Magnetic moment arrangement in amorphous Fe0.66Er0.19B0.15

Szymański, K.; Kalska, B.; Satuła, D.; Dobrzyński, L.; Broddefalk, A.; Wäppling, R.; Nordblad, Per

doi:10.1016/s0304-8853(02)00696-0

Cited by 9 publications

(32 citation statements)

References 26 publications

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“…The alternative suggestion, that the moments point randomly, at every angle to the applied field within a "filled cone" [9], is intuitively more consistent with the range of local environments that occurs in a glassy state.…”

Section: 0) Introductionmentioning

confidence: 95%

“…The (Fe,Er) -based glasses also exhibit ferrimagnetic compensation as a function of composition [5,6] and temperature [6,9]. We therefore made a preliminary study of a The magnetisation data and its analysis using a phenomenological model, will be presented in Figure 1 of [9], including the field dependence of the magnetisation.…”

Section: 0) Introductionmentioning

confidence: 99%

“…We therefore made a preliminary study of a The magnetisation data and its analysis using a phenomenological model, will be presented in Figure 1 of [9], including the field dependence of the magnetisation. The values of M(T) are low < 25Am 2 kg -1 with minimum values at T ≈ 114K, where the ferrimagnetic compensation occurs.…”

Section: 0) Introductionmentioning

confidence: 99%

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Sperimagnetism in Fe₇₈Er₅B₁₇and Fe₆₄Er₁₉B₁₇metallic glasses: I. Moment values and non-collinear components

Wildes

Cowlam

2011

J. Phys.: Condens. Matter

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Magnetization measurements have been made on a Fe64Er19B17 glass, which exhibits ferrimagnetic compensation at Tcomp = 112 K, and polarized beam neutron scattering measurements have been made on Fe78Er5B17 and Fe64Er19B17 glasses to supplement the measurements made earlier on Fe64Er19B17. The magnetization data were analysed with a phenomenological model, to find the magnetic moments and their components needed to interpret the neutron data. Four spin-dependent scattering cross-sections were obtained in absolute units from each neutron experiment, to determine the atomic-scale magnetic structures of the two glasses. The finite spin-flip cross-sections confirmed that these (Fe,Er)83B17 glasses are non-collinear ferrimagnets. The cross-sections were calculated using a model based on random cone arrangements of the magnetic moments. The moment values and the random cone angles were refined in the calculations, which produced good agreement between the calculated curves and the experimental data. The forward limit of the spin-flip cross-sections |∂σ±∓/∂Ω|Q=0 of the Fe64Er19B17 glass which peaked at Tcomp and the temperature variation of the total scattering amplitudes (b∓p∥(Q)) suggested that the random cone angles open fully so that the collinear components p∥(Q) tend to zero at Tcomp. The ferrimagnetic compensation is therefore characterized by an equality of the magnetic sublattices; the reversal of the magnetic structure and a compensated sperimagnetic phase which appears at Tcomp.

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Section: 0) Introductionmentioning

confidence: 95%

Section: 0) Introductionmentioning

confidence: 99%

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Sperimagnetism in Fe₇₈Er₅B₁₇and Fe₆₄Er₁₉B₁₇metallic glasses: I. Moment values and non-collinear components

Wildes

Cowlam

2011

J. Phys.: Condens. Matter

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“…The related (Fe,Er) 83 B 17 glass have been shown to be a non-collinear ferrimagnets by a variety of different measurements [4,5,6,7,8], but our preliminary neutron scattering measurements on a Fe 64 Er 19 B 17 glass at 1.5K, 60K and 180K proved to be difficult to interpret [9]. The finite spin-flip cross-sections confirmed the presence of a non-collinear state and could be analysed using a sperimagnetic structure in which the magnetic moments on the iron atoms point in a random cone that is ferrimagnetically coupled to a random cone of erbium moments.…”

Section: ) Introductionmentioning

confidence: 99%

“…It is difficult therefore, to find the unique choice of the components of the moments, even from a combination of different bulk measurements [4,5,6,7,8]. …”

Section: ) Introductionmentioning

confidence: 99%

Sperimagnetism in Fe₇₈Er₅B₁₇and Fe₆₄Er₁₉B₁₇metallic glasses: II. Collinear components and ferrimagnetic compensation

Cowlam

Wildes

2011

J. Phys.: Condens. Matter

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Structural and magnetic properties of nickel antimony ferrospinels

Иванов

Tellgren

Porcher

et al. 2015

Materials Chemistry and Physics

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Spinel-type compounds of Fe-Ni-Sb-O system were synthesized as polycrystalline powders.The crystal and magnetic properties were investigated using X-ray and neutron powder diffraction, Mössbauer and X-ray absorption spectroscopy and magnetization measurements.The samples crystallize in the cubic system, space group Fd -3m. The distribution of cations between octahedral and tetrahedral sites was refined from the diffraction data sets using constraints imposed by the magnetic, Mössbauer and EDS results and the ionic radii. The cation distribution and the temperature dependence of the lattice parameter (a) and the oxygen positional parameter (u) were obtained. A chemical formula close to Fe 0.8 Ni 1.8 Sb 0.4 O 4 was determined, with Sb 5+ cations occupying octahedral sites, and Fe 3+ and Ni 2+ occupying both tetrahedral and octahedral sites. Fe 3+ mainly (85/15 ratio) occupy tetrahedral sites, and conversely Ni 2+ mainly reside on octahedral ones.The magnetic unit cell is the same as the crystallographic one, having identical symmetry relations. The results indicate that the compounds have a collinear ferrimagnetic structure with antiferromagnetic coupling between the tetrahedral (A) and octahedral (B) sites.Uniquely, the temperature dependence of the net magnetization of this rare earth free ferrimagnet exhibits a compensation point.

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Magnetic moment arrangement in amorphous Fe0.66Er0.19B0.15

Cited by 9 publications

References 26 publications

Sperimagnetism in Fe₇₈Er₅B₁₇and Fe₆₄Er₁₉B₁₇metallic glasses: I. Moment values and non-collinear components

Sperimagnetism in Fe₇₈Er₅B₁₇and Fe₆₄Er₁₉B₁₇metallic glasses: I. Moment values and non-collinear components

Sperimagnetism in Fe₇₈Er₅B₁₇and Fe₆₄Er₁₉B₁₇metallic glasses: II. Collinear components and ferrimagnetic compensation

Structural and magnetic properties of nickel antimony ferrospinels

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Magnetic moment arrangement in amorphous Fe0.66Er0.19B0.15

Cited by 9 publications

References 26 publications

Sperimagnetism in Fe78Er5B17and Fe64Er19B17metallic glasses: I. Moment values and non-collinear components

Sperimagnetism in Fe78Er5B17and Fe64Er19B17metallic glasses: I. Moment values and non-collinear components

Sperimagnetism in Fe78Er5B17and Fe64Er19B17metallic glasses: II. Collinear components and ferrimagnetic compensation

Structural and magnetic properties of nickel antimony ferrospinels

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Sperimagnetism in Fe₇₈Er₅B₁₇and Fe₆₄Er₁₉B₁₇metallic glasses: I. Moment values and non-collinear components

Sperimagnetism in Fe₇₈Er₅B₁₇and Fe₆₄Er₁₉B₁₇metallic glasses: I. Moment values and non-collinear components

Sperimagnetism in Fe₇₈Er₅B₁₇and Fe₆₄Er₁₉B₁₇metallic glasses: II. Collinear components and ferrimagnetic compensation