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  Relaxation in the glass former acetylsalicylic acid studied by deuteron magnetic resonance and dielectric spectroscopy

Nath, R., ElGoresy, T., Geil, B., Zimmermann, H., & Böhmer, R. (2006). Relaxation in the glass former acetylsalicylic acid studied by deuteron magnetic resonance and dielectric spectroscopy. Physical Review E, 74(2): 021506, pp. 1-4. doi:10.1103/PhysRevE.74.021506.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002B-BBE6-2 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002B-BBE7-F
Genre: Journal Article
Alternative Title : Relaxation in the glass former acetylsalicylic acid studied by deuteron magnetic resonance and dielectric spectroscopy

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PhysRevE_74_2006_021506e.pdf (Any fulltext), 249KB
 
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http://journals.aps.org/pre/pdf/10.1103/PhysRevE.74.021506 (Any fulltext)
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 Creators:
Nath, R., Author
ElGoresy, T., Author
Geil, B., Author
Zimmermann, Herbert1, Author           
Böhmer, Roland, Author
Affiliations:
1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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 Abstract: Supercooled liquid and glassy acetylsalicylic acid was studied using dielectric spectroscopy and deuteron relaxometry in a wide temperature range. The supercooled liquid is characterized by major deviations from thermally activated behavior. In the glass the secondary relaxation exhibits the typical features of a Johari-Goldstein process. Via measurements of spin-lattice relaxation times the selectively deuterated methyl group was used as a sensitive probe of its local environments. There is a large difference in the mean activation energy in the glass with respect to that in crystalline acetylsalicylic acid. This can be understood by taking into account the broad energy barrier distribution in the glass.

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Language(s): eng - English
 Dates: 2006-04-052006-08-092006-08-092006-08-09
 Publication Status: Issued
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 665402
DOI: 10.1103/PhysRevE.74.021506
URI: http://www.ncbi.nlm.nih.gov/pubmed/17025436
Other: 6635
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Title: Physical Review E
  Other : Phys. Rev. E
Source Genre: Journal
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Publ. Info: Melville, NY : American Physical Society
Pages: - Volume / Issue: 74 (2) Sequence Number: 021506 Start / End Page: 1 - 4 Identifier: ISSN: 1539-3755
CoNE: https://pure.mpg.de/cone/journals/resource/954925225012