ISSN:
1573-7357
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract IrTe 2 has the CdI 2 structure and CuIr 2 Te 4 has a defect-NiAs structure at room temperature. Both compounds show basically metallic behavior. Magnetic and resistance anomalies, showing a hysteresis in temperature, have been found in IrTe 2 and CuIr 2 Te 4 . On heating, the resistivity ρ exhibits a hump-shaped maximum around 270 and 250 K for IrTe 2 and CuIr 2 Te 4 , respectively. The magnetic susceptibility χ reveals a step-like anomaly which gives evidence of a difference in the value of the Pauli paramagnetism between the high- and low temperature sides, corresponding to the anomalous behavior in ρ. These anomalies of ρ and χ in IrTe 2 originate from a gradual structure deformation with temperature, where the crystal symmetry changes from high temperature trigonal $$P\overline 3 m1$$ to low temperature monoclinic C2/m.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1022546928480
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