Structural and transport properties of Bi-substituted Co2MnO4
Citation:
R. Kumar, S.K. Arora, I.V. Shvets, N.E. Rajeevan, P.P. Pradyumnan, D.K. Shukla, Structural and transport properties of Bi-substituted Co2MnO4, Journal of Applied Physics, 53rd Annual Conference on Magnetism and Magnetic Materials, NOV 11-14, 2008 Austin, TX, Austin, Texas, USA, November 11 - 14, 105, 7, American Physical Society, 2009, 07D910Download Item:
Structural.pdf (Published (publisher's copy) - Peer Reviewed) 129.2Kb
Abstract:
We report the structural and transport properties of the Bi-substituted Co2MnO4 multiferroic materials. Samples synthesized using the solid state reaction route with the composition BixCo2?xMnO4 (<0x<0.3) exhibit a single phase behavior with a cubic spinel structure (space group Fd3m). The lattice parameter was found to increase with the Bi substitution. The dc-conductivity studies reveal that all the samples possess a semiconducting behavior. The resistivity was found to decrease with the increase in the Bi substitution. The dc- as well as ac-conductivity data were analyzed in the light of various conduction models. The dc-conductivity data are explained using the variable range hopping model. The ac conductivity calculated from the dielectric data as a function of temperature and frequency demonstrates the cross over from small polaron tunneling to correlated barrier hopping type conduction in these materials.
Author's Homepage:
http://people.tcd.ie/ivchvetshttp://people.tcd.ie/aroras
Description:
PUBLISHEDAustin, Texas, USA
Author: ARORA, SUNIL KUMAR; SHVETS, IGOR
Other Titles:
Journal of Applied Physics53rd Annual Conference on Magnetism and Magnetic Materials, NOV 11-14, 2008 Austin, TX
Publisher:
American Physical SocietyType of material:
Conference PaperCollections:
Series/Report no:
1057
Availability:
Full text availableKeywords:
Atomic, molecular and chemical physics, Co2MnO4Licences: