Two phase transitions in TSeF-TCNQ?-The effects of doping with small concentrations of TTF-TCNQ

The single phase transition which had been observed in TSeF-TCNQ is seen to split into two phase transitions when TSeF-TCNQ is doped with small amounts of TTF-TCNQ (<two-percent). The higher phase transition temperature increases rapidly with small TTF doping. The lower phase transition temperature decreases only slightly with TTF doping but the resistive anomally associated with this transition is drastically broadened by the addition of only two percent TTF-TCNQ. © 1977.