TY - JOUR

T1 - Use of beta radiation-detected NMR to study ionic motion in solids

AU - Heitjans, Paul

N1 - Funding Information: ACKNOWLEDGEMENTS Most of the experimental work reported here was performed at the High Flux Reactor Grenoble in collaboration with H. Ackermann, B. Bader, P. Freilander, G. Kiese, A. K~rblein, C. van der Marel, A. Schirmer and H.-J. St~ckmann. I am indebted to B. Bader, P. Freil~nder and A. Schirmer for helpful discussions and to H. Ackermann and H.J. St~ckmann also for critical reading of the manuscript. This work has been sponsored by the Bundesministe-rium fur Forschung und Technologie.

PY - 1986/1

Y1 - 1986/1

N2 - The method of beta radiation-detected nuclear magnetic resonance/relaxation (β-NMR) is introduced and its features and capabilities as a new tool for studying ionic motions on a microscopic scale are discussed. Information on ion dynamics is obtained from spin-lattice relaxation rates and resonance spectra of isolated β-active nuclei embedded in the sample. The polarized probe nuclei are produced by a nuclear reaction. Their polarization is monitored via the anisotropy of the β-radiation distribution. Recent applications to the field of solid state ionics are reviewed. As examples of β-NMR on solids with a layer structure measurements on the fast ionic conductor Li3N and the intercalation compound LiC6 are discussed. Emphasis is on the questions of low-dimensional diffusion. We further discuss lithium silicate and borate glasses as representatives of strongly disordered solids. Different modes of ionic motion were found by spin-relaxation measurements over wide temperature and magnetic field ranges. We deal also with the low-temperature data which reflect the influence of defect centres typical of glasses.

AB - The method of beta radiation-detected nuclear magnetic resonance/relaxation (β-NMR) is introduced and its features and capabilities as a new tool for studying ionic motions on a microscopic scale are discussed. Information on ion dynamics is obtained from spin-lattice relaxation rates and resonance spectra of isolated β-active nuclei embedded in the sample. The polarized probe nuclei are produced by a nuclear reaction. Their polarization is monitored via the anisotropy of the β-radiation distribution. Recent applications to the field of solid state ionics are reviewed. As examples of β-NMR on solids with a layer structure measurements on the fast ionic conductor Li3N and the intercalation compound LiC6 are discussed. Emphasis is on the questions of low-dimensional diffusion. We further discuss lithium silicate and borate glasses as representatives of strongly disordered solids. Different modes of ionic motion were found by spin-relaxation measurements over wide temperature and magnetic field ranges. We deal also with the low-temperature data which reflect the influence of defect centres typical of glasses.

UR - http://www.scopus.com/inward/record.url?scp=0021896131&partnerID=8YFLogxK

U2 - 10.1016/0167-2738(86)90089-5

DO - 10.1016/0167-2738(86)90089-5

M3 - Article

AN - SCOPUS:0021896131

VL - 18-19

SP - 50

EP - 64

JO - SOLID STATE IONICS

JF - SOLID STATE IONICS

SN - 0167-2738

IS - PART 1

ER -