Evidence for two hysteresis loops in YBa2Cu3O6 + x ultrasonic velocity measurements

The velocities of longitudinal and shear ultrasonic waves propagating in superconducting YBa2Cu3O6 + x polycrystals are reported as functions of temperature. The velocity data between 50 and 300 K show two distinct and pronounced hysteresis loops in the ranges 70 to 190 K and 200 to 230 K, respectiv...

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Veröffentlicht in:	Physica status solidi. A, Applied research Applied research, 1993-07, Vol.138 (1), p.249-256
Hauptverfasser:	Biagi, E., Masotti, L., Borchi, E., Masi, L., Garré, R., De Gennaro, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Cuprates superconductors (high tc and insulating parent compounds) Exact sciences and technology High-Tc compounds Mechanical and acoustical properties, elasticity, and ultrasonic attenuation Physics Properties of type I and type II superconductors Superconductivity Y-based cuprates
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