Law of approach to saturation in highly anisotropic ferromagnets Application to NdFeB melt-spun ribbons

Андреев, С. В.; Bartashevich, M.I.; Pushkarsky, V.I.; Mal'tsev, V. N.; Pamyatnykh, L. A.; Tarasov, E. N.; Kudrevatykh, N. V.; Goto, T.

doi:10.1016/s0925-8388(97)00127-8

Cited by 96 publications

(38 citation statements)

References 4 publications

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“…Fig. 3 depicts the variation of K 1 and the inset shows the experimental and calculated lines of sample 3 as a representative where the law of approach to saturation [10] was applied. It is observed that variation of K 1 versus CuO contents presents a continuous decline with increasing CuO contents.…”

Section: Table I Herementioning

confidence: 99%

Study on the Contribution of Magnetization Mechanisms in NiZn Ferrites

et al. 2015

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NiZn ferrites with different amounts of CuO have been synthesized by the conventional ceramic method and their spectra of complex permeability were investigated. The CuO contents affect the grain size and microstructure of NiZn ferrite obviously, which also result in the variation of saturation magnetization, magnetocrystalline anisotropy and porosity. Along with these relevant magnetic properties, the superposition of magnetizing mechanisms was testified to be predominant in determining the value of permeability. To manifest the increase of initial permeability, the permeability spectra of NiZn ferrite were resolved into two components including domain wall movement and spin rotation magnetization. The fitting results show that, with CuO contents increasing, the dominant contribution to dynamic magnetization changes from spin rotation magnetization mechanism to domain wall movement.Index Terms-NiZn ferrites, complex permeability, domain wall motion, spin rotation. 0018-9464 (c)

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Section: Table I Herementioning

confidence: 99%

Study on the Contribution of Magnetization Mechanisms in NiZn Ferrites

et al. 2015

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“…For the polycrystalline sample with tetragonal structure, b is related to the effective anisotropy constant, K eff by the relation [15,16] b = 4 15…”

Section: Magnetizationmentioning

confidence: 99%

“…The term K eff is related to the anisotropy coefficients (K 1 , K 2 , K 3 ) for the tetragonal system as, K 2 eff = K 2 1 + (16/7)(K 1 + (2/3)K 2 ) + (160/21)K 2 3 [16]. The experimental M vs. H data were fitted with Eq.…”

Section: Magnetizationmentioning

confidence: 99%

Compositional variation of magnetic properties in Ni71−xCoxAl29 alloys

Chatterjee

Giri

2009

Journal of Alloys and Compounds

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“…where the α/H term arises because of nonmagnetic inclusions and structural defects and the β/H 2 term is attributed to the effective magnetocrystalline anisotropy [23]. The effective magnetocrystalline anisotropy (K eff ) is the sum of the different kinds of magnetic anisotropy, including magnetocrystalline anisotropy, shape anisotropy, strain anisotropy, and surface anisotropy.…”

Section: Introductionmentioning

confidence: 99%

Influence of Surfactant Variation on Effective Anisotropy and Magnetic Properties of Mechanically Milled Magnetite Nanoparticles and Their Biocompatibility

et al. 2014

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Magnetite nanoparticles were prepared with starch as surfactant by ball milling for 30 h a toluene medium. The nanoparticles were synthesized with different amounts of surfactant addition (8-12 wt%) and the variation in their effective anisotropy and magnetic properties with surfactant content is investigated. The samples were characterized by X-ray diffraction, FT-IR, and scanning electron microscopy. Magnetic measurements were carried out using a vibrating sample magnetometer. The cytotoxicity of the magnetite nanoparticles coated with 12% starch was evaluated on L929 cell lines using MTT assay. The analysis of FT-IR spectrum reveals a new bond at 810 cm −1 in the sample coated with 9 wt% starch, but this is not observed in other samples. The particle size of this sample is higher, whereas the lattice strain, coercivity (H c ) and saturation magnetization (M s ) are less compared with other samples. As the size decreases, the M s , H c and magnetic effective anisotropy K eff of these samples increase. The increase in M s with particle size reduction may be attributed to magnetic anisotropy, grain boundary effects, and changes in surface anisotropy caused by surfactant variation.

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Law of approach to saturation in highly anisotropic ferromagnets Application to NdFeB melt-spun ribbons

Cited by 96 publications

References 4 publications

Study on the Contribution of Magnetization Mechanisms in NiZn Ferrites

Study on the Contribution of Magnetization Mechanisms in NiZn Ferrites

Compositional variation of magnetic properties in Ni71−xCoxAl29 alloys

Influence of Surfactant Variation on Effective Anisotropy and Magnetic Properties of Mechanically Milled Magnetite Nanoparticles and Their Biocompatibility

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