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Crystal Chemistry and Magnetic Properties of SeCu1−xZnxO3(0≤x≤1) Perovskites

✍ Scribed by R. Escamilla; J.M. Gallardo-Amores; E. Morán; M.A. Alario-Franco

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
325 KB
Volume
168
Category
Article
ISSN
0022-4596

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✦ Synopsis

The effects of zinc substitution in the structural and magnetic properties of the orthorhombic solid solution SeCu 1Àx Zn x O 3 have been studied. Rietveld refinements of the X-ray diffraction patterns indicate that the zinc ions occupy the copper sites. This replacement induces some changes in the Cu-O bond lengths and /Cu-O-CuS bond angles. Magnetization vs temperature measurements show a fast decrease in the Weiss constant that reveals a direct quadratic relationship with the increase of the average /Cu-O-CuS bond angle. Besides, the introduction of a non-magnetic cation in the B-positions in the structure of SeCu 1Àx Zn x O 3 system, progressively decreases the ferromagnetic interactions.

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