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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: In this article, the magnetic properties of an array of holes in an Fe film using the magneto-optic Kerr effect were investigated and the theory of diffraction from an array to include magnetooptic effects was developed.
Abstract: We have investigated the magnetic properties of an array of holes in an Fe film using the magneto-optic Kerr effect. We develop the theory of diffraction from an array to include magneto-optic effects. The theory allows us to interpret the differences in the magnetic loops observed on the reflected beam and those observed on diffracted spots. The latter contain more detailed information on the magnetic structure in the vicinity of the holes and allow us to infer differences in the switching mechanism for fields applied along the easy and hard axes.
59 citations
TL;DR: In this paper, the atomic and magnetic structure of fcc Fe grown on Cu(100) are determined using spin-density-functional theory and the full-potential linear muffin-tin orbital method.
Abstract: The atomic and magnetic structure of fcc Fe grown on Cu(100) are determined using spin-density-functional theory and the full-potential linear muffin-tin orbital method. Different types of interlayer and intralayer magnetism are investigated. For films of four up to eleven adsorbed Fe layers our ab initio total-energy calculations always give a ferromagnetic intralayer spin ordering of the Fe atoms. The surface and first subsurface layers couple ferromagnetically, whereas the deeper ones show interlayer antiferromagnetic coupling. This magnetic ordering is accompanied by a 3.9% expansion of the first layer spacing and a 1% contraction of the second, which agree well with low-energy electron diffraction analyses. We link the results to ground-state calculations for fcc iron.
59 citations
TL;DR: In this article, a combination of photoemission and x-ray magnetic circular dichroism (XMCD) was used to characterize the growth and the electronic as well as magnetic structure of cobalt layers intercalated in between graphene and Ir(111).
Abstract: Using a combination of photoemission and x-ray magnetic circular dichroism (XMCD), we characterize the growth and the electronic as well as magnetic structure of cobalt layers intercalated in between graphene and Ir(111). We demonstrate that magnetic ordering exists beyond one monolayer intercalation, and determine the Co orbital and spin magnetic moments. XMCD from the carbon edge shows an induced magnetic moment in the graphene layer, oriented antiparallel to that of cobalt. The XMCD experimental data are discussed in comparison to our results of first-principles electronic structure calculations. It is shown that good agreement between theory and experiment for the Co magnetic moments can be achieved when the local-spin-density approximation plus the Hubbard $U$ ($\text{LSDA}\phantom{\rule{2.pt}{0ex}}+\phantom{\rule{2.pt}{0ex}}U$) is used.
59 citations
TL;DR: In this paper, a first-order change in the volume of the unit cell as well as a change in electrical resistivity was observed in manganese antimonides modified with V, Co, Cu, Zn, Ge, and As.
Abstract: Transformations from ferrimagnetic to antiferromagnetic ordering with decreasing temperature have now been observed in manganese antimonides modified with V, Co, Cu, Zn, Ge, and As as well as with Cr. The magnetic structure change is accompanied by a first-order change in the volume of the unit cell as well as a change in electrical resistivity. Crystallographic data for these materials in the exchange inversion region and at room temperature are presented as a function of the concentration of modifying element.
59 citations
TL;DR: In this paper, critical properties of a Heisenberg antiferromagnet on a triangular lattice were investigated experimentally using a quasi-two-dimensional antiferromaagnet VCl 2 by means of neutron scattering.
Abstract: Critical properties of a Heisenberg antiferromagnet on a triangular lattice are investigated experimentally using a quasi-two-dimensional antiferromagnet VCl 2 by means of neutron scattering. It is found that VCl 2 shows characteristic critical behaviors of two and three dimensional models. A little above T N , the line shape of χ( Q ) is found to be represented by the Ornstein-Zernike form (κ 2 + q 2 ) -1 . This suggests the existence of magnetic point defects which were predicted in the two dimensional model. The measurecl critical exponents are β=0.20±0.02, γ=1.05±0.03, and ν=0.62±0.05, in agreement with the theoretical work for three dimensional SO(3) systems. Successive phase transitions due to a small Ising anisotropy were found at T N1 =35.88±0.01 K and T N2 =35.80±0.01 K. The spin structure and the dispersion relation of the spin wave well below T N are also determined.
59 citations