TRIPLET ABSORPTION AND PHASE-TRANSITION IN AGNA(NO2)2

The polarized spectra of the triplet absorption in AgNa(NO2)2 have been investigated in the temperature range of — 265~70°C. The intensity of the E∥b absorption decreases remarkably when the temperature is raised and approaches to Tc. Above Tc, it remains constant and is about 30% of the value at sufficiently low temperatures. The intensity of the E⊥b absorption shows no significant change near Tc. These results are discussed in comparison with those in AgNO2 and NaNO2. Discussions are also given on the temperature dependence of the triplet absorption and the phase transition in AgNa(NO2)2. © 1979, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.