Journal ArticleDOI
Magnetic phase diagram of spinel spin-glasses
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TLDR
In this paper, a modified magnetic phase diagram is suggested for the spinel system (AB2O4) in which the A and B sites are partially (or completely) occupied by magnetic atoms.Abstract:
The article by Villain [Z. Phys. B — Condensed Matter33, 31 (1979)] is discussed and a modified magnetic phase diagram is suggested for the spinel system (AB2O4) in which theA andB sites are partially (or completely) occupied by magnetic atoms. This diagram takes into account the antiferromagnetic exchange interactionsJAA,JBB andJAB between nearest neighbor cations of various types. Regions of paramagnetic, antiferromagnetic, ferrimagnetic and possible spin glass behaviour are indicated on the diagram.read more
Citations
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Journal ArticleDOI
Magnetic structures in substituted ferrites
J L Dormann,M Nogues +1 more
TL;DR: In this article, the magnetic structures of substituted ferrites are reviewed, focusing on the more usual case of a local canted state, and experimental phase diagrams (tetrahedral-octahedral iron concentrations) are established to distinguish between different magnetic regions.
Journal ArticleDOI
Structure and Magnetism in λ-MnO2. Geometric Frustration in a Defect Spinel
TL;DR: In this article, the authors show that the susceptibility is remarkably field dependent in the temperature range near TN for some samples with larger lithium contents, which might be understood in terms of field-induced short-range ferromagnetic correlations.
Book ChapterDOI
Chapter 3 Progress in spinel ferrite research
TL;DR: In this paper, the progress in spinel ferrite research is discussed and a large number of oxides with a metal-oxygen ratio of 0.75 as composition is known to crystallize into the spinel structure.
Book ChapterDOI
Mössbauer Effect Studies of Oxidic Spinels
TL;DR: In this article, the crystal structure of the mineral spinel, MgAl2O4, was determined by Bragg,1 and Nishikawa2 in 1915, and many metal oxides and mixed-metal oxides have been found to possess the same structure, referred to as spinel compounds or spinels.
Journal ArticleDOI
Magnetism of the nanostructured spinel zinc ferrite
TL;DR: In this paper, a magnetic transformation from the antiferromagnetic phase to a ferrimagnetic-like behavior is observed by neutron diffraction, indicating a decrease in particle size and a simultaneous increase in the inversion parameter.
References
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Journal ArticleDOI
Propriétés magnétiques des ferrites ; ferrimagnétisme et antiferromagnétisme
Journal ArticleDOI
Antiferromagnetic Arrangements in Ferrites
TL;DR: In this paper, the antiferromagnetic exchange interactions within the two magnetic sublattices are considered and the ground state may have an antiparallel arrangement of the spins on the two sites.
Journal ArticleDOI
The magnetic structure of Co3O4
TL;DR: In this paper, an anomalously large magnetic interaction between ions in the A sites of Co3O4 was observed by magnetic susceptibility and neutron diffraction, which was suggested that the exchange mechanism involves indirect exchange through the tightly bound octahedral complex about the Co3+ ion.
Journal ArticleDOI
Magnetic Structures in FeCr2S4 and FeCr2O4
TL;DR: In this article, the magnetic properties of FeCr2S4 were investigated by the powder neutron diffraction technique and it was established that both compounds are normal spinels with sulfur and oxygen parameters u=0.384 and 0.386, respectively.