Physical Properties of 7r-d Interaction-Based Molecular Conducting Magnet (EDO-TTFBr2)2FeC14 Under Pressure
The electrical resistivities and magnetoresistances (MR) of a radical ion salt (EDO-TTFBr2)2FeC14 and its diamagnetic analogue (EDO-TTFBr2)2GaCI4 are investigated under pressures. The resistivity of the FeC14 salt shows two anomalies due to the successive transitions of the it-electron layer, and an...
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Published in | Journal of low temperature physics Vol. 142; no. 3-4; pp. 477 - 480 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
01.02.2006
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Abstract | The electrical resistivities and magnetoresistances (MR) of a radical ion salt (EDO-TTFBr2)2FeC14 and its diamagnetic analogue (EDO-TTFBr2)2GaCI4 are investigated under pressures. The resistivity of the FeC14 salt shows two anomalies due to the successive transitions of the it-electron layer, and another anomaly coming from the long-range magnetic ordering of the FeCti layer. For the GaC14 salt negative MI? is observed in the low-field region, suggesting a decrease of the SDW gap by applying the magnetic field. The MR of the FeCI4 salt shows two abrupt increases, which proves the presence of field-induced successive transitions in the composite 7t-d spin system. The field dependence of the MR of this salt can be qualitatively explained based on the frustrated magnetic structure of it- and d-electron spins interacting with each other. |
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AbstractList | The electrical resistivities and magnetoresistances (MR) of a radical ion salt (EDO-TTFBr2)2FeC14 and its diamagnetic analogue (EDO-TTFBr2)2GaCI4 are investigated under pressures. The resistivity of the FeC14 salt shows two anomalies due to the successive transitions of the it-electron layer, and another anomaly coming from the long-range magnetic ordering of the FeCti layer. For the GaC14 salt negative MI? is observed in the low-field region, suggesting a decrease of the SDW gap by applying the magnetic field. The MR of the FeCI4 salt shows two abrupt increases, which proves the presence of field-induced successive transitions in the composite 7t-d spin system. The field dependence of the MR of this salt can be qualitatively explained based on the frustrated magnetic structure of it- and d-electron spins interacting with each other. |
Author | Enoki, T Miyazaki, A Iyoda, M Kuwatani, Y Watanabe, R Ogura, E Aimatsu, M |
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