Linear and nonlinear susceptibilities and scaling far from Tc in nickel

Carré, Emmanuel; Souletie, J.

doi:10.1016/0304-8853(88)90266-1

Cited by 37 publications

(12 citation statements)

References 17 publications

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“…A raw estimative of Curie temperature can be made using Heisenberg-Ising critical exponent model for real ferromagnets [12]. Then, we assume that the saturation magnetization M s can be written as a function of temperature as [13] nor nickel, 0.42 [14]. Therefore, the fitting using critical exponents between 0.33 and 0.37 shows that the Curie temperature is in the range of 470-490 K. Only measurements of magnetization, susceptibility or specific heat at higher temperatures would give a more accurate determination of T C .…”

Section: Article In Pressmentioning

confidence: 99%

Magnetic characterization of Mn5SiB2 and Mn5Si3 phases

Almeida

Bormio-Nunes

Nunes

et al. 2009

Journal of Magnetism and Magnetic Materials

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a b s t r a c tIn this work the Mn 5 Si 3 and Mn 5 SiB 2 phases were produced via arc melting and heat treatment at 1000 1C for 50 h under argon. A detailed microstructure characterization indicated the formation of single-phase Mn 5 Si 3 and near single-phase Mn 5 SiB 2 microstructures. The magnetic behavior of the Mn 5 Si 3 phase was investigated and the results are in agreement with previous data from the literature, which indicates the existence of two anti-ferromagnetic structures for temperatures below 98 K. The Mn 5 SiB 2 phase shows a ferromagnetic behavior presenting a saturation magnetization M s of about 5.35 Â 10 5 A/m (0.67 T) at room temperature and an estimated Curie temperature between 470 and 490 K. In addition, AC susceptibility data indicates no evidence of any other magnetic ordering in 4-300 K temperature range. The magnetization values are smaller than that calculated using the magnetic moment from previous literature NMR results. This result suggests a probable ferrimagnetic arrangement of the Mn moments.

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Section: Article In Pressmentioning

confidence: 99%

Magnetic characterization of Mn5SiB2 and Mn5Si3 phases

Almeida

Bormio-Nunes

Nunes

et al. 2009

Journal of Magnetism and Magnetic Materials

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“…(1) the magnetic ordering temperature, T C , (2) the irreversibility temperature, T irr , and (3) the crossover temperature, T cross . The modified Kouvel-Fisher approach [24] applied to the susceptibility in the paramagnetic range yielded values of T C viz. 316 K for x=33.5, and 314 K for x=34.1.…”

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confidence: 99%

Magnetic phase diagrams in the H-T plane of the magnetically strongest sigma-phase Fe-V compounds

Sikora

Dubiel

2017

Journal of Magnetism and Magnetic Materials

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Magnetization measurements were performed on two sigma-phase samples of Fe 100-x V x (x=35.5, 34.1) vs. temperature, T, and in DC magnetic field, of various amplitudes. Using three characteristic temperatures, magnetic phase diagrams in the H-T plane have been designed testifying to a re-entrant character of magnetism. The ground magnetic state, a spin glass (SG), was evidenced to be composed of two sub phases: one with a weak irreversibility and the other with a strong irreversibility. Two critical lines were reconstructed within the SG state. Both of them show a crossover from the Gabay-Toulouse behavior (low field) to a linear and/or quasi-Almeida-Touless behavior. A strong difference in the effect of the applied magnetic field on the SG phase in the two samples was revealed.

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“…Whereas most of the work on magnetic systems has focused on the study of the phase transition in ferromagnets [31,32,34,36] and spin glasses [24,25,33,35] as well as on the blocking of superparamagnetic particles [33,35], in the work of Rüdt et al [36] a model based on the Heisenberg Hamiltonian was developed for the analysis of the ferromagnetic hysteresis loop of Fe/V-multilayers using higher harmonic susceptibilities. In the present work a similar approach is followed using the Preisach model.…”

Section: Introductionmentioning

confidence: 99%

“…Measurements of higher harmonic susceptibilities have been used to characterize the magnetic response of superconductors [28][29][30] and magnetic systems [24,25,[31][32][33][34][35][36]. Whereas most of the work on magnetic systems has focused on the study of the phase transition in ferromagnets [31,32,34,36] and spin glasses [24,25,33,35] as well as on the blocking of superparamagnetic particles [33,35], in the work of Rüdt et al [36] a model based on the Heisenberg Hamiltonian was developed for the analysis of the ferromagnetic hysteresis loop of Fe/V-multilayers using higher harmonic susceptibilities.…”

Section: Introductionmentioning

confidence: 99%

Study of magnetization processes using higher harmonic ac‐susceptibility

Prüfer

Ziese

2008

Physica Status Solidi (b)

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The ac‐susceptibility of a La0.7Sr0.3MnO3 epitaxial film was measured up to the 11th harmonic as a function of ac‐field amplitude, superimposed dc‐field and temperature. The experimental data reflect the magnetization hysteresis‐loop shape in a very precise and detailed way. This is further elucidated by numerical simulations of the ac‐susceptibility within a Preisach model with Gaussian distribution function. Using parameters from magnetization measurements the simulated ac‐susceptibility curves were found to be in good agreement with the experimental results. This shows that measurements of higher harmonic susceptibilities are a powerful tool for the precise study of magnetization processes. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Linear and nonlinear susceptibilities and scaling far from Tc in nickel

Cited by 37 publications

References 17 publications

Magnetic characterization of Mn5SiB2 and Mn5Si3 phases

Magnetic characterization of Mn5SiB2 and Mn5Si3 phases

Magnetic phase diagrams in the H-T plane of the magnetically strongest sigma-phase Fe-V compounds

Study of magnetization processes using higher harmonic ac‐susceptibility

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