Structural transitions and magnetocaloric properties of low-cost MnNiSi-based intermetallics

Ferromagnetic single crystalline MnNiSi samples were first fabricated through a Sn-flux growth technique, followed by measurements of their structural characteristics and intrinsic magnetic properties. Additionally, the critical behavior for second-order ferromagnetic to paramagnetic phase transition was investigated through utilization of techniques such as the modified Arrott plot, the Kouvel–Fisher method, and the magnetocaloric effect scaling law method. Through different methods of analysis, reliable critical exponents were obtained. Renormalization of interactions around the Curie temperature indicates the reliability of the obtained exponents. The obtained critical exponents are close to those theoretically predicted for a three-dimensional isotropic short-range Heisenberg ferromagnet but shift toward the long-range mean-field estimates. This may arise from the coupling of short- and long-range interactions as well as the competition between localized Mn–Mn magnetic interactions and the hybridization between p- and d-type orbitals.

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Structural transitions and magnetocaloric properties of low-cost MnNiSi-based intermetallics

Cited by 3 publications

References 41 publications

Magnetostructural transformation and magnetocaloric response in Mn(Fe)NiSi(Al) alloys

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Critical behavior at ferromagnetic to paramagnetic phase transition in single crystalline MnNiSi ferromagnet

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