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Magnetic structure
About: Magnetic structure is a research topic. Over the lifetime, 10787 publications have been published within this topic receiving 207143 citations.
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TL;DR: The crystal structure of Ca2Fe2O5 has been studied as a function of temperature up to 1000°C as discussed by the authors, and the magnetic structure was refined in space group Pcm′n′.
127 citations
TL;DR: Magnetic and neutron diffraction experiments on TbMnO3 powder and single crystals are reported in this paper, where a sine-wave ordering of the Mn3+ moments is found with the wave-vector along the b-axis kMn = (0 0.28 0).
Abstract: Magnetic and neutron diffraction experiments on TbMnO3 powder and single crystals are reported. Below 40 K a sine-wave ordering of the Mn3+ moments is found with the wave-vector along the b-axis kMn = (0 0.28 0). Below 7 K a short-range ordering of the Tb3+ moments takes place with a different wave-vector kTb = (0 0.415 0).
127 citations
TL;DR: In this paper, the stability of particular magnetic ordering schemes is discussed in terms of an isotropic RKKY mechanism, and the crystal structure and magnetic parameters are given, while the magnetic phase transition from a LSW type structure to collinear antiferromagnetism of +-+- type is found.
127 citations
TL;DR: In this paper, the formation of the ordered phase and the possible magnetic structures of ordered manganese alloys were discussed and the dependence of lattice parameters on concentration and temperature was determined.
Abstract: Investigations of the magnetic properties in the ordered CuAu‐I‐type manganese alloys are reviewed. The formation of the ordered phase and the possible magnetic structures are discussed. New experimental results for the Mn‐Ni, Mn‐Pd, and Mn‐Pt systems are reported.Neutron diffraction shows the basic antiferromagnetic structure to be the same for all the alloys investigated. In MnPt a magnetic‐structure transformation has been observed. Below 800°K the magnetic moments turn from the basal plane gradually to the tetragonal axis. The variation of the transition temperature in the Mn‐Pt system as well as that of the Neel temperature in the Mn‐Ni, Mn‐Pd, and Mn‐Pt systems with concentration were measured and are theoretically analyzed.The dependence of lattice parameters on concentration and temperature was determined. The lattice parameters suffer a significant but continuous change near the Neel temperature which is attributed to Mn‐Mn exchange interaction.Magnetic susceptibility measurements support the neu...
126 citations
TL;DR: A Landau expansion of symmetry-allowed terms in the free energy demonstrates that chiral magnetic order can give rise to a pseudoelectric field, whose temperature dependence agrees with experiment.
Abstract: We report the first direct transition from a paramagnetic and paraelectric phase to an incommensurate multiferroic in the triangular lattice antiferromagnet $\mathrm{RbFe}({\mathrm{MoO}}_{4}{)}_{2}$. Ferroelectricity is observed only when the magnetic structure has chirality and breaks inversion symmetry. A Landau expansion of symmetry-allowed terms in the free energy demonstrates that chiral magnetic order can give rise to a pseudoelectric field, whose temperature dependence agrees with experiment.
126 citations