TEM Studies of a New Modulated Structure in Mn₂RuSn Alloy and Intermetallic Phases in Fe_3+xCo_3–xTi₂ (x = 0, 1, 2, 3) Alloys

Authors

Xing-Zhong Li, University of Nebraska-LincolnFollow
Shah R. Valloppilly, University of Nebraska - LincolnFollow

Date of this Version

2023

Citation

Published in Microscopy and Microanalysis, 29 (Suppl 1), 2023, pp. 1829–1830

doi:10.1093/micmic/ozad067.946

Abstract

Heusler compounds are a remarkable class of intermetallic materials with wide-ranging and tunable properties. The Mn₂RuSn Heusler compound was reported as an L2₁B-type cubic phase, a = 0.62195 nm, distinguishing from the original L2₁ structure (or L2₁A-type). The L2₁B-type structure is a disordered variant of the inverse Heusler structure, XA-type (Prototype-CuHg₂Ti, space group No. 216, F4–3m).

In our recent work [1], we observed a new modulated structure derived from the XA-type structure and its orthogonal domains in the Mn₂RuSn Heusler alloy. The structural characterization was carried out using selected-area electron diffraction (SAED), transmission electron microscopy (TEM), dark-field (DF) imaging, and high-resolution transmission electron microscopy (HRTEM) imaging techniques.