Author/Authors :
Endo، نويسنده , , S. and Goto، نويسنده , , T. and Fukase، نويسنده , , T. and Matsui، نويسنده , , H. and Uozaki، نويسنده , , H. and Tsuchiya، نويسنده , , H. and Negishi، نويسنده , , E. and Ishizaki، نويسنده , , Y. and Abe، نويسنده , , Y. and Toyota، نويسنده , , N.، نويسنده ,
Abstract :
We have performed 1H and 77Se NMR measurements on a π–d organic metal λ-(BEDT-TSF)2FeCl4 containing paramagnetic ions Fe3+. It is found from 1H NMR measurements that the resonance line starts to split around TFM=70 K, just a temperature where a ferroelectric-like transition occurs, and with further decreasing temperature, the spectrum becomes significantly broad near the metal–insulator transition TMI=8.3 K. From 77Se NMR measurements, near the phase boundary between the forced-ferromagnetic metallic state and the canted antiferromagnetic insulating state at 1.6 K and 11.67 T, a single peak becomes split with two new peaks emerging at the both sides of the zero-shift.
Keywords :
?-(BEDT-TSF)2FeCl4 , Metal-to-insulator transition , Antiferromagnetic order , 1H and 77Se NMR , Ferroelectric-like transition
