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X-ray powder diffraction and magnetic study of nominal Zn1-xNdxCr2Se4 – compounds (x = 0.05, 01)

Published online by Cambridge University Press:  14 November 2013

Izabela Jendrzejewska ,
Paweł Zajdel ,
Ewa Maciążek ,
Maria Sozańska  and
Tomasz Goryczka
Izabela Jendrzejewska*
Affiliation:
University of Silesia, Institute of Chemistry, Szkolna 9, 40-006 Katowice, Poland
Paweł Zajdel
Affiliation:
University of Silesia, Institute of Physics, Uniwersytecka 4,40-007 Katowice, Poland
Ewa Maciążek
Affiliation:
University of Silesia, Institute of Chemistry, Szkolna 9, 40-006 Katowice, Poland
Maria Sozańska
Affiliation:
Silesian University of Technology, 40-019 Krasińskiego 8, Poland
Tomasz Goryczka
Affiliation:
University of Silesia, Institute of Chemistry and Physics of Metals, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
*
*Corresponding author e-mail: [email protected]
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Abstract

Polycrystalline compounds in the Zn1-xNdxCr2Se4 system were prepared by solid state reaction using selenides (ZnSe, Cr2Se3) and pure elements (Nd, Se) as starting materials. The structural properties were determined by X-ray diffraction and the chemical composition confirmed by SEM-EDX. The observed symmetry is cubic, space group Fd3m, while the lattice parameter varies from 10.4955(7)Å to 10.4976(7)Å, and is larger than for the pure matrix. The solubility limit for the current synthesis route lies below x = 0.1. The magnetic moments, effective and saturation, increase with increasing amount of Nd ions. The Neel temperature TN and ΘCW drop, respectively, to 17.4K and 81K for x = 0.1, independently indicating that neodymium is incorporated into the spinel lattice and promotes antiferromagnetic coupling between the Cr3+ ions.

Keywords

spinelsolid-state reactionX-ray powder diffractionRietveld refinementmagnetic properties
Type
Technical Articles
Information
Powder Diffraction , Volume 28 , Supplement S2 , September 2013 , pp. S75 - S85
Copyright
Copyright © International Centre for Diffraction Data 2013 

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