Critical phenomenon in the room-temperature ferromagnet Ce0.65Mg0.35Co3 prepared by high-pressure annealing

Zhang, Zhengming; Guan, Weizheng; Wang, Dunhui; Du, Youwei

doi:10.1039/d0cp03973j

Cited by 4 publications

(1 citation statement)

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“…Recently, Lamichhane, et al transformed this paramagnetic material into a permanent magnet by doping Mg element [9]. Thereafter, we analyzed the critical behavior of ferromagnetic-paramagnetic phase transition in Ce 1−x Mg x Co 3 magnets under different prepared conditions [10,11]. Regarding the permanent magnet, the coercivity H c is one of the important parameters to determine the magnetic energy product, which can be used to measure the amount of magnetostatic energy stored in free space [12].…”

Section: Introductionmentioning

confidence: 99%

Coercivity in the Mg-doped CeCo₃ permanent magnet: grain size and anisotropy variation effects

Guan¹,

Zhang²,

Wang³

et al. 2021

Phys. Scr.

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Understanding the microstructure–coercivity relationship is essential not only because of its theoretical significance, but also for the application value of designing high performance magnets. As one of the latest found permanent magnets, Mg-doped CeCo3 alloys have attracted wide attention due to their lots of advantages such as strong ferromagnetism, large magnetocrystalline anisotropy, low cost, and good hydrogenation property. However, the potential of coercivity in the Ce1−x Mg x Co3 magnet has not been fully excavated, which restricts the practical application to a certain extent. In this work, the effects of grain size and anisotropy variation on coercivity have been investigated systematically by using micromagnetic simulation. It has been shown that the coercivity exhibits nonlinear size-dependence and can reach ∼1.45 T in the sample with a grain size around 320 nm. In addition, the random variation of magnetocrystalline anisotropy caused by the precipitated Co phase in the small grain would lead to the fluctuation of coercivity. Our work can provide guidelines for the design and implementation of permanent magnets.

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Section: Introductionmentioning

confidence: 99%

Coercivity in the Mg-doped CeCo₃ permanent magnet: grain size and anisotropy variation effects

Guan¹,

Zhang²,

Wang³

et al. 2021

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

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Large magnetocaloric effect with a wide temperature range in Gd5Si4

Zhang

et al. 2022

Current Applied Physics

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Uncovering the universality of critical phenomenon in a ferromagnet Gd5Si4 prepared under high pressure

Hu,

Zhang,

Gong

et al. 2024

Journal of Alloys and Compounds

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Critical phenomenon in the room-temperature ferromagnet Ce_0.65Mg_0.35Co₃ prepared by high-pressure annealing

Abstract: Numerous studies have yielded evidence that high-pressure annealing (HPA) can modify the crystal and electronic structure significantly, which thus probably alter the magnetic ordering with a different universality class. In...

Cited by 4 publications

References 32 publications

Coercivity in the Mg-doped CeCo₃ permanent magnet: grain size and anisotropy variation effects

Coercivity in the Mg-doped CeCo₃ permanent magnet: grain size and anisotropy variation effects

Large magnetocaloric effect with a wide temperature range in Gd5Si4

Uncovering the universality of critical phenomenon in a ferromagnet Gd5Si4 prepared under high pressure

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Critical phenomenon in the room-temperature ferromagnet Ce0.65Mg0.35Co3 prepared by high-pressure annealing

Abstract: Numerous studies have yielded evidence that high-pressure annealing (HPA) can modify the crystal and electronic structure significantly, which thus probably alter the magnetic ordering with a different universality class. In...

Cited by 4 publications

References 32 publications

Coercivity in the Mg-doped CeCo3 permanent magnet: grain size and anisotropy variation effects

Coercivity in the Mg-doped CeCo3 permanent magnet: grain size and anisotropy variation effects

Large magnetocaloric effect with a wide temperature range in Gd5Si4

Uncovering the universality of critical phenomenon in a ferromagnet Gd5Si4 prepared under high pressure

Contact Info

Product

Resources

About

Critical phenomenon in the room-temperature ferromagnet Ce_0.65Mg_0.35Co₃ prepared by high-pressure annealing

Coercivity in the Mg-doped CeCo₃ permanent magnet: grain size and anisotropy variation effects

Coercivity in the Mg-doped CeCo₃ permanent magnet: grain size and anisotropy variation effects