Measuring magnetic anisotropy with a rotatable ac electromagnet

Wang, Ran; Nie, Shuaihua; Zhao, Jianlong; Ji, Yang

doi:10.1016/j.measurement.2015.10.032

Cited by 5 publications

(1 citation statement)

References 20 publications

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“…Extensive studies on magnetic properties of diverse advanced materials have been performed to analyse physical phenomena and evaluate their potentials for engineering applications [1][2][3][4][5]. The Curie temperature, saturation magnetization, remanent magnetization, coercive field, and magnetic anisotropy are among the most important parameters of magnetic materials, determining their applicability.…”

Section: Introductionmentioning

confidence: 99%

Versatile Hall magnetometer with variable sensitivity assembly for characterization of the magnetic properties of nanoparticles

Araújo

Vieira

Osorio

et al. 2019

Journal of Magnetism and Magnetic Materials

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 A Hall magnetometer with variable sensitivity is constructed to measure the magnetic properties of magnetic nanoparticles manufactured by different methods. This novel magnetometer can also be used to measure bulk materials and samples in liquids. The magnetometer is constructed with two commercial Hall-effect sensors in an acrylic structure, which serves as the support for a micrometer and the circuit board with the sensors. For operation, the magnetometer it acquires a complete magnetization curve in a few minutes. If has a magnetic moment sensitivity of 1.3 × 10 -9 Am 2 to sensitivity of 493 mV/mT, the sensitivity can be adjustable in the range of 10 to 493 mV/mT. Its performance is tested with magnetic nanoparticles. As an application example, we estimate the mean diameter of the nanoparticles using the magnetic curves. The results are compared with those obtained by other techniques, such as transmission electron microscopy (TEM), X-ray diffraction (XRD) and dynamic light scattering (DLS). The magnetization results are also compared with those obtained by independent commercial magnetometers, which reveals errors of approximately ±0.31 Am 2 /kg (i.e., 0.6%) in the saturation region.

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Section: Introductionmentioning

confidence: 99%

Versatile Hall magnetometer with variable sensitivity assembly for characterization of the magnetic properties of nanoparticles

Araújo

Vieira

Osorio

et al. 2019

Journal of Magnetism and Magnetic Materials

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show abstract

Size dependent structural and magnetic properties of Co(1−) Ni Cr2O4 nanoparticles (x = 0.15, 0.20)

Jacob,

Prinsloo,

Mohanty

et al. 2023

Materials Today Communications

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A new way to determine the magneto-crystalline anisotropy of Li-Ti-Mn-Zn ferrites

Saied

Lebourgeois²,

Laur

2021

AIP Advances

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The knowledge of the magnetocrystalline anisotropy is often essential and its determination remains an ambitious challenge. In this article, we propose a new way to measure the anisotropy magnetic field of some substituted lithium ferrites. To achieve that, we have measured the complex permeability versus frequency of several substituted lithium-based ferrites, in which, the anisotropy field is related to the gyromagnetic resonance frequency. However, the gyromagnetic resonance frequency is hidden by the domain wall motion resonance. To solve the problem, we have sintered the ferrite at different temperatures to control the microstructure of the ferrite, thus separating the magnetization mechanisms. We have obtained results of anisotropy fields comparable to those of the literature between 270 and 460 Oe.

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Measuring magnetic anisotropy with a rotatable ac electromagnet

Cited by 5 publications

References 20 publications

Versatile Hall magnetometer with variable sensitivity assembly for characterization of the magnetic properties of nanoparticles

Versatile Hall magnetometer with variable sensitivity assembly for characterization of the magnetic properties of nanoparticles

Size dependent structural and magnetic properties of Co(1−) Ni Cr2O4 nanoparticles (x = 0.15, 0.20)

A new way to determine the magneto-crystalline anisotropy of Li-Ti-Mn-Zn ferrites

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