Abstract
The spin-lattice relaxation times, T1, in α-, β-, and amorphous Si3N4 have been obtained for the first time, using a multiple-pulse saturation recovery method. The saturation recovery of the 29Si magnetization follows exponential behavior under magic-angle spinning conditions, within the limits of experimental error. A rather wide dispersion of T1 values is observed for the phases of Si3N4: 284±29 min (-46.686 ppm) and 260±23 min (-48.812 ppm) for the α-phase, 36±4 min for the β-phase, and 11±1 min for the amorphous phase, assuming an exponential recovery. The values obtained for the exponent in the power-law fitting are 0.599(9) (-46.686 ppm) and 0.61(1) (-48.812 ppm) for the α-phase, 0.52(2) for the β-phase, and 0.53(3) for the amorphous phase.
| Original language | English |
|---|---|
| Pages (from-to) | 2251-2254 |
| Number of pages | 4 |
| Journal | Journal of the American Ceramic Society |
| Volume | 83 |
| Issue number | 9 |
| Publication status | Published - 2000 Sep |
| Externally published | Yes |
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ASJC Scopus subject areas
- Ceramics and Composites
Cite this
29Si MASNMR spin-lattice relaxation study of α-, β-, and amorphous silicon nitride. / Fujimori, Hirotaka; Sato, Naoya; Ioku, Koji; Goto, Seishi; Yamada, Tetsuo.
In: Journal of the American Ceramic Society, Vol. 83, No. 9, 09.2000, p. 2251-2254.Research output: Contribution to journal › Article
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TY - JOUR
T1 - 29Si MASNMR spin-lattice relaxation study of α-, β-, and amorphous silicon nitride
AU - Fujimori, Hirotaka
AU - Sato, Naoya
AU - Ioku, Koji
AU - Goto, Seishi
AU - Yamada, Tetsuo
PY - 2000/9
Y1 - 2000/9
N2 - The spin-lattice relaxation times, T1, in α-, β-, and amorphous Si3N4 have been obtained for the first time, using a multiple-pulse saturation recovery method. The saturation recovery of the 29Si magnetization follows exponential behavior under magic-angle spinning conditions, within the limits of experimental error. A rather wide dispersion of T1 values is observed for the phases of Si3N4: 284±29 min (-46.686 ppm) and 260±23 min (-48.812 ppm) for the α-phase, 36±4 min for the β-phase, and 11±1 min for the amorphous phase, assuming an exponential recovery. The values obtained for the exponent in the power-law fitting are 0.599(9) (-46.686 ppm) and 0.61(1) (-48.812 ppm) for the α-phase, 0.52(2) for the β-phase, and 0.53(3) for the amorphous phase.
AB - The spin-lattice relaxation times, T1, in α-, β-, and amorphous Si3N4 have been obtained for the first time, using a multiple-pulse saturation recovery method. The saturation recovery of the 29Si magnetization follows exponential behavior under magic-angle spinning conditions, within the limits of experimental error. A rather wide dispersion of T1 values is observed for the phases of Si3N4: 284±29 min (-46.686 ppm) and 260±23 min (-48.812 ppm) for the α-phase, 36±4 min for the β-phase, and 11±1 min for the amorphous phase, assuming an exponential recovery. The values obtained for the exponent in the power-law fitting are 0.599(9) (-46.686 ppm) and 0.61(1) (-48.812 ppm) for the α-phase, 0.52(2) for the β-phase, and 0.53(3) for the amorphous phase.
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M3 - Article
AN - SCOPUS:0034274756
VL - 83
SP - 2251
EP - 2254
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 9
ER -