and of the ternary alloys ${\mathrm{Pt}}_{90}$${\mathrm{Ir}}_{5}$${\mathrm{Au}}_{5}$, ${\mathrm{Pt}}_{80}$${\mathrm{Ir}}_{10}$${\mathrm{Au}}_{10}$, ${\mathrm{Pt}}_{86}$${\mathrm{Rh}}_{9}$${\mathrm{Au}}_{5}$, and ${\mathrm{Pt}}_{74}$${\mathrm{Rh}}_{17}$${\mathrm{Au}}_{9}$ was measured between 0.5 and 30 K. ${C}_{P}$ is analyzed primarily in terms of lattice and electronic contributions, and the latter is discussed in terms of several models of metallic alloying. A constant contribution to ${C}_{P}$ was apparent in all of the alloys at the lowest temperatures. |
