Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › тезисы в сборнике материалов конференции › научная › Рецензирование
Influence of resonance saturation fields on impurity spin-lattice relaxation of nuclear spin systems in solids. / Mikushev, V. M. ; Charnaya, Е. V. .
Magnetic resonance and its applications. Spinus - 2016. 13th International Youth School-Conference : Abstracts . SPb, 2016. стр. 114.Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › тезисы в сборнике материалов конференции › научная › Рецензирование
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TY - CHAP
T1 - Influence of resonance saturation fields on impurity spin-lattice relaxation of nuclear spin systems in solids
AU - Mikushev, V. M.
AU - Charnaya, Е. V.
N1 - Conference code: 13
PY - 2016/11/20
Y1 - 2016/11/20
N2 - The impurity relaxation via spin diffusion is effective when the local inverse spin temperature near defects, *loc, is closer to the equilibrium value equal to the inverse lattice temperature, *l, than the average value over the sample, <*>. If the spin-lattice relaxation time is measured using the conventional saturation recovery procedure, the impurity relaxation proceeds under the condition *loc > <*>. A rather strong additional magnetic (as well as acoustic or electric) steady saturation produces local heating of the nuclear spin-system, corresponding to *loc = 0 while <*> is equal to a steady-state value <*>st > 0. This means that the regions near impurities become warmer than the spin-system in the main crystal volume. In this case, the impurity relaxation should be turned off and the restoration of the magnetization in the sample should be caused by the lattice mechanism only.
AB - The impurity relaxation via spin diffusion is effective when the local inverse spin temperature near defects, *loc, is closer to the equilibrium value equal to the inverse lattice temperature, *l, than the average value over the sample, <*>. If the spin-lattice relaxation time is measured using the conventional saturation recovery procedure, the impurity relaxation proceeds under the condition *loc > <*>. A rather strong additional magnetic (as well as acoustic or electric) steady saturation produces local heating of the nuclear spin-system, corresponding to *loc = 0 while <*> is equal to a steady-state value <*>st > 0. This means that the regions near impurities become warmer than the spin-system in the main crystal volume. In this case, the impurity relaxation should be turned off and the restoration of the magnetization in the sample should be caused by the lattice mechanism only.
KW - solid state NMR, spin-lattice relaxation, nuclear spin diffusion
UR - https://www.ampere-society.org/books/Spinus2016.pdf
M3 - Conference abstracts
SP - 114
BT - Magnetic resonance and its applications. Spinus - 2016. 13th International Youth School-Conference
CY - SPb
T2 - 13-th International Youth School-Conference “Magnetic Resonance and its applications”
Y2 - 20 November 2016 through 26 November 2016
ER -
ID: 94005393