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RESEARCH PRODUCT
Correlation of primary relaxations and high-frequency modes in supercooled liquids. II. Evidence from spin-lattice relaxation weighted stimulated-echo spectroscopy
Burkhard GeilGerald HinzeA. NowaczykRoland Böhmersubject
Spin–spin relaxationMaterials scienceNuclear magnetic resonanceDeuteriumRelaxation (NMR)Spin–lattice relaxationStimulated echoSupercoolingSpectroscopyMolecular physicsdescription
Using spin-lattice relaxation weighted stimulated-echo spectroscopy, we report evidence for a correlation of the primary and secondary relaxation times. The experiments are performed using deuteron nuclear magnetic resonance somewhat above the calorimetric glass-transition of ortho-terphenyl, D-sorbitol, and cresolphthalein-dimethylether. The data analysis is based on the procedure outlined in the accompanying theoretical paper [B. Geil, G. Diezemann, and R. B\"ohmer, Phys. Rev. E 74, 041504 (2006)]. Direct experimental evidence for a modified spin-lattice relaxation is obtained from measurements on a methyl deuterated acetyl salicylic acid glass. The limitations of the present experimental method are discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-10-30 | Physical Review E |