Structural and magnetic anomalies among the spin-chain compounds, Ca3Co1+xIr1-xO6
| dc.creator | Rayaprol, S. | |
| dc.creator | Sengupta, Kausik | |
| dc.creator | Sampathkumaran, E. V. | |
| dc.date | 2003-09-30 | |
| dc.date.accessioned | 2026-07-07T02:53:53Z | |
| dc.date.available | 2026-07-07T02:53:53Z | |
| dc.description | The results of x-ray diffraction, and ac and dc magnetization as a function of temperature are reported for a new class of spin-chain oxides, Ca3Co1+xIr1-xO6. While the x= 0.0, 0.3, 0.5 and 1.0 are found to form in the K4CdCl6-derived rhombhohedral (space group R-3c) structure, the x= 0.7 composition is found to undergo a monoclinic distortion in contrast to a literature report. Apparently, the change in the crystal symmetry with x manifests itself as a change in the sign of paramagnetic Curie temperature for this composition as though magnetic coupling sensitively depends on such crystallographic distortions. All the compositions exhibit spin-glass anomalies with an unusually large frequency dependence of the peak temperature in ac susceptibility in a temperature range below 50 K, interestingly obeying Voger-Fulcher relationship even for the stoichiometric compounds. | |
| dc.description | Special Issue of Proc. Indian Academy of Sciences (Chemical Sciences) In press | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0309700 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0309700 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22335 | |
| dc.subject | Materials Science | |
| dc.title | Structural and magnetic anomalies among the spin-chain compounds, Ca3Co1+xIr1-xO6 | |
| dc.type | text |