Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/6830
Title: Synthesis, structure and magnetic behaviour of mixed metal leucophosphite
Author: Shi, Fa-Nian
dos Santos, Antonio Moreira
Cunha-Silva, Luis
Costa, Benilde F. O.
Klinowski, Jacek
Paz, Filipe A. Almeida
Amaral, Vitor S.
Rocha, Joao
Trindade, Tito
Keywords: Hydrothermal synthesis
Leucophosphite
Ferric phosphate
Vanadium
Magnetism
Issue Date: 2008
Publisher: Elsevier
Abstract: A synthetic analogue of leucophosphite, an iron phosphate, was synthesized hydrothermally at 180 °C and its chemical composition determined to be {K[(FeV)(PO4)2(OH)(H2O)]·H2O}. The compound crystallizes in the monoclinic P21/c space group, with a=9.7210(19) Å, b=9.6500(19) Å, c=12.198(4) Å and β=128.569(18)°. While the original all-iron compound is reported to be antiferromagnetic, the inclusion of substitutional vanadium(III) ions renders the structure ferrimagnetic. Diffraction studies and magnetic characterization show that iron and vanadium are disordered throughout the crystallographic sites. The magnetic behaviour of this system was interpreted in terms of a classic ferrimagnetic mean field model, consisting of two antiferromagnetically coupled non-crystallographic “sublattices”.
Peer review: yes
URI: http://hdl.handle.net/10773/6830
DOI: 10.1016/j.jssc.2008.02.027
ISSN: 0022-4596
Appears in Collections:DQ - Artigos

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