Low-temperature properties of nuclear spin relaxation in inorganic glasses

Autor: J. Steinert, G. Balzer-Jöllenbeck, Himanshu Jain, Otmar Kanert
Rok vydání: 1988
Předmět:
Zdroj: Solid State Communications. 65:303-309
ISSN: 0038-1098
DOI: 10.1016/0038-1098(88)90703-x
Popis: The temperature and frequency dependence of nuclear spin relaxation has been investigated for different nuclear probes in a large variety of inorganic glasses between 1.5 K and room temperature. Below about 200 K, the data can be interpreted consistently in the framework of thermally-activated excitations of disordered modes (two-level-systems; TLS). The analysis demonstrates the common properties of the TLS in all the glasses. In particular, low attempt frequencies of the TLS excitations were found indicating that a TLS arises probably from a group of atoms.
Databáze: OpenAIRE