TY - JOUR
T1 - Metal-insulator transitions in magnetic conductor λ-(BEDT-TSF)2FeCl4 studied by 1H and 77Se NMR
AU - Endo, S.
AU - Goto, T.
AU - Fukase, T.
AU - Matsui, H.
AU - Uozaki, H.
AU - Tsuchiya, H.
AU - Negishi, E.
AU - Ishizaki, Y.
AU - Abe, Y.
AU - Toyota, N.
N1 - Funding Information:
This work was supported by a grant-in-aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology (nos. 09940141, 12640360, 12046259), a grant-in-aid from the Japan Society for the Promotion of Science (nos. 11740182 and 13640345) and REIMEI Research Resources of the Japan Atomic Energy Research Institute.
PY - 2003/3/13
Y1 - 2003/3/13
N2 - 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=70K, 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=8.3K. From 77Se NMR measurements, near the phase boundary between the forced-ferromagnetic metallic state and the canted antiferromagnetic insulating state at 1.6K and 11.67T, a single peak becomes split with two new peaks emerging at the both sides of the zero-shift.
AB - 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=70K, 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=8.3K. From 77Se NMR measurements, near the phase boundary between the forced-ferromagnetic metallic state and the canted antiferromagnetic insulating state at 1.6K and 11.67T, a single peak becomes split with two new peaks emerging at the both sides of the zero-shift.
KW - Antiferromagnetic order
KW - Ferroelectric-like transition
KW - H and Se NMR
KW - Metal-to-insulator transition
KW - λ-(BEDT-TSF)FeCl
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U2 - 10.1016/S0379-6779(02)00345-4
DO - 10.1016/S0379-6779(02)00345-4
M3 - Conference article
AN - SCOPUS:0037435375
SN - 0379-6779
VL - 133-134
SP - 557
EP - 558
JO - Synthetic Metals
JF - Synthetic Metals
T2 - ISCOM 2001
Y2 - 10 September 2001 through 14 September 2001
ER -