Structure and Composition of Ba-W-Ti-O Ceramics Interface Regions Formed at Ultrasonic Vibration

Table 4

Characteristics of the nanoceramics under study^*.

Specimen	𝑅ag, nm	𝑅gr, nm	CSA, nm	D at 3.8 K	𝑙gb, nm	𝜌2𝑣2/𝜌1𝑣1
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

^∗𝑅_ag is the agglomerate size; 𝑅_gr is the grain size; 𝑅_CSA are coherent scattering areas in the specimens according to the XPS, AFM, and SEM data; D is the effective diffusion coefficient; 𝑙_gb is the interface region thickness; 𝜌₂𝑣₂/𝜌₁𝑣₁ is the acoustic impedance.