Neutron studies of cation disorder in Zn2FeV3O11−δ

Competing Magnetic Interactions in Zn3Fe4V6O24Studied by Electron Paramagnetic Resonance

“…Multicomponent vanadate M 2 FeV 3 O 11−x and M 3 Fe 4 V 6 O 24−x (M(II) -magnetic and non-magnetic metal ions) have displayed extraordinary physical properties, especially due to the presence of magnetic ordered states (long-or short-range order) which could be connected to disorder phenomena observed * corresponding author; e-mail: gzolnierkiewicz@ps.pl (675) in cation positions or introduced by oxygen deficiency [1][2][3][4][5][6][7]. Neutron diffraction study and the analysis of the crystal structure have shown that for the Zn 2 FeV 3 O 11−x compound the cation disorder phenomena are more pronounced than for the Zn 3 Fe 4 V 6 O 24−x compound [5,7].…”

“…Neutron diffraction study and the analysis of the crystal structure have shown that for the Zn 2 FeV 3 O 11−x compound the cation disorder phenomena are more pronounced than for the Zn 3 Fe 4 V 6 O 24−x compound [5,7]. The magnetic and EPR measurements of Zn 2 FeV 3 O 11−x vanadate have shown that magnetic inhomogeneity arising from the high spin iron(III) ions (3d 5 ,…”

Neutron diffraction study of Zn3Fe4V6O24

“…The scientific and technological interest in the multicomponent vanadate oxide system has led many investigators to examine the structure and physical properties of these compounds [1][2][3][4][5][6]. The temperature variation of magnetic and electron paramagnetic resonance (EPR) properties of the Zn 2 FeV 3 O 11 compound have shown an inherent magnetic inhomogeneity in the iron(III) system [4].…”

“…The temperature variation of magnetic and electron paramagnetic resonance (EPR) properties of the Zn 2 FeV 3 O 11 compound have shown an inherent magnetic inhomogeneity in the iron(III) system [4]. The neutron powder diffraction study of Zn 2 FeV 3 O 11 has shown that iron(III) and zinc(II) ions were disordered in their corresponding subsystems, and the distribution on the octahedral and the trigonal bipyramidal sites were non-statistical [5]. The reaction of FeVO 4 with the pyrovanadates of M 2 V 2 O 7 (M = Zn(II) and Mg(II)) could form the Zn 2 FeV 3 O 11 and Mg 2 FeV 3 O 11 compounds with disordered cation systems [3,5].…”

“…The neutron powder diffraction study of Zn 2 FeV 3 O 11 has shown that iron(III) and zinc(II) ions were disordered in their corresponding subsystems, and the distribution on the octahedral and the trigonal bipyramidal sites were non-statistical [5]. The reaction of FeVO 4 with the pyrovanadates of M 2 V 2 O 7 (M = Zn(II) and Mg(II)) could form the Zn 2 FeV 3 O 11 and Mg 2 FeV 3 O 11 compounds with disordered cation systems [3,5]. Recently, new compounds M 3 Fe 4 V 6 O 24 (M = Zn, Co, Mg) have been obtained as a product of a reaction between FeVO 4 and M 3 V 2 O 8 (M = Zn, Co, Mg) and they were crystallized in the triclinic space group P1 [7,8].…”