The law of approach to saturation in ferromagnets originating from the magnetocrystalline anisotropy

Zhang, Hui; Zeng, Dechang; Liu, Zhongwu

doi:10.1016/j.jmmm.2010.02.040

Cited by 168 publications

(64 citation statements)

References 15 publications

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“…However, so far there is no clear explanation about this term. 39 The lack of saturation in M-H data for both the samples upto 40 kOe clearly indicates the existence of magnetic inhomogeneity or short-range FM order. In order to study the critical behavior near the T C , where a magnetic system undergo a second-order phase transition from PM (above T C ) to FM (below T C ) state is characterized by a set of critical exponents and amplitudes; we have used various techniques such as modified Arrott plots, Kouvel-Fisher method and 087105-7 R. Ade and R. Singh AIP Advances 5, 087105 (2015) critical isotherm analysis.…”

Section: +mentioning

confidence: 90%

Disorder-driven phase transition in La0.37D0.30Ca0.33MnO3 (D = Bi, Sm) manganites

Ade

Singh

2015

AIP Advances

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In the present work we report the structural, electron spin resonance (ESR) and magnetic properties of La0.37D0.30Ca0.33MnO3 (D = Bi, Sm) manganites synthesized by sol-gel method. The critical behavior at the critical point, where the system undergoes phase transition from paramagnetic (PM) to ferromagnetic (FM) state, is investigated by using modified-Arrott plots, Kouvel-Fisher method and critical isotherm analysis. Both the samples show second-order phase transition near the critical point. The decrease in magnetization (M), Curie temperature (TC), evolution of spin or cluster glass behavior and the nature of second-order phase transition compared to the first-order transition reported in the literature for La0.67Ca0.33MnO3 are ascribed to disorder caused by the size mismatch of the A-site cations with Bi and Sm doping at La-site.

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Section: +mentioning

confidence: 90%

Disorder-driven phase transition in La0.37D0.30Ca0.33MnO3 (D = Bi, Sm) manganites

Ade

Singh

2015

AIP Advances

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“…At first, the initial magnetic polarization displays a moderately rising trend, and then rises quickly as the field becomes comparable to its intrinsic coercivity, which means that magnetization reversal is governed mainly by a coercive mechanism involving magnetic domain-wall pinning [21,22], with grain boundaries likely to act as domain-wall-pinning centers. In addition, the effective anisotropy constant, K , eff and the saturation magnetization, Ms, of a nanocomposite can be determined by the LATS (law of approach to saturation) method [23,24], as described by the following formula:…”

Section: Methodsmentioning

confidence: 99%

The effect of Tb doping on the magnetic properties and microstructure of a TbNdFeCoB/Fe₇Co₃ nanocomposite permanent magnet

Ding

Cui

Yang

et al. 2020

Mater. Res. Express

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Melt-spun NdFeB-type nanocomposite magnetic materials are important in a number of applications, including electromagnetic sensors, magnetic resonance imaging, and voice coil motors. Herein we investigated the magnetic properties and microstructures of melt-spun Tb x Nd 10−x Fe 80 Co 4 B 6 /Fe 7 Co 3 (x=0.1, 0.2, and 0.3) ribbons by means of x-ray diffractometry, scanning electron microscopy, and magnetization experiments. Tb doping resulted in the formation of a 2:14:1 phase with a higher anisotropy field, which suppressed the separation of Fe 7 Co 3 branch crystals and improved the magnetic properties of the material. Optimum magnetic properties that include a remanence (J r ) of 0.62 T, a coercivity (H ci ) of 612.0 kA m −1 , and a maximum magnetic energy product ((BH) max ) of 94.9 kJ m −3 were obtained for the annealed Tb 0.3 Nd 9.7 Fe 80 Co 4 B 6 /Fe 7 Co 3 ribbon. Furthermore, the effective anisotropy constant, K , eff and the saturation magnetization, Ms, in the nanocomposite were determined by the LATS (law of approach to saturation) method. In this study, the values of K eff and Ms were found to lie between those of hard and soft magnetic phases, consistent with the exchangecoupling concept.

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“…The saturation magnetization M S was deduced using 85 the saturation approach law M H = M S + a/H 2[19].…”

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confidence: 99%

Structural and magnetic properties of PrCo3−xFex by neutron powder diffraction and electronic structure investigations

Younsi

Crivello

Paul‐Boncour

et al. 2015

Journal of Solid State Chemistry

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The law of approach to saturation in ferromagnets originating from the magnetocrystalline anisotropy

Cited by 168 publications

References 15 publications

Disorder-driven phase transition in La0.37D0.30Ca0.33MnO3 (D = Bi, Sm) manganites

Disorder-driven phase transition in La0.37D0.30Ca0.33MnO3 (D = Bi, Sm) manganites

The effect of Tb doping on the magnetic properties and microstructure of a TbNdFeCoB/Fe₇Co₃ nanocomposite permanent magnet

Structural and magnetic properties of PrCo3−xFex by neutron powder diffraction and electronic structure investigations

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The law of approach to saturation in ferromagnets originating from the magnetocrystalline anisotropy

Cited by 168 publications

References 15 publications

Disorder-driven phase transition in La0.37D0.30Ca0.33MnO3 (D = Bi, Sm) manganites

Disorder-driven phase transition in La0.37D0.30Ca0.33MnO3 (D = Bi, Sm) manganites

The effect of Tb doping on the magnetic properties and microstructure of a TbNdFeCoB/Fe7Co3 nanocomposite permanent magnet

Structural and magnetic properties of PrCo3−xFex by neutron powder diffraction and electronic structure investigations

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The effect of Tb doping on the magnetic properties and microstructure of a TbNdFeCoB/Fe₇Co₃ nanocomposite permanent magnet