Magnetic resonance of14N and23Na in NaNO2single crystal and powder

Abstract
NQR of 14N and NMR of 23Na in a single crystal(3X13X16 mm3) and polycrystalline powdered specimen have been investigated in the ferroelectric phase of NaNO2. 14N NQR frequencies measured with the single crystal are turned out to be different by 1-2% from those with powder. The effect of depolarization is tentatively proposed for the cause.