Law and Disorder: Special Stacking Units -- Building the Intergrowth Ce₆Co₅Ge₁₆

Abstract

A new structure type of composition Ce6Co5G16 was grown out of a molten Sn flux. Ce6Co5G16 crystallizes in the orthorhombic space group Cmcm, with highly anisotropic lattice parameters of a = 4.3293(5) Å, b = 55.438(8) Å, and c = 4.3104(4) Å. The resulting single crystals were characterized by X-ray diffraction, and the magnetic and transport properties are presented. The Sn-stabilized structure of Ce6Co5G16 is based on the stacking of disordered Ce cuboctahedra and is an intergrowth of existing structure types including AlB2 , BaNiSn3, and AuCu3 . The stacking of structural subunits has previously been shown to be significant in the fields of superconductivity, quantum materials, and optical materials. Herein, we present the synthesis, characterization, and complex magnetic behavior of Ce6Co5G16 at low temperature, including three distinct magnetic transitions.

Department(s)

Physics

Comments

National Science Foundation, Grant 1700030

International Standard Serial Number (ISSN)

1520-510X; 0020-1669

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 American Chemical Society (ACS), All rights reserved.

Publication Date

06 May 2019

PubMed ID

31009213

Link to Full Text

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