X-ray irradiation effect on magnetic properties of Dimer-Mott insulators: κ-(BEDT-TTF)2Cu[N(CN)2]Cl and β'-(BEDT-TTF) 2ICl2

Naoki Yoneyama, Takahiko Sasaki, Norio Kobayashi, Ko Furukawa, Toshikazu Nakamura

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)S244-S246
JournalPhysica B: Condensed Matter
Issue number11 SUPPL.
Publication statusPublished - 2010 Jun 1


  • Carrier doping
  • Mott insulator
  • X-ray irradiation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'X-ray irradiation effect on magnetic properties of Dimer-Mott insulators: κ-(BEDT-TTF)<sub>2</sub>Cu[N(CN)<sub>2</sub>]Cl and β'-(BEDT-TTF) <sub>2</sub>ICl<sub>2</sub>'. Together they form a unique fingerprint.

Cite this