Author/Authors :
Ueda، نويسنده , , Kazumasa and Sugimoto، نويسنده , , Toyonari and Endo، نويسنده , , Satoshi and Toyota، نويسنده , , Naoki and Kohama، نويسنده , , Masakado and Yamamoto، نويسنده , , Koji and Suenaga، نويسنده , , Yusaku and Morimoto، نويسنده , , Hiroshi and Yamaguchi، نويسنده , , Toshiyuki and Munakata، نويسنده , , Megumu and Hosoito، نويسنده , , Nobuyoshi and Kanehisa، نويسنده , , Nobuko and Shibamoto، نويسنده , , Yoshiyuki and Kai، نويسنده , , Yasushi، نويسنده ,
Abstract :
Ferromagnetic behavior at room temperature was observed in the tetramethylammonium (NMe+4) and cesium (Cs+) salts of tetracyanoquinodimethane (TCNQ) and its radical anion (TCNQ−.) in a molecular ratio of 1:2. The saturation magnetizations and coercive forces are 0.79 emu/mol and ≈300 Oe for (NMe+4 · TCNQ−.) · 12TCNQ, and 1.46 emu/mol and ≈100 Oe for (Cs+. · TCNQ−.) · 12TCNQ, respectively. In contrast, the 1:1 TCNQ/TCNQ−. mixed tetraethylammonium (NEt4+ salt, (NEt4+·TCNQ−·)·TCNQ, exhibited no ferromagnetic behavior at room temperature nor at lower temperatures.
