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

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Solid State Communications

DOI:https://doi.org/10.1016/j.ssc.2009.01.033· OSTI ID:953187

Mamontov, Eugene ^[1]; Vakhrushev, S. B. ^[2]; Alatas, A. ^[3]

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1. ORNL
2. Ioffe Physico-Technical Institute, St. Petersburg, Russia
3. Argonne National Laboratory (ANL)

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

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 953187
• Journal Information: Solid State Communications, Vol. 149, Issue 15-16; ISSN 0038-1098
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACOUSTICS
ASBESTOS
BRILLOUIN ZONES
FIBERS
HARMONIC OSCILLATOR MODELS
PHONONS
RESOLUTION
SCATTERING
VECTORS
VELOCITY
Nanostructures
X-ray scattering
Phonons