High pressure effects on the intermetallic superconductor Ti$_{0.85}$Pd$_{0.15}$
| Autor: | Reyes-Damián, C., Morales, F., Martínez-Piñeiro, Esmeralda, Escudero, Roberto |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | J. Supercond. Novel Magn. Published online: 31 March 2020 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/s10948-020-05480-8 |
| Popis: | This work reports superconductivity studies in the intermetallic Ti$_{0.85}$Pd$_{0.15}$ performed in normal conditions and under hydrostatic pressure. The crystal structure of the compound has a body centered cubic at room temperature and atmospheric pressure as unstable $\beta$-Ti phase. X-Ray diffraction pattern shows space group $Im\bar{3}m$ with parameter $a=3.2226(4)$ \AA and density around 5.6242 g/cm$^{3}$. The superconducting transition temperature, T$_{C}=3.7$ K was determined from resistance, magnetization, and specific heat measurements. The two critical magnetic fields, the coherence length, Ginzburg-Landau parameter, London penetration depth, the superconducting energy gap, the Debye temperature, the electron-phonon coupling constant and density of states at the Fermi level were calculated. These parameters were obtained at ambient pressure. Under hydrostatic pressure, the magnetic susceptibility measurements show a small increment on T$_{C}$, the maximum T$_{C}=3.83$ K was obtained at the maximum applied pressure of 1.03 GPa. The slope calculated for T$_{C}$ as a linear function of pressure was about 0.14 K/GPa, possibly associated with an increase in the electronic density of states. Comment: 6 pages, 8 figures |
| Databáze: | arXiv |
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