Nuclear Spin Relaxation by Defect Mechanisms of Self-Diffusion in Crystals
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77 45.248 ±0.005 83.478 ±0 .005 0.2580 ± 0.0001 281.892 ±0 .005 123 45.247 ±0.005 83.561 ±0 .005 0.2562 ±0.0001 282.128 ±0 .005 153 45.232 ±0 .005 83.619 ±0 .005 0.2544 ± 0.0001 282.280 ±0 .005 213 45.173 ±0.005 83.749 ±0 .005 0.2495 ± 0.0001 282.581 ±0 .005 253 45.097 ±0 .005 83.850 ± 0 . 0 0 5 0.2444 ± 0.0001 282.789 ±0 .005 296 44.976 ±0.005 83.960 ±0 .005 0.2372 ± 0.0001 282.977 ±0 .005 313 44.900 ±0 .005 83.994 ±0 .005 0.2334 ± 0.0001 282.992 ±0 .005 363 44.616 ±0.005 84.043 ±0 .005 0.2204 ± 0.0001 282.838 ±0 .005 398 44.327 ±0.005 83.994 ±0 .005 0.2087 ± 0.0001 282.401 ±0 .005 The small influence of q{e) in periodates can be understood from the fact that for a I7+-ion the Sternheimer factor y s h o u l d be small compared to I~. Also for I in " ionic" crystals such as NH4T1I4 • 2 HoO or Me2PtI c , the main contribution of e2qQ/h is due to <7(p).
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