paper

Magnetic properties of $R$ Rh $_{6}$ Ge $_{4}$ ( $R$ = Pr, Nd, Sm, Gd-Er) single crystals

arXiv:2510.27585 · doi:10.1103/x8nk-gq44

Abstract

Single crystals of $R$ Rh $_{6}$ Ge $_{4}$ ( $R$ = Pr, Nd, Sm, Gd - Er) were synthesized using a Bi flux and their physical properties were characterized by magnetization, resistivity, and specific heat measurements. These compounds crystallize in the noncentrosymmetric LiCo $_{6}$ P $_{4}$ -type structure (space group $P 6 ˉ m 2$ ), where rare-earth atoms form a triangular lattice in the $ab$ -plane and chains along the $c$ -axis. PrRh $_{6}$ Ge $_{4}$ and ErRh $_{6}$ Ge $_{4}$ do not exhibit magnetic transitions above 0.4 K. NdRh $_{6}$ Ge $_{4}$ and SmRh $_{6}$ Ge $_{4}$ are ferromagnets, while GdRh $_{6}$ Ge $_{4}$ and DyRh $_{6}$ Ge $_{4}$ show antiferromagnetic transitions, \red{whereas HoRh $_{6}$ Ge $_{4}$ is a ferrimagnet}. In addition, DyRh $_{6}$ Ge $_{4}$ shows multiple transitions and magnetization plateaus when a magnetic field is applied along the $c$ -axis. In SmRh $_{6}$ Ge $_{4}$ , like the Ce counterpart, the crystalline-electric field (CEF) effect leads to an easy plane anisotropy, while in other compounds it gives rise to a pronounced uniaxial anisotropy.

12 pages, 13 figures

Magnetic properties of RRh6​Ge4​ (R = Pr, Nd, Sm, Gd-Er) single crystals

Abstract

Magnetic properties of $R$ Rh $_{6}$ Ge $_{4}$ ( $R$ = Pr, Nd, Sm, Gd-Er) single crystals