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HomeKey Engineering MaterialsKey Engineering Materials Vol. 547Structural and Magnetic Studies of Zn Doped...

Structural and Magnetic Studies of Zn Doped LaRh_1-2xCu_2xO₃

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Abstract:

Two series of Zn doped Rh perovskites LaRh1-2xCux ZnxO3 and La0.75Pb0.25Rh1-2xCuxZnxO3 (0≤ x ≤0.25) were synthesised by solid-state methods and their crystallographic, magnetic, and electric properties investigated. Both series have an orthorhombic perovskite-type structure in space group Pbnm. The increase in Zn content has an obvious impact on the electron delocalisation in which the shift in the average valency of Cu and Rh (+2.5 and +3.5) has resulted in a reduction in cell volumes and an increase in the effective magnetic moments. The Curie–Weiss magnetization curves measured between 5-300K are indicative of antiferromagnetism. The addition of Pb to the A- site decreases the conductivity as anticipated.

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Periodical:

Key Engineering Materials (Volume 547)

Pages:

173-180

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.547.173

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Online since:

April 2013

Authors:

L. A. Awin, Brendan J. Kennedy, M. Avdeev

Keywords:

Electron Delocalisation, Magnetisation, Perovskite

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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