Low energy magnetic excitation spectrum of the unconventional ferromagnet CeRh${}_3$B${}_2$

Abstract

The magnetic excitation spectrum of the unconventional ferromagnet CeRh${}_3$B${}_2$ was measured by inelastic neutron scattering on single crystal sample in the magnetically ordered and paramagnetic phases. The spin-wave excitation spectrum evidences high exchange interaction along the c-axis about two orders of magnitude higher than the ones in the basal plane of the hexagonal structure. Both strong out of plane and small in plane anisotropies are found. This latter point confirms that considering the $J$=5/2 multiplet alone is not adequate for describing the ground state of CeRh${}_3$B${}_2$. Quasielastic scattering measured above $T_{Curie}$ is also strongly anisotropic between the basal plane and the c-axis and suggests localized magnetism.

8 Figures

References in corpus (3)

• Extremely Large and Anisotropic Upper Critical Field and the Ferromagnetic Instability in UCoGe
• Variational Mote Carlo Study of Flat Band Ferromagnetism -- Application to CeRh_3 B_2
• Bandstructure and Fermi Surfaces of CeRh3B2

Cited by in corpus (5)

• muSR and inelastic neutron scattering investigations of the caged type Kondo semimetals: CeT2Al10 (T=Fe, Ru and Os)
• Another dimension: investigations of molecular magnetism using muon-spin relaxation
• Orbital selective coupling in CeRh${}_3$B${}_2$: co-existence of high Curie and high Kondo temperature
• Spontaneous magnon decays in planar ferromagnet
• Paramagnetic fluctuations of the magnetocaloric compound MnFe${}_4$Si${}_3$