Critical field analysis of modified arrott plots (MAP) in MnCoGe0.97Al0.03 alloy

MnCoGe system has attracted extensive attention since the find of the field-induced martensitic transition. To better understand the intrinsic nature of the interactions and magnetism in this material, it is essential to study further the order and nature of the FM-PM magnetic transition. This paper...

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Bibliographic Details
Published in:AIP conference proceedings 2024-01, Vol.2925 (1)
Main Authors: Rahman, Abdul Rashid Abdul, Din, Muhamad Faiz Md, Suhaimi, Nur Sabrina, Ahmeed, Mahmoud Mohmmed I., Wang, Jian Li, Idris, Nurul Hayati, Ismail, Mohamad
Format: Article
Language:English
Subjects:
Critical field (superconductivity)
Ferromagnetism
Heisenberg theory
Ising model
Magnetic properties
Magnetic transitions
Mean field theory
Statistical models
Three dimensional models
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Summary:MnCoGe system has attracted extensive attention since the find of the field-induced martensitic transition. To better understand the intrinsic nature of the interactions and magnetism in this material, it is essential to study further the order and nature of the FM-PM magnetic transition. This paper discussed the critical properties of MnCoGe0.97Al0.03 alloy around the FM-PM magnetic transition investigated through modified Arrott plots (MAP) analysis. Data obtained near TC were examined in the framework of the mean-field theory, the 3D-Heisenberg model, the 3D-Ising model, and the tricritical mean-field. The deduced critical exponents values obtained using the MAP method were β = 0.429 and γ = 0.80 with TC = 348 K. The obtained critical parameters show a tendency towards the mean-field behavior, suggesting the existence of long-range ferromagnetic order in the compound studied.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0183378