Determination of Néel Temperatures in fcc Iron

Gonser, U.; Meechan, C. J.; Muir, A. H.; Wiedersich, H.

doi:10.1063/1.1702749

Cited by 287 publications

(57 citation statements)

References 6 publications

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“…Figure 1(a) shows -T curves of the SUS304 in the solution-treated and sensitized states. The -T curve of the solution-treated SUS304 shows a sharp peak at about 40 K due to a paramagnetic to antiferromagnetic transition of the -phase, being in agreement with a report by U. Gonser et al 13) There is no hysteresis between heating and cooling processes. On the other hand, the -T curve of the SUS304 sensitized for 10 h starts to increase in the cooling process near 250 K due to the formation of ferromagnetic 0 -phase.…”

Section: Effect Of Temperature On Transformation Behaviorsupporting

confidence: 80%

Effects of Magnetic Field and Deformation on Isothermal Martensitic Transformation in SUS304 and SUS304L Steels

et al. 2007

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Section: Effect Of Temperature On Transformation Behaviorsupporting

confidence: 80%

Effects of Magnetic Field and Deformation on Isothermal Martensitic Transformation in SUS304 and SUS304L Steels

et al. 2007

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“…This transition occurs around a volume compression of V /V 0 = 0.94 [120][121][122] , which corresponds to the calculated compression ratio in Fe + 13 [74][75][76]90,116,117,119 , even though the modeled T h symmetry of Fe + 13 [74][75][76]90 can be interpreted as a distorted fcc 74 rather than hcp structure. The face-centered cubic (fcc) γ phase of bulk iron is stable only above the Curie temperature of α iron and is paramagnetic, but an antiferromagnetic fcc phase 123 of iron with a Néel temperature of 67 K can be stabilized in iron precipitates [124][125][126] . Complex antiferromagnetic order in thin films of fcc iron grown on copper (001) has also been observed experimentally [127][128][129][130] .…”

Section: B Magnetic Anisotropy Energy Of Transition Metal Clustersmentioning

confidence: 99%

Spin and orbital magnetic moments of size-selected iron, cobalt, and nickel clusters

et al. 2014

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Spin and orbital magnetic moments of cationic iron, cobalt, and nickel clusters have been determined from x-ray magnetic circular dichroism spectroscopy. In the size regime of n = 10 − 15 atoms, these clusters show strong ferromagnetism with maximized spin magnetic moments of 1 µB per empty 3d state because of completely filled 3d majority spin bands. The only exception is Fewhere an unusually low average spin magnetic moment of 0.73 ± 0.12 µB per unoccupied 3d state is detected; an effect, which is neither observed for Co + 13 nor Ni + 13 . This distinct behavior can be linked to the existence and accessibility of antiferromagnetic, paramagnetic, or nonmagnetic phases in the respective bulk phase diagrams of iron, cobalt, and nickel. Compared to the experimental data, available density functional theory calculations generally seem to underestimate the spin magnetic moments significantly. In all clusters investigated, the orbital magnetic moment is quenched to 5 − 25 % of the atomic value by the reduced symmetry of the crystal field. The magnetic anisotropy energy is well below 65 µeV per atom.

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“…It has been experimentally established that small iron particles precipitating from a oversaturated solution in copper [121][122][123] or fcc Fe thin films epitaxially grown-up on a surface of Cu single crystal [124][125][126][127] were paramagnetic (PM) at room temperature and the transition to an AF state occurred below the Neel' point, that is, about 65-67 K. The AF fcc Fe possessed a hyperfine field of ≈2.0 T and the magnetic moment per atom of ≈0.7 μ B .…”

Section: 47mentioning

confidence: 99%

Structure and Magnetic Properties of Aerosol Nanoparticles of Fe and Its Alloys

Petrov

Shafranovsky

2012

International Journal of Inorganic Chemistry

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Structure and magnetic properties of aerosol nanoparticles of Fe and its alloys (FeMn, FeNi, FeNiMn, FePt, FeCr, FeCo, and FeCu) have been reviewed. It has been shown that, compared to a bulk material, the particles have a number of specific features being of much fundamental and applied interest. The effect of both a quenched high-temperature Fe modification and its oxides on the structure and magnetism of nanoparticles has been considered in detail. Particular attention has been paid to the recently observed fine structure in the hyperfine field distribution at iron nuclei in Mössbauer spectra for pure iron and its alloys both as a bulk and aerosol nanoparticles. This phenomenon makes it possible to reveal very weak magnetic interactions in the system under study. The plausible origin of these magnetic interactions has been also discussed.

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Determination of Néel Temperatures in fcc Iron

Abstract: Ferromagnetism and crystal lattice stability of bcc and fcc iron

Cited by 287 publications

References 6 publications

Effects of Magnetic Field and Deformation on Isothermal Martensitic Transformation in SUS304 and SUS304L Steels

Effects of Magnetic Field and Deformation on Isothermal Martensitic Transformation in SUS304 and SUS304L Steels

Spin and orbital magnetic moments of size-selected iron, cobalt, and nickel clusters

Structure and Magnetic Properties of Aerosol Nanoparticles of Fe and Its Alloys

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