Synthesis and Crystal Structure of the Double Perovskite Ca2-xSrxMnWO6  (x = 0.0, 0.5, 1.0, 1.5, 2.0)

Rundlöf, Håkan; Eriksson, S.-G.; Eriksen, J.; Azad, A.K.

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The Pauling File, p.357
The Effect of Varying Ca-Content on the Structure of High-T_c Superconductor (Ca_xLa_1-x)(Ba_1.75-xLa_0.25+x)Cu₃O_7-δ (x = 0.5, 0.6, and 0.8) Studied by Neutron Powder Diffraction , p.361
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Influence of the Cation Distribution on the Physical Properties of the Diluted Magnetics Li_1.33Ti_1.67O₄/Co₂TiO₄, p.371
Synthesis and Crystal Structure of the Double Perovskite Ca_2-xSr_xMnWO₆ (x = 0.0, 0.5, 1.0, 1.5, 2.0) , p.375
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Home > Materials Science Forum > European Powder Diffraction EPDIC 8 > Synthesis and Crystal Structure of the Double...

Paper Title:

Synthesis and Crystal Structure of the Double Perovskite Ca_2-xSr_xMnWO₆ (x = 0.0, 0.5, 1.0, 1.5, 2.0)

Periodical	Materials Science Forum (Volumes 443 - 444)
Main Theme	European Powder Diffraction EPDIC 8
Edited by	Yvonne Andersson, Eric J. Mittemeijer and Udo Welzel
Pages	375-378
DOI	10.4028/www.scientific.net/MSF.443-444.375
Citation	A.K. Azad et al., 2004, Materials Science Forum, 443-444, 375
Online since	January, 2004
Authors	A.K. Azad, S.-G. Eriksson, Håkan Rundlöf, J. Eriksen
Keywords	Crystal Structure, Double-Perovskite, Magnetisation, Neutron Diffraction, Oxide
Price	US$ 28,-

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Abstract

The double perovskites Ca_2-xSr_xMnWO₆ (x = 0.0, 0.5, 1.0, 1.5, 2.0) have been prepared as pure phases by a conventional solid-state reaction process. Stoichiometric amounts of CaCO₃,SrCO₃, MnO and WO₃ were mixed, ground and calcined in a nitrogen atmosphere. X-ray and neutron powder diffraction (NPD), together with magnetisation measurements were carried out in order to characterise the materials. The NPD and magnetisation measurements, performed at different temperatures, were made in order to correlate the materials structural and magnetic properties. Susceptibility- Temperature (ϰ-T) curves were measured between 2K and 200K in field cooled (FC) and zero-field-cooled (ZFC) modes with an applied field (H) up to 3T. Rietveld analysis of NPD data shows that the samples were B-site ordered perovskites with different types of lattice symmetry. Magnetisation measurements at low temperatures indicate an antiferromagnetic ordering of the magnetic moments.