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Updated: Jun 24, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Gd substitution induced incommensurate antiferromagnetism in B20 noncentrosymmetric CoSi
Ravi Kumar Kalabarigi1,2, S Shanmukharao Samatham3,4, S Shravan Kumar Reddy3
1AU Trans-Disciplinary Research Hub, Andhra University, Visakhapatnam 530 003, Andhra Pradesh, India.
Abstract:
Rare-earth element Gd doped CoSi, Co1-xGdxSi (x= 0.01), is investigated using x-ray diffraction and magnetization. It crystallizes in B20 cubic structure with lattice parameter ofa= 4.4429 Å. The alloy exhibits two antiferromagnetic transitions AFM-I at 38.44 K and AFM-II at 21.87 K followed by an upturn of magnetization belowTut= 9.79 K as illustrated through the temperature-magnetic fieldT-Hphase diagram. AFM-I state is incommensurate. AFM-II state is weakly correlated as inferred from field-induced transition to AFM-I state. Further, AFM-I state is reported to transform to ferromagnetic state in high magnetic fields. The present study stimulates an approach to derive novel and exotic magnetic materials by substituting rare-earth in transition metal monosilicides.
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