Mani, Rohini ; Fischer, Michael ; Joy, Joby E. ; Gopalakrishnan, J. ; Jansen, Martin (2009) Ruthenium(IV) pyrochlore oxides: realization of novel electronic properties through substitution at A- and B-sites Solid State Sciences, 11 (1). pp. 189-194. ISSN 1293-2558
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S12932...
Related URL: http://dx.doi.org/10.1016/j.solidstatesciences.2008.04.027
Abstract
We describe an exploratory investigation of the structure and electronic properties of new ruthenium(IV) pyrochlore oxides and their manganese-substituted derivatives. Our investigations have revealed several, hitherto unreported, electronic ground states for these materials: a metallic and Pauli paramagnetic state for BiPbRu2O6.5 that turns into a semiconducting ferromagnetic spin-glass state at 50 K for BiPbRuMnO6.5; a metallic state that likely shows a charge density wave (CDW) instability at 50-225 K for Bi1.50Zn0.50Ru2O6.75 that is suppressed by manganese substitution in Bi1.50Zn0.50Ru1.75Mn0.25O6.50; and a metallic ferromagnetic spin-glass like state for Pb2Ru1.75Mn0.25O6.15. The results indeed affirm the richness of the electronic properties of ruthenium-based metal oxides.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Pyrochlores; Ruthenium Oxides; Electrical Properties; Magnetic Properties; Ferromagnetism; Spin Glass |
| ID Code: | 12307 |
| Deposited On: | 10 Nov 2010 06:31 |
| Last Modified: | 02 Jun 2011 10:22 |
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