Journal ArticleDOI
Magnetic ordering of rare earth monochalcogenides. I. Neutron diffraction investigation of CeS, NdS, NdSe, NdTe and TbSe
Reads0
Chats0
TLDR
In this paper, the magnetic structures and ordered moments have been determined at 4.2K for the metallic antiferromagnets CeS, NdS and TbSe by means of neutron diffraction.Abstract:
The magnetic structures and ordered moments have been determined at 4.2K for the metallic antiferromagnets CeS, NdS, NdSe, NdTe, and TbSe with NaCl structure by means of neutron diffraction. In contrast to the monopnictides, the monochalcogenides of both light and heavy rare earths have FCC type II antiferromagnetic ordering at low temperatures similar to FeO and MnO. Except NdS, where the magnetic moments are tilted by 24 degrees out of the (111) direction, the moments point along the inversion triad which leads to rhombohedral symmetry of the magnetic structure (Shubnikov group R13c). As a consequence of magnetoelastic interactions the FCC lattice of TbSe is rhombohedrally distorted at 4.2K.read more
Citations
More filters
Journal ArticleDOI
First-principles Calculations of Structural, Magnetic Electronic and Optical Properties of Rare-earth Metals TbX (X=N, O, S, Se)
Leila Hasni,Mohammed Ameri,Djillali Bensaid,Ibrahim Ameri,Smain Mesbah,Yarub Al-Douri,José Coutinho +6 more
TL;DR: In this paper, the structural, magnetic, electronic and optical properties of Terbium-based binaries (TbX) (X = N, O, S and Se) in two cubic structures NaCl and CsCl have been investigated.
Journal ArticleDOI
Profile analysis of powder neutron diffraction data: Its scope, limitations, and applications in solid state chemistry
A.K. Cheetham,J.C. Taylor +1 more
TL;DR: Profile analysis of powder neutron diffraction data is reviewed in this paper, and some recent examples are described in detail, including Fourier analysis, profile refinement of X-ray data, and pulsed neutron sources.
Book ChapterDOI
Chapter 3 Magneto-optical kerr spectra
TL;DR: The theoretical explanation of magneto-optical Kerr effect (MOKE) spectra was at that time in its infancy, and consequently all the insight that theory could give in the microscopic mechanism leading to large Kerr rotations was mainly speculative, because nothing could be proven by first-principles calculations.
Journal ArticleDOI
Magnetic Ordering in Cerium Monochalcogenides: A Test Case forεExpansions withn=4
TL;DR: In this paper, it was shown that CeSe and CeTe are type-II antiferromagnets with the moment along the propagation vector and the phase transitions are continuous with the critical exponent for the magnetization ε = 0.02.
Book ChapterDOI
Chapter 2 Magneto-optical spectroscopy of f-electron systems
W. Reim,J. Schoenes +1 more
TL;DR: In this paper, the authors discuss the spectroscopic aspect of magneto-optics with the goal to relate the experimentally determined magnetooptical spectra to electronic transitions and provide directions for searching for improved magneto−optical materials.
References
More filters
Journal ArticleDOI
The raising of angular momentum degeneracy of f-Electron terms by cubic crystal fields
K.R. Lea,M.J.M. Leask,W. P. Wolf +2 more
TL;DR: In this article, the effect of cubic crystal field Hamiltonians with both fourth and sixth degree terms and acting on an angular momentum J, has been investigated as a function of the ratio between the fourth and six degree terms.
Journal ArticleDOI
Magnetic Structures of MnO, FeO, CoO, and NiO
TL;DR: In this paper, the antiferromagnetic arrangement of moments in MnO, FeO, CoO, and NiO have been investigated by powder neutron diffraction and the results for the four oxides are consistent with a structure in which the magnetic moments are arrayed in ferromagnetic sheets parallel to (111) planes, and the direction of magnetization in neighboring planes is antiparallel.
Journal ArticleDOI
for The Neutron Diffraction Commission). Coherent neutron scattering amplitudes
TL;DR: A list is given in this paper which summarizes additions and significant changes which have been reported since the publication of a full list of scattering amplitudes in 1972 [Acta Cryst. (1972). A28, 357-358].
Journal ArticleDOI
A note on the magnetic intensities of powder neutron diffraction
TL;DR: In this paper, general intensity formulas of powder neutron diffraction lines are given for magnetic structures with a single spin-axis as a function of the spin direction with respect to the crystallographic axes.
Journal ArticleDOI
Neutron diffraction investigation of the magnetic properties of compounds of rare-earth metals with group v anions
TL;DR: The magnetic properties of heavy rare-earth compounds with the NaCl-type structure have been investigated at temperatures between 295 and 1.3 K by neutron diffraction experiments on powdered specimens.