Author/Authors :
Kadam، نويسنده , , R.M. and Sastry، نويسنده , , M.D and Bhide، نويسنده , , M.K and Chavan، نويسنده , , S.A and Yakhmi، نويسنده , , J.V and Kahn، نويسنده , , O، نويسنده ,
Abstract :
EPR measurements on (NBu4)2Mn2[Cu(opba)]3·6DMSO·1H2O in second harmonic mode in the 300–13 K range have shown a strong 1/T dependence of line position in the paramagnetic phase, evolution of local ordering below 40 K and a new zero-field signal in the long-range ordered phase. These features suggest: (i) existence of spin correlations from room temperature resulting in local short-range order below 40 K; and (ii) coexistence of ordered and disordered phases at 14 K. The new EPR signature at zero-field obtained at and below 15 K, is attributed to domain walls.
