Details
| Original language | English |
|---|---|
| Pages (from-to) | 1182-1187 |
| Number of pages | 6 |
| Journal | Defect and Diffusion Forum |
| Volume | 237-240 |
| Issue number | PART 2 |
| Publication status | Published - 2005 |
Abstract
Multiple-time spin-alignment echo (SAE) NMR spectroscopy of spin-3/2 nuclei is used to study ultraslow diffusion in the hexagonal layered Li ion conductor LixTiS2 (x ≈1). Two-time correlation functions were monitored by recording (Jeener-Broekaert) echo amplitudes for constant evolution and variable mixing times. Echo decay rates τSAE-1 being directly related to Li jump rates, take values ranging from 2s -1 to 570 s-1 between temperatures T = 185 K and 293 K. The temperature dependence of τSAE-1 shows Arrhenius behaviour with an activation energy of 0.26(1) eV, being similar to that obtained by spin-lattice relaxation measurements in the rotating as well as in the laboratory frame at higher temperatures.
Keywords
- Lithium titanlum disulfide, NMR relaxation, Solid state NMR, Spin-alignment, Ultraslow diffusion
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Radiation
- Materials Science(all)
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Defect and Diffusion Forum, Vol. 237-240, No. PART 2, 2005, p. 1182-1187.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Ultraslow diffusion in polycrystalllne h-LITIS2 studied by 7Li spln-alignment echo NMR spectroscopy
AU - Wilkening, Martin
AU - Heitjans, Paul
PY - 2005
Y1 - 2005
N2 - Multiple-time spin-alignment echo (SAE) NMR spectroscopy of spin-3/2 nuclei is used to study ultraslow diffusion in the hexagonal layered Li ion conductor LixTiS2 (x ≈1). Two-time correlation functions were monitored by recording (Jeener-Broekaert) echo amplitudes for constant evolution and variable mixing times. Echo decay rates τSAE-1 being directly related to Li jump rates, take values ranging from 2s -1 to 570 s-1 between temperatures T = 185 K and 293 K. The temperature dependence of τSAE-1 shows Arrhenius behaviour with an activation energy of 0.26(1) eV, being similar to that obtained by spin-lattice relaxation measurements in the rotating as well as in the laboratory frame at higher temperatures.
AB - Multiple-time spin-alignment echo (SAE) NMR spectroscopy of spin-3/2 nuclei is used to study ultraslow diffusion in the hexagonal layered Li ion conductor LixTiS2 (x ≈1). Two-time correlation functions were monitored by recording (Jeener-Broekaert) echo amplitudes for constant evolution and variable mixing times. Echo decay rates τSAE-1 being directly related to Li jump rates, take values ranging from 2s -1 to 570 s-1 between temperatures T = 185 K and 293 K. The temperature dependence of τSAE-1 shows Arrhenius behaviour with an activation energy of 0.26(1) eV, being similar to that obtained by spin-lattice relaxation measurements in the rotating as well as in the laboratory frame at higher temperatures.
KW - Lithium titanlum disulfide
KW - NMR relaxation
KW - Solid state NMR
KW - Spin-alignment
KW - Ultraslow diffusion
UR - http://www.scopus.com/inward/record.url?scp=29744450918&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/ddf.237-240.1182
DO - 10.4028/www.scientific.net/ddf.237-240.1182
M3 - Article
AN - SCOPUS:29744450918
VL - 237-240
SP - 1182
EP - 1187
JO - Defect and Diffusion Forum
JF - Defect and Diffusion Forum
SN - 1012-0386
IS - PART 2
ER -