Exceedingly small moment itinerant ferromagnetism of single crystalline La&lt;sub&gt;5&lt;/sub&gt;Co&lt;sub&gt;2&lt;/sub&gt;Ge&lt;sub&gt;3&lt;/sub&gt;

Saunders, S.M.; Xiang, L.; Khasanov, R.; Kong, T.; Lin, Q.; Bud'ko, S.L.; Canfield, P.C.

doi:10.1103/PhysRevB.101.214405

Exceedingly small moment itinerant ferromagnetism of single crystalline La₅Co₂Ge₃

Saunders SM, Xiang L, Khasanov R, Kong T, Lin Q, Bud'ko SL & Canfield PC

Citation

Saunders, S. M., Xiang, L., Khasanov, R., Kong, T., Lin, Q., Bud'ko, S. L., & Canfield, P. C. (2020). Exceedingly small moment itinerant ferromagnetism of single crystalline La₅Co₂Ge₃. Physical Review B, 101(21), 214405 (8 pp.). https://doi.org/10.1103/PhysRevB.101.214405

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:33448

Single crystals of monoclinic La₅Co₂Ge₃ were grown using a self-flux method and were characterized by room-temperature powder x-ray diffraction, anisotropic temperature- and field-dependent magnetization, temperature-dependent resistivity, specific heat, and muon spin rotation. La₅Co₂Ge₃ has a Curie temperature (T_C) of 3.8 K and clear signatures of ferromagnetism in magnetization and μSR data, as well as a clear loss of spin disorder scattering in resistivity data and a sharp specific heat anomaly. The magnetism associated with La₅Co₂Ge₃ is itinerant has a change in the entropy at T_C of ≃0.05R ln 2 per mol Co and has a low-field saturated moment of ∼0.1 μ_B/Co, making it a rare, itinerant, small moment, low-T_C compound.