Issue 15, 2004
From the journal:

Physical Chemistry Chemical Physics

Columbite-type FexMn1−xNb2O6 solid solution: structural and magnetic characterization

Cristina Tealdi,a   Maria Cristina Mozzati,b   Lorenzo Malavasi,*a   Tiziana Ciabattoni,c   Roberta Amanteaa  and  Carlo B . Azzonib  

* Corresponding authors

a Dipartimento di Chimica Fisica “M. Rolla”, INSTM, IENI/CNR Unità di Pavia of Università di Pavia, V.le Taramelli 16, Pavia, Italy
E-mail: lorenzo.malavasi@unipv.it

b INFM, Unità di Pavia and Dipartimento di Fisica “A. Volta”, Università di Pavia, Via Bassi 6, Pavia, Italy

c Centro di Calcolo of Università di Pavia, via Ferrata 1, Pavia, Italy

Abstract

This paper deals with the columbite FexMn1−xNb2O6 (x = 0, 0.25, 0.50, 0.75 and 1) solid solution. After synthesis under vacuum, structural and magnetic properties were studied by means of X-ray diffraction, Rietveld refinement, electron paramagnetic resonance and magnetization measurements. This investigation showed that (i) the homogeneity range of the solid solution is complete and the A (Fe and/or Mn) cations are randomly distributed in the A-octahedral sites of the structure; (ii) the oxidation state of Fe and Mn is always +2; (iii) there is no cation disorder between the A and Nb sites; (iv) an antiferromagnetic transition is present only for the two end-members (FeNb2O6 and MnNb2O6).

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Article information

DOI
https://doi.org/10.1039/B405666C
Article type
Paper
Submitted
16 Apr 2004
Accepted
21 May 2004
First published
08 Jun 2004

Phys. Chem. Chem. Phys., 2004,6, 4056-4061

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Columbite-type FexMn1−xNb2O6 solid solution: structural and magnetic characterization

C. Tealdi, M. Cristina Mozzati, L. Malavasi, T. Ciabattoni, R. Amantea and C. B. . Azzoni, Phys. Chem. Chem. Phys., 2004, 6, 4056 DOI: 10.1039/B405666C

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