Anisotropic Transport and Magnetic Properties and Magnetic-Polaron-like Behavior in CeTe2-x.

摘要: Highly anisotropic properties of CeTe 2- x with the layered Cu 2 Sb-type structure have been found by measurements electrical resistivity ρ( T ), magnetic susceptibility χ( ) and magnetization M ( B on single crystals for =0.15–0.18. Both ∥ c ⊥ at K exhibit a metamagnetic transition 0.04 T. saturates rapidly to value 1.06 µ /f.u. around =0.2 T, whereas gradually increases 0.75 5.5 The absence hysteresis remanence in indicates an antiferromagnetic ground state. ratio ρ /ρ from 3 150 cooling 300 1.5 K. sharp peak 6 before onset long-range order N =4.3 K, where exhibits peak. Measurements Hall coefficient R H specific heat C magnetoresistance electron tunneling done polycrystals =0.13 0.18. Electron-tunneling spec...