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Title: | Crystal chemistry and magnetic properties of SeCu1-xZnxO3 (0-<= x <= 1) perovskites |
Authors: | Escamilla, R Gallardo-Amores, JM Moran, E Alario-Franco, MA |
Issue Date: | 2002 |
Abstract: | The effects of zinc substitution in the structural and magnetic properties of the orthorhombic solid solution SeCu1-xZnxO3 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-Cu] 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-Cu] bond angle. Besides, the introduction of a non-magnetic cation in the B-positions in the structure of SeCu1-xZnO3 system, progressively decreases the ferromagnetic interactions. (C) 2002 Elsevier Science (USA). |
URI: | http://hdl.handle.net/11154/2501 |
ISSN: | 0022-4596 |
Appears in Collections: | Ciencias
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