Synchrotron-radiation-based perturbed angular correlations used in the investigation of rotational dynamics in soft matter

Journal Article · Sun Jan 01 00:00:00 EST 2006 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.73.0· OSTI ID:20787826

Sergueev, I ^[1]; Buerck, U van; Petry, W ^[1]; Chumakov, A I ^[2]; Asthalter, T ^[3]; Smirnov, G V ^[4]; Franz, H ^[5]; Rueffer, R ^[2]

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1. Physik-Department E13, Technische Universitaet Muenchen, D-85748 Garching (Germany)
2. European Synchrotron Radiation Facility (ESRF), P.O. Box 220, F-38043 Grenoble (France)
3. Physikalische Chemie II, Universitaet Stuttgart, D-70569 Stuttgart (Germany)
4. Russian Research Center 'Kurchatov Institute', 123182 Moscow (Russian Federation)
5. Hamburger Synchrotronstrahlungslabor (HASYLAB), DESY, D-22603 Hamburg (Germany)

A new method, synchrotron-radiation-based perturbed angular correlations, was applied to study rotational dynamics of Moessbauer atoms in soft condensed matter, using incoherent nuclear resonant scattering of synchrotron radiation. A theory was developed that describes the correlations for the scattering by an ensemble of randomly oriented spins under the influence of rotational relaxation. In a feasibility study a molecular glass former doped by probe molecules was investigated above the glass transition up to the normal liquid state. A comparison of the obtained rotational relaxation rates with data from dielectric spectroscopy shows that the probe molecules reproduce the dynamics of the glass former.

• OSTI ID: 20787826
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 73, Issue 2; Other Information: DOI: 10.1103/PhysRevB.73.024203; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
COMPARATIVE EVALUATIONS
DIELECTRIC MATERIALS
DOPED MATERIALS
FEASIBILITY STUDIES
GLASS
LIQUIDS
MOESSBAUER EFFECT
MOLECULES
PERTURBED ANGULAR CORRELATION
PHASE TRANSFORMATIONS
RELAXATION
RESCATTERING
RESONANCE SCATTERING
ROTATIONAL STATES
SPECTROSCOPY
SPIN
SYNCHROTRON RADIATION
VITRIFICATION