Abstract

Like a number of AMX₃ salts, CsMnBr₃ adopts the lexagonal CsNiCl₃ structure which consists of infinite linear chains of MX₆^4- octahedra sharing opposite faces. The physical properties of many of the linear chain AMX₃ salts have attracted considerable attention because of the one-dimensional character of the structure. Yamamoto, McClure, Marzzacco and Walderman observed that the luminescence of (CH₃)₄NMnCl₃ is quenched by the presence of transition metal impurities. (Yamamoto et al., 1977). The temperature and concentration dependence of the luminescence quenching indicated that the exciton migration is thermally activated and restricted to the linear chains (one-dimensional). Subsequently it was shown that trivalent rare-earth ions such as Nd³⁺, Er³⁺ and Tm³⁺ could be introduced into crystals of CsMnBr₃ and that these ions behaved as radiative traps for the manganese excitons. (McPherson and Francis, 1978, McPherson et al., 1979).

© 1984 Optical Society of America