Acoustic phonons in chrysotile asbestos probed by high-resolution inelastic x-ray scattering

✍ Scribed by E. Mamontov; S.B. Vakhrushev; Yu.A. Kumzerov; A. Alatas; H. Sinn

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 954 KB
• Volume: 149
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/j.ssc.2009.01.033

✦ Synopsis

Acoustic phonons in an individual, oriented fiber of chrysotile asbestos (chemical formula Mg 3 Si 2 O 5 (OH) 4 )

were observed at room temperature in the inelastic x-ray measurement with a very high (meV) resolution. The x-ray scattering vector was aligned along [1 0 0] direction of the reciprocal lattice, nearly parallel to the long axis of the fiber. The latter coincides with [1 0 0] direction of the direct lattice and the axes of the nano-channels. The data were analyzed using a damped harmonic oscillator model. Analysis of the phonon dispersion in the first Brillouin zone yielded the longitudinal sound velocity of (9200 ± 600) m/s.