SIUC Physics Seminar
School of Physics and Applied Physics, Southern Illinois University--Carbondale


2025 February 21 Friday 4:00 PM:
Physics Seminar in Neckers 440

Title: Phase Transitions, Magnetocaloric Effects, and Magneto Transport Properties of the Heusler Alloy Ni47Bi3Mn35In15
Speaker: Abhiyan Oli
Affiliation: Southern Illinois University--Carbondale



Abstract: In this work we investigate the magnetocaloric properties of a Heusler alloy Ni47Bi3Mn35In15 with a focus on their structural, magnetic, and transport properties by substituting 3% Bi in Ni site. By using the X-ray diffractometer, we observe the alloy crystallized in a primitive cubic-like structure described as L21 space group with a lattice constant a=5.946 Å. Magnetization measurements reveal that the alloy exhibits a first order transition from antiferromagnetic (AFM) to a ferromagnetic (FM) state at TM ≈ 200 K and a second-order phase transition (SOPT) from (FM) to a paramagnetic (PM) at the Curie temperature TC = 313 K in an applied magnetic field of H = 100 Oe. In addition, this alloy exhibits maximum magnetic entropy change of |Δ SM|=6.0 Jkg-1K-1 and a significant relative cooling power (RCP) of 336 J/kg in the vicinity of the Curie temperature with H=50 kOe. The resistivity was found to exhibit a typical behavior for the Heusler alloys measured at zero field.



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