Resistance and susceptibility anomalies in IrTe{sub 2} and CuIr{sub 2}Te{sub 4}
IrTe{sub 2} has the CdI{sub 2} structure and CuIr{sub 2}Te{sub 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{sub 2} and CuIr{sub 2}Te{sub 4}. On heating, the resistivity {rho} exhibits a hump-shaped maximum around 270 and 250 K for IrTe{sub 2} and CuIr{sub 2}Te{sub 4}, respectively. The magnetic susceptibility {chi} 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 {rho}. These anomalies of {rho} and {chi} in IrTe{sub 2} originate from a gradual structure deformation with temperature, where the crystal symmetry changes from high temperature trigonal P{bar 3}m1 to low temperature monoclinic C2/m.
- Research Organization:
- Muroran Inst. of Tech., Hokkaido (JP)
- OSTI ID:
- 20015282
- Journal Information:
- Journal of Low Temperature Physics, Vol. 117, Issue 5-6; Conference: International Conference on Physics and Chemistry of Molecular and Oxide Superconductors, Stockholm (SE), 07/28/1999--08/02/1999; Other Information: PBD: Dec 1999; ISSN 0022-2291
- Country of Publication:
- United States
- Language:
- English
Similar Records
Coupled In/Te and Ni/vacancy ordering and the modulated crystal structure of a B8 type, Ni{sub 3{+-}}{sub x}In{sub 1-y}Te{sub 2+y} solid solution phase
Vacancy ordering and bonding competition in the group 9 tellurides M{sub x}Te{sub 2} (M = Rh, Ir; 0.75 {le} x {le} 2): A theoretical study