Ultrasonic energy gap measurement in lead doped with a small amount of gold

✍ Scribed by B.K. Basu; S. Satish

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 164 KB
• Volume: 20
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(80)90206-4

✦ Synopsis

Table 1. Properties of fibre samples Number Supplier Fibres Fibre to resin ratio Resin 1 Dornier (carbon) rovings C-fibre 55% 2 Dornier rovings E-glass 60% 3 Bayer fibres E-glass 78% 4 Bayer fibres E-glass 72% 5 Ferrozell (HgW2372) cloth R-glass 61% CI BA CY209-HT972 CIBA CY209-HT972 polyester Leguval W 45 Lekutherm E270 hardener T3 epoxy

The results of the five samples are compiled in Fig. . It is noteworthy that at low temperatures the glass fibre materials have similar heat conductivities as other amorphous solids 4 and fibre composites s. In particular, the universal plateau at about 10 K is also observed 4. The carbon fibre material, however, differs from the other ones in having a lower conductivity at low temperatures but a higher one at high temperatures.