# NaMgCl3 단결정 내의 23Na 원자핵에 대한 핵 자기 공명 연구

Yeom, Tae Ho
염태호

• Accepted : 2015.12.03
• Published : 2015.12.31
• 27 5

#### Abstract

We have investigated nuclear magnetic resonance of $^{23}Na$ nucleus in $NaMgCl_3$ single crystal in the temperature range 200 K~410 K using FT-NMR spectrometer. The spin-lattice relaxation times $T_1$ of $^{23}Na$ nucleus residing at cubic symmetry in the host crystal was measured as a function of temperature. The $T_1$ of $^{23}Na$ nucleus decreased with increasing temperature. The nuclear spin-lattice relaxation rate $1/T_1$ of $^{23}Na$ in $NaMgCl_3$ 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, $1/T_1$ being proportional to the absolute temperature. The activation energy calculated was $E_a=4.82J/mol$.

#### Keywords

$NaMgCl_3$ single crystal;NMR;spin-lattice relaxation time;activation energy

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