Electrical resistivity and magnetoresistance of CeB6 |
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Authors: | A Takase K Kojima T Komatsubara T Kasuya |
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Institution: | Department of Physics, Tohoku University, Sendai 980, Japan |
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Abstract: | Electrical resistivity and magnetoresistance of CeB6 single crystal have been measured in the temperature range from 1.3 to 300 K under the magnetic field up to 85 kOe. Three characteristic phases are distinguished consistently with other measurements. The Kondo like behaviour in the resistivity observed in the high temperature phase is fitted by the conventional form for the dilute Kondo state with the Kondo temperature TK = 5 ~ 10K and the unitarity limit resistivity cm/Ce-atom. The negative magnetoresistance in the middle phase is stronger with increasing magnetic field and with decreasing temperature suggesting rapid destruction of the Kondo state. The magnetoresistance in the low temperature phase exhibits some anomalies suggesting sub-phases corresponding to several kinds of spin ordering. |
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