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

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

doi:10.4028/www.scientific.net/MSF.443-444.375

Paper Titles

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
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Synthesis, Cation Distribution and Crystal Structure of the Spinel System Zn_xNi_1-xFeCrO₄ (0.2 ≤ x ≤ 0.8)
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Influence of the Cation Distribution on the Physical Properties of the Diluted Magnetics Li_1.33Ti_1.67O₄/Co₂TiO₄
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Synthesis and Crystal Structure of the Double Perovskite Ca_2-xSr_xMnWO₆ (x = 0.0, 0.5, 1.0, 1.5, 2.0)
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Low Temperature Magnetic Structure of CrNiAs
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A Neutron Diffraction Study of Magnetically Ordered Ferroelectric Materials
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The Evolution of the Antiferromagnetic Structure of the Terbium Titanium Oxysulfide Tb₂Ti₂S₂O₅between 5K and 1.4K
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Presence of a Spin Glass State in Antiferromagnetic Tb₂CuIn₃
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HomeMaterials Science ForumMaterials Science Forum Vols. 443-444Synthesis and Crystal Structure of the Double...

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

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.