Q.R. Huang, Ho-Cheol Kim, et al.
Macromolecules
Ultrasonic attenuation and velocity have been measured in the high-Tc superconductor La1.85Ba0.15CuO4 at 24 MHz. On cooling, a pronounced softening of the lattice is observed, beginning above room temperature. Below 200 K, the lattice remains soft and highly attenuating, suggestive of a near-instability state over the entire range 4 K to 200 K, partial stiffening occurs, but the attenuation remains higher than at room temperature, a feature suggestive of a possible glassy state. © 1987.
Q.R. Huang, Ho-Cheol Kim, et al.
Macromolecules
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EMC 2001
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EMC 2011
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