I. Ardelean et al., THE VALENCE STATES AND MAGNETIC-INTERACTIONS BETWEEN MANGANESE IONS IN TEO2-PBO-B2O3 GLASSES, Journal of magnetism and magnetic materials, 158, 1996, pp. 239-240
The temperature dependence of the magnetic susceptibility of xMnO .(I
- x)[70TeO(2) . 25B(2)O(3) . 5PbO] glasses with 0 < x less than or equ
al to 40 mol% have been investigated. The valence states and the distr
ibution of manganese ions in the glass matrix depend on the concentrat
ion of these ions. We have established that in these glasses for x > 1
0 mol% both, Mn2+ and Mn3+ ions are present, which explains their magn
etic behaviour.