Issue 18, 2021

Critical behavior in hexagonal Y2Fe17: magnetic interaction crossover from 3D to 2D Ising model

Abstract

The critical behavior of single phase Y2Fe17 melt-spun ribbons with the Th2Fe17-type crystal structure has been studied around the transition temperature (TC). This alloy undergoes a second-order ferromagnetic (FM)–paramagnetic (PM) phase transition at TC = 301 K. Various techniques, such as the modified Arrott plot, Kouvel–Fisher method, and critical isotherm analysis, were used to determine the critical exponents that were found to be β = 0.226(3), γ = 1.296(2), and δ = 6.804(5). The universality class of the critical phenomenon in the Y2Fe17 ribbons can be explained with the help of the renormalization group theory approach, in which the magnetic properties show a feature changing from three (3D)- to two-dimensional (2D) Ising model. The first-principles calculations based on density functional theory qualitatively explain the experimental results, confirming the strong correlation between lattice atoms and critical behavior in magnetic intermetallic Y2Fe17.

Graphical abstract: Critical behavior in hexagonal Y2Fe17: magnetic interaction crossover from 3D to 2D Ising model

Article information

Article type
Paper
Submitted
01 Feb 2021
Accepted
15 Mar 2021
First published
13 Apr 2021

CrystEngComm, 2021,23, 3411-3418

Critical behavior in hexagonal Y2Fe17: magnetic interaction crossover from 3D to 2D Ising model

J. Fan, C. Huang, H. Liu, Y. Yang, J. L. Sánchez Llamazares, C. F. Sánchez Valdés, P. Gorria, C. Ma, Y. Zhu and H. Yang, CrystEngComm, 2021, 23, 3411 DOI: 10.1039/D1CE00156F

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