Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 002 |
| Seiten (von - bis) | 4323-4332 |
| Seitenumfang | 10 |
| Fachzeitschrift | Journal of Physics: Condensed Matter |
| Jahrgang | 3 |
| Ausgabenummer | 24 |
| Publikationsstatus | Veröffentlicht - 1991 |
| Extern publiziert | Ja |
Abstract
With the method of beta -radiation-detected nuclear magnetic resonance/relaxation ( beta -NMR) nuclear spin relaxation, resonance signals and reorientation in Li2O.3B2O3 glass were investigated using the probe nuclei 8Li and 12B. The non-exponential relaxation found for both probes can be described by an exp(- square root t/T1inh) law and is explained by inhomogeneous polarization averaging over the isolated nuclei. The temperature dependence of the corresponding relaxation rate T1inh-1 shows two regions of different characteristics: below 200 K the coupling to relaxation centres typical of glasses dominates the relaxation. Above room temperature the relaxation of 8Li and 12B is due to Li diffusion in the glass. Linewidth and nuclear spin reorientation measurement corroborate earlier results from 7Li and 11B NMR on the electric field gradients at the respective probe sites.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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in: Journal of Physics: Condensed Matter, Jahrgang 3, Nr. 24, 002, 1991, S. 4323-4332.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Beta-NMR investigation of dynamic and structural properties of lithium borate glass
AU - Schirmer, A.
AU - Heitjans, P.
AU - Bader, B.
AU - Freilander, P.
AU - Stockmann, H. J.
AU - Ackermann, H.
PY - 1991
Y1 - 1991
N2 - With the method of beta -radiation-detected nuclear magnetic resonance/relaxation ( beta -NMR) nuclear spin relaxation, resonance signals and reorientation in Li2O.3B2O3 glass were investigated using the probe nuclei 8Li and 12B. The non-exponential relaxation found for both probes can be described by an exp(- square root t/T1inh) law and is explained by inhomogeneous polarization averaging over the isolated nuclei. The temperature dependence of the corresponding relaxation rate T1inh-1 shows two regions of different characteristics: below 200 K the coupling to relaxation centres typical of glasses dominates the relaxation. Above room temperature the relaxation of 8Li and 12B is due to Li diffusion in the glass. Linewidth and nuclear spin reorientation measurement corroborate earlier results from 7Li and 11B NMR on the electric field gradients at the respective probe sites.
AB - With the method of beta -radiation-detected nuclear magnetic resonance/relaxation ( beta -NMR) nuclear spin relaxation, resonance signals and reorientation in Li2O.3B2O3 glass were investigated using the probe nuclei 8Li and 12B. The non-exponential relaxation found for both probes can be described by an exp(- square root t/T1inh) law and is explained by inhomogeneous polarization averaging over the isolated nuclei. The temperature dependence of the corresponding relaxation rate T1inh-1 shows two regions of different characteristics: below 200 K the coupling to relaxation centres typical of glasses dominates the relaxation. Above room temperature the relaxation of 8Li and 12B is due to Li diffusion in the glass. Linewidth and nuclear spin reorientation measurement corroborate earlier results from 7Li and 11B NMR on the electric field gradients at the respective probe sites.
UR - http://www.scopus.com/inward/record.url?scp=0005253891&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/3/24/002
DO - 10.1088/0953-8984/3/24/002
M3 - Article
AN - SCOPUS:0005253891
VL - 3
SP - 4323
EP - 4332
JO - Journal of Physics: Condensed Matter
JF - Journal of Physics: Condensed Matter
SN - 0953-8984
IS - 24
M1 - 002
ER -