TOWARD A UNIFIED PHASE-DIAGRAM IN (TMTSF)2X

We have made a detailed pressure-magnetic-field-temperature phase diagram study of the organic conductors (TMTSF)2PF6 and (TMTSF)2ClO4 in the low temperature regions dominated by the cascade of field-induced spin density wave (FISDW) transitions. The PF6 salt shows general agreement with the ''standard model'' for the FISDW and the pressure dependence of its high field insulating state connects nicely with the n = 0 SDW. The ClO4 salt shows agreement with the standard model only when an anion ordering transition has been suppressed above approximately 5 kbar.