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Updated: May 21, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Chemical Disorder-Driven Cluster Spin Glass in Pseudobinary Co2Zn10.2Mn0.8: An Experimental and Theoretical Study
Amit Mondal1, Shubham Patel2, Rahul Pan1
1Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
Abstract:
The investigation focuses on Mn substitution in Co2Zn11, prepared by pursuing a solid-state sealed tube method under high vacuum. We report the crystal structure and magnetic properties of Co2Zn10.2Mn0.8 in detail. Co2Zn10.2Mn0.8 adopts the noncentrosymmetric space group I4̅3m (No. 217), and the distribution of Co, Mn, and Zn atoms is confirmed using X-ray and neutron powder diffraction (NPD) techniques. The magnetic studies reveal cluster glass (CG) formation below the spin-freezing temperature of 23.1 K in Co2Zn10.2Mn0.8, also indicated by the large value of the characteristic relaxation time (τ0) of ∼10-8 s. This large value of τ0 supports the formation of magnetic clusters. The magnetic moment primarily originates due to the spins of Mn atoms, which is realized from significant differences between majority- and minority-spin channels of Mn 3d states in the projected density of states curves.
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