Structural Trends and Itinerant Magnetism of the New Cage-structured Compound HfMn${}_2$Zn${}_{20}$

Abstract

A new cage-structured compound - HfMn${}_2$Zn${}_{20}$ - belonging to the AB${}_2$C${}_{20}$ (A, B = transition or rare earth metals, and C = Al, Zn, or Cd) family of structures has been synthesized via the self-flux method. The new compound crystallizes in the space group Fd-3m with lattice parameter a = 14.0543(2) Å (Z = 8) and exhibits non-stoichiometry due to Mn/Zn mixing on the Mn-site and an underoccupied Hf-site. The structure refines to Hf${}_{0.93}$Mn${}_{1.63}$Zn${}_{20.37}$ and follows lattice size trends when compared to other HfM${}_2$Zn${}_{20}$ (M = Fe, Co, and Ni) structures. The magnetic measurements show that this compound displays a modified Curie-Weiss behavior with a transition temperature around 22 K. The magnetization shows no saturation, a small magnetic moment, and near negligible hysteresis, all signs of the itinerant magnetism. The Rhodes-Wohlfarth ratio and the spin fluctuation parameters ratio both confirm the itinerant nature of the magnetism in HfMn${}_2$Zn${}_{20}$.

arXiv commentAccepted for publication in Journal of Physics: Condensed Matter

References in corpus (19)

• Tutorial: A Beginner's Guide to Interpreting Magnetic Susceptibility Data with the Curie-Weiss Law
• Superconductivity in the Ferroquadrupolar State in the Quadrupolar Kondo Lattice PrTi${}_2$Al${}_{20}$
• Simultaneous Superconducting and Antiferroquadrupolar Transitions in PrRh${}_2$Zn${}_{20}$
• Magnetic properties of RFe${}_2$Zn${}_{20}$ and RCo${}_2$Zn${}_{20}$(R = Y, Nd, Sm, Gd - Lu)
• Strong Valence Fluctuation Effects in Sm$T{r}_2$Al${}_{20}$($Tr=$Ti, V, Cr)
• Variation of the magnetic ordering in GdT${}_2$Zn${}_{20}$ (T= Fe, Ru, Os, Co, Rh and Ir) and its correlation with the electronic structure of isostructural YT${}_2$Zn${}_{20}$
• Rattling enhanced superconductivity in MV${}_2$Al${}_{20}$ (M = Sc, Lu, Y) intermetallic cage compounds
• Itinerant ferromagnetism in actinide 5f electrons system: Phenomenological analysis with spin fluctuation theory
• Magnetic properties of Gd_xY_{1-x}Fe_2Zn_{20}: dilute, large, $\text{S}$ moments in a nearly ferromagnetic Fermi liquid
• Rattling and Superconducting Properties of the Cage Compound GaxV2Al20
• Crystal structure and low-energy Einstein mode in ErV${}_2$Al${}_{20}$ intermetallic cage compound
• Itinerant-Electron Magnet of the Pyrochlore Lattice: Indium-Doped YMn2Zn20
• Synthesis and properties of A${}_x$V${}_2$Al${}_{20}$ (A = Th, U, Np, Pu) ternary actinide aluminides
• Unusual signatures of the ferromagnetic transition in the heavy Fermion compound UMn${}_2$Al${}_{20}$
• Thermoelectric Power of the YbT${}_2$Zn${}_{20}$ (T = Fe, Ru, Os, Ir, Rh, and Co) Heavy Fermions
• Magnetic Order in TbCo2Zn20 and TbFe2Zn20
• Superconductivity in an Einstein Solid AxV2Al20 (A = Al and Ga)
• Crystal Chemistry and Magnetic Properties of Manganese Zinc Alloy "YMn2Zn20" Comprising a Mn Pyrochlore Lattice
• Neutron scattering and scaling behavior in URu2Zn20 and YbFe2Zn20