Measure of the magnitude of Young's modulus in whisker-like samples of the Bi-based high-Tc materials Bi2Sr2CaCu2Ox and Bi2Sr2Ca2Cu3Ox

✍ Scribed by T.M. Tritt; M. Marone; Xin-Fen Chen; M.J. Skove; A.C. Ehrlich; G.X. Tessema; D.J. Gillespie; J.P. Franck; J. Jung

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 383 KB
• Volume: 178
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(91)90077-c

✦ Synopsis

We have measured Young's modulus in ribbon-like whisker samples of the high-T¢ materials: BizSreCaCuzOx and Bi2Sr2Ca2Cu30~. This is the first direct measurement of Young's modulus for whiskers of any of the high T,. materials. We used a stress-strain probe that applies an axial force (uniaxial stress) to the whisker-like sample and simultaneously measures the corresponding samplc elongation. The slope of the resulting stress-strain curve yields the magnitude of Young's modulus (Y). We found these Bi based high-Tc materials to be soft with Y-~ 20 GPa for Bi2Sr2CaCu20, and Y~ 25 GPa for Bi2Sr2Ca2Cu30 x.