Switching of magnetic ground states across the UIr1-xRhxGe alloy system

Abstract

We investigated the evolution of magnetism in the UIr1-xRhxGe system by the systematic study of high-quality single crystals. Lattice parameters of both parent compounds are very similar resulting in almost identical nearest interatomic uranium distance close to the Hill limit. We established the x-T phase diagram of the UIr1-xRhxGe system and found a discontinuous antiferromagnetic/ferromagnetic boundary at xcrit = 0.56 where a local minimum in ordering temperature and maximum of the Sommerfeld coefficient 175 mJ/mol K2 occurs in the UCoGe-URhGe-UIrGe system, signaling an increase in magnetic fluctuations. However, a quantum critical point is not realized because of the finite ordering temperature at xcrit. A magnon gap on the antiferromagnetic side abruptly suppresses magnetic fluctuations. We find a field-induced first order transition in the vicinity of the critical magnetic field along the b axis in the entire UIr1-xRhxGe system including the ferromagnetic region UCo0.6Rh0.4Ge - URhGe.

References in corpus (13)

• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Metallic Quantum Ferromagnets
• Field Re-entrant Superconductivity Induced by the Enhancement of Effective Mass in URhGe
• High-field moment polarization in the ferromagnetic superconductor UCoGe
• Properties of Ferromagnetic Superconductors
• Ferromagnetic quantum critical point in URhGe doped with Ru
• Collapse of ferromagnetism and Fermi surface instability near reentrant superconductivity of URhGe
• Disorder dependence of the ferromagnetic quantum phase transition
• Assessment of the U and Co magnetic moments in UCoGe by X-ray magnetic circular dichroism
• Ferromagnetic quantum critical point in UCo1-xFexGe
• Ferromagnetic order in U(Rh,Co)Ge
• Effect of Pressure on Magnetism of UIrGe
• Evidence for a ferromagnetic quantum critical point in URhGe doped with Ru

Cited by in corpus (10)

• Magnetic-Field-Induced Phenomena in the Paramagnetic Superconductor UTe${}_2$
• Itinerant ferromagnetism in actinide 5f electrons system: Phenomenological analysis with spin fluctuation theory
• Wing structure in the phase diagram of the Ising Ferromagnet URhGe close to its tricritical point investigated by angle-resolved magnetization measurements
• Mechanism for transitions between ferromagnetic and antiferromagnetic orders in $d$-electron metallic magnets
• Magnetic field induced phenomena in UIrGe in fields applied along b axis
• Microscopic mechanism for the unusual antiferromagnetic order and the pressure-induced transition to ferromagnetism in USb${}_2$
• Consecutive magnetic phase diagram of UCoGe-URhGe-UIrGe system
• High-field moment polarization in the itinerant ferromagnet URhSi
• Magnetic phase diagram of the antiferromagnet U2Rh2Pb
• UI${}_3$ -- 5f-electron magnetic van der Waals material