TY - JOUR
T1 - X-ray irradiation effect on magnetic properties of Dimer-Mott insulators
T2 - κ-(BEDT-TTF)2Cu[N(CN)2]Cl and β'-(BEDT-TTF) 2ICl2
AU - Yoneyama, Naoki
AU - Sasaki, Takahiko
AU - Kobayashi, Norio
AU - Furukawa, Ko
AU - Nakamura, Toshikazu
PY - 2010/6/1
Y1 - 2010/6/1
N2 - We report the X-ray irradiation dose dependence of the magnetic susceptibility in κ-(BEDT-TTF)2Cu[N(CN)2]Cl (κ-Cl) and β'-(BEDT-TTF)2ICl2 (β'-ICl 2). The Néel temperature of 27.5 K in κ-Cl reduces to 24.0 K after irradiation of 240 MGy, while that of 22.0K in β'-ICl 2 does not vary. Taking account of the suppressed amplitude of the dicyanamide vibration modes in the infrared spectra of the irradiated κ-Cl, we suggest that X-ray irradiation modifies the anion structure related to the CN group, which does not hold in β'-ICl2.
AB - We report the X-ray irradiation dose dependence of the magnetic susceptibility in κ-(BEDT-TTF)2Cu[N(CN)2]Cl (κ-Cl) and β'-(BEDT-TTF)2ICl2 (β'-ICl 2). The Néel temperature of 27.5 K in κ-Cl reduces to 24.0 K after irradiation of 240 MGy, while that of 22.0K in β'-ICl 2 does not vary. Taking account of the suppressed amplitude of the dicyanamide vibration modes in the infrared spectra of the irradiated κ-Cl, we suggest that X-ray irradiation modifies the anion structure related to the CN group, which does not hold in β'-ICl2.
KW - Carrier doping
KW - Mott insulator
KW - X-ray irradiation
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U2 - 10.1016/j.physb.2009.10.043
DO - 10.1016/j.physb.2009.10.043
M3 - Article
AN - SCOPUS:80053607997
SN - 0921-4526
VL - 405
SP - S244-S246
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 11 SUPPL.
ER -