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Evolution of Structural Order and Magnetic Anisotropy in Yb0.5(Co1–xFex)3Ge3 through Doping of a Kagome Lattice

Journal Article · · Chemistry of Materials
Kagome materials provide fruitful grounds for exploring the intersection of topology and magnetism. In this article, the single crystal growth of Yb0.5(Co1–xFex)3Ge3 (x = 0.00, 0.25, 0.50, 0.75, and 1.00) is reported. As Fe is substituted into the Co-containing kagome net, the structure transforms from the disordered Y0.5Co3Ge3/CoSn-type hybrid structure to the ordered HfFe6Ge6-type structure. Diffusive scattering is observed in all doped concentrations that eventually converge to a single reflection in the Fe end member, ultimately doubling the unit cell along the c-axis. Anisotropic magnetic measurements were performed to evaluate how the magnetism of the kagome lattice is influenced by Fe substitution. Magnetic interactions are primarily observed along the c-axis. Additionally, a reorientation of the magnetic easy axis is observed with increasing Fe incorporation, highlighting how the magnetism of this material can be chemically tuned. Resistivity with unusual behavior observed in the doped compositions is also reported. Furthermore, the rationale behind the structural evolution from disordered to ordered is discussed.
Research Organization:
Baylor University, Waco, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0022854
OSTI ID:
2540543
Journal Information:
Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 6 Vol. 37; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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