Chapter 5 Magnetic properties of binary rare-earth 3d-transition-metal intermetallic compounds

Franse, J.J.M.; Radwański, R. J.

doi:10.1016/s1567-2719(05)80046-0

Cited by 144 publications

(82 citation statements)

References 514 publications

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“…Evidently, this difference reflects a strong radial dependence of the transferred field in the range of the interatomic distances between nonmagnetic atoms and its Fe nearest neighbors in the range %2.5 to 3.0 # e [16]. Indeed, in Fe r(Cd±Fe) = 2.51 # e, whereas in the Laves phases it is close to 3 # e. Cd-PAC spectra for GdFe 2 and YbFe 2 at 300 K. The solid curves are the fits assuming pure magnetic hyperfine interaction…”

Section: Resultsmentioning

confidence: 99%

“…Of these, the Laves phases RT 2 represent the most important class of compounds, and, due to the simplicity of their crystal and magnetic structure, the best studied one. The data on their properties are summarized in several comprehensive reviews [1,2]. One of the crucial problems concerning their electronic structure is the influence of the well localized 4f rare earth moment on the conduction d-electron polarization.…”

Section: Introductionmentioning

confidence: 99%

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Hyperfine Interactions of111Cd in Some Rare Earth Laves Phases RT2 (T = Mn, Fe)

Komissarova

Ryasny

Сорокин

et al. 1999

phys. stat. sol. (b)

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Radioactive 111In was introduced into the Laves phases YMn2, GdFe2 and YbFe2 synthesized under pressure of 8 GPa, and the hyperfine interaction of the daughter 111Cd was measured by the perturbed angular correlation method. In the obtained hexagonal (C14) phase YMn2 111In is substituted for Mn, predominantly at h‐sites, experiencing there an electric quadrupole interaction with νQ = 32.0(5) MHz and η = 0.51(5) at 300 K. In GdFe2 and YbFe2 (cubic C15) most of the 111In–111Cd probes (≈︂80%) substituted mainly for the rare earth atoms and experienced a magnetic hyperfine field |Bhf| = 2.92(4) T and 3.32(7) T, respectively, at 300 K. The results are discussed together with the published data for the normal cubic YMn2, and for LuFe2 and ZrFe2.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hyperfine Interactions of111Cd in Some Rare Earth Laves Phases RT2 (T = Mn, Fe)

Komissarova

Ryasny

Сорокин

et al. 1999

phys. stat. sol. (b)

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“…For instance, the preferred moment direction in Gd Co is perpendicular to the c-axis [14], but results of X-ray diffraction made on magnetically aligned Gd Co \V Ga V samples with x*2 showed that the easy magnetisation direction at room temperature corresponds to the c-axis in these compounds, meaning that the Co sublattice anisotropy changes sign from negative to positive with increasing Ga concentration [3]. By contrast, similar studies made on magnetically aligned Y Co \V Ga V samples showed that no such sign reversal of the Co sublattice anisotropy occurs in this system [6].…”

Section: Discussionmentioning

confidence: 99%

Structure and magnetic properties of Nd2Co17−xGax compounds studied by magnetic measurements and neutron diffraction

Može

Giovanelli

Kockelmann

et al. 1998

Journal of Magnetism and Magnetic Materials

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The structural properties of Nd Co \V Ga V compounds (x"5, 6 and 7) were studied by means of neutron diffraction. The refinement results of the neutron powder diffraction patterns show that the Ga atoms completely avoid the 9d site in the rhombohedral Th Zn structure. Furthermore, the Ga atoms increasingly occupy the 6c and 18f sites at the cost of the 18h site that shows a decreasing Ga occupancy in this concentration range. At 4.2 K, the easy magnetisation direction is perpendicular to the c-axis for x"5 and 6, but parallel to the c-axis for x"7. From magnetic measurements and neutron diffraction it is derived that the Co and Nd moments at 4.2 K strongly decrease with increasing Ga concentration. There is also a strong decrease of the Curie temperature with Ga increasing concentration.1998 Elsevier Science B.V. All rights reserved.

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“…The rare earth R-Fe intermetallics-materials with hard magnetic and magnetostrictive properties [8,9]-are suitable objects for studying the 4d dilution on complex 3d-electron sublattice magnetism as the presence of R is driving the systems to the structures that are more closely packed, thus exhibiting features with similarities to fcc iron [10]. Strong magnetovolume effects in the most iron rich of all R-Fe binaries, R 2 Fe 17 , are reflected in (i) remarkably low ordering temperatures ranging from as little as 240 K in the compound with R = Ce to 480 K for that with Gd; (ii) thermal expansion anomalies in the vicinity of Curie point (T C ) [11,12]; and (iii) large pressure dependence of T C and noncollinear * Corresponding author: teresh@fzu.cz magnetic structures observed in some of the compounds under ambient [13,14] and hydrostatic [15,16] pressure.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of magnetic ordering and local atomic polarization in Ru-substitutedLu2Fe17

et al. 2014

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The distribution of magnetic moments in the iron-rich intermetallic compound Lu 2 Fe 17 with Fe partly substituted by Ru has been investigated on Lu 2 Fe 16.5 Ru 0.5 by using several techniques. The crystal structure and temperature evolution of the magnetic structure was studied using high resolution and high flux neutron powder diffractometers. In contrast to the parent Lu 2 Fe 17 , which transforms on cooling from an antiferromagnetic to a ferromagnetic state, Lu 2 Fe 16.5 Ru 0.5 is an antiferromagnet (Néel temperature T N = 208 K) down to the lowest temperatures. The magnetic polarization at the lutetium L 2,3 absorption edges, iron K and ruthenium L 2 edges was studied by x-ray magnetic circular dichroism (XMCD) on a single crystal of Lu 2 Fe 16.5 Ru 0.5 in a magnetic field of 3 T, i.e., above the field-induced metamagnetic transition. The Ru XMCD signal proves the existence of induced magnetic polarization parallel to the dominant Fe sublattice magnetization. A corresponding theoretical analysis in the framework of the local spin density formalism is provided in order to discern the structural disorder effects and magnetism in the system.

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Chapter 5 Magnetic properties of binary rare-earth 3d-transition-metal intermetallic compounds

Cited by 144 publications

References 514 publications

Hyperfine Interactions of111Cd in Some Rare Earth Laves Phases RT2 (T = Mn, Fe)

Hyperfine Interactions of111Cd in Some Rare Earth Laves Phases RT2 (T = Mn, Fe)

Structure and magnetic properties of Nd2Co17−xGax compounds studied by magnetic measurements and neutron diffraction

Experimental and theoretical study of magnetic ordering and local atomic polarization in Ru-substitutedLu2Fe17

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