Structural and magnetic studies of A site doped LaRh1-xCuxO3(A=Ca2+, Sr2+, Pb2+ and Bi3+)
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Date
2012-10-18
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Elsevier Science Ltd
Abstract
A site doped Rh perovskites with general formula La0.75A0.25Rh0.7Cu0.3O3 and La0.75A0.25Rh0.5Cu0.5O3 (A=Ca2+, Sr2+, Pb2+and Bi3+) were synthesized by solid-state methods and their crystallographic, magnetic, and electric properties investigated. Doping by divalent cations resulted in much lower cell volumes and octahedral distortions than doping with a trivalent oxide. The Pb2+ and Bi3+ (6s2) doped oxides exhibited the lowest magnetic moments and the highest activation energies. Magnetization curves are indicative of antiferromagnetic behavior. The addition of Ca2+, Sr2+, Pb2+and Bi3+cations to the A-site decreases the conductivity.© 2013, Elsevier Ltd.
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Keywords
Copper, Perovskite, Rhodium, Lanthanum, Bismuth, Lead
Citation
Awin, L., Kennedy, B.J., & Avdeev, M. (2013). Structural and magnetic studies of a site doped larh1-xcuxo3(a = ca2+, sr2+, pb2+ and bi3+). Paper presented to The 8th Asian Meeting on Electroceramics (AMEC-8), 1-5 July 2012, Penang, Malaysia. In Kim, E. O., Zhu, W., Nan, W. W., Wang, H., & Hock, O. (Eds). Ceramics International, 39, (Supplement 1), S233-S237. doi:10.1016/j.ceramint.2012.10.068