N NQR Study of Mixed Complexes ( NaN 0 2 ) i _ JC ( AN 0 3 ) JC : ( A = K , Na ) *
نویسندگان
چکیده
N nuclear quadrupole resonance of the system (NaN02)i_J(AN03)A. with A = K and Na in the x-range 0<x<0.5 and the temperature range 77 K < 7 < 3 6 0 K has been studied. The l N NQR frequency of NaN0 2 and its line width do not change with x, the latter fact untrasting the results of other mixed systems such as Na|_,.AgvN02. This indicates that in (NaN02)!_v(AN03)v highly mobile lattice defects exist. The dependence on x of the rate of change in the spin-lattice relaxation time Tx near the transition temperature is discussed in terms of a correlated flipping motion of the N 0 2 ion groups.
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