Nuclear Magnetic Resonance Study of 23Na in NaMgCl3 Single Crystal

Title & Authors
Nuclear Magnetic Resonance Study of 23Na in NaMgCl3 Single Crystal
Yeom, Tae Ho;

Abstract
We have investigated nuclear magnetic resonance of $\small{^{23}Na}$ nucleus in $\small{NaMgCl_3}$ single crystal in the temperature range 200 K~410 K using FT-NMR spectrometer. The spin-lattice relaxation times $\small{T_1}$ of $\small{^{23}Na}$ nucleus residing at cubic symmetry in the host crystal was measured as a function of temperature. The $\small{T_1}$ of $\small{^{23}Na}$ nucleus decreased with increasing temperature. The nuclear spin-lattice relaxation rate $\small{1/T_1}$ of $\small{^{23}Na}$ in $\small{NaMgCl_3}$ single crystal was proportional to the temperature T. This behavior is explained with the characteristic feature of the direct process between the nuclear spins and single phonon, $\small{1/T_1}$ being proportional to the absolute temperature. The activation energy calculated was $\small{E_a=4.82J/mol}$.
Keywords
$\small{NaMgCl_3}$ single crystal;NMR;spin-lattice relaxation time;activation energy;
Language
Korean
Cited by
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