Table 4: Characteristics of the nanoceramics under study*.

Specimen , nm , nm CSA, nm D at 3.8 K , nm / 1 2010 250 86 39.00 1.50 0.70 2 1830 273 90 8.07 1.50 0.80 3 1747 232 96 52.00 1.28 0.85 4 1414 236 150 29.50 0.27 0.60 5 2037 260 150 57.00 0.35 0.70 6 1711 263 148 70.50 1.10 0.85

is the agglomerate size; is the grain size; are coherent scattering areas in the specimens according to the XPS, AFM, and SEM data; D is the effective diffusion coefficient; is the interface region thickness; is the acoustic impedance.