Acoustic-property measurements of the oxide superconductor BaPb1−xBixO3 by the sphere-resonance method
Masamoto Tanaka, Ryozo Yoshizaki, Tunetaro Sakudo, Tetsuro Suzuki
DOI 10.1103/PhysRevB.33.132 · Physical Review B
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Abstract
The acoustic resonance frequency and amplitude of spherical sintered polycrystalline specimens of BaPb1−xBixO3 (x=0.20 and 0.25) were measured as a function of temperature (300–4.2 K) and external magnetic field (0–5 T). The resonance amplitude was found to be dependent on the magnetic field and temperature; it changed drastically at the second critical magnetic field and at the critical temperature of the normal-superconducting transition. This effect is interpreted in terms of a model in which the electron-phonon coupling of the thermal phonons play an essential role in determining the amplitude of the resonance.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BaPb1-xBixO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12 | Pressure not reported | unknown |
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