Magnetic structures in the rich magnetic phase diagram of Ho${}_2$RhIn${}_8$

Abstract

The magnetic phase diagram of the tetragonal Ho${}_2$RhIn${}_8$ compound has similar features to many related systems, revealing a zero magnetic field AF1 and a field-induced AF2 phases. Details of the magnetic order in the AF2 phase were not reported yet for any of the related compounds. In addition, only the Ho${}_2$RhIn${}_8$ phase diagram contains a small region of the incommensurate zero-field AF3 phase. We have performed a number of neutron diffraction experiments on single crystals of Ho${}_2$RhIn${}_8$ using several diffractometers including experiments in both horizontal and vertical magnetic fields up to 4 T. We present details of the magnetic structures in all magnetic phases of the rich phase diagram of Ho${}_2$RhIn${}_8$. The Ho magnetic moments point along the tetragonal $c$ axis in every phase. The ground-state AF1 phase is characterized by propagation vector $\text{k}$ = (1/2, 0, 0). The more complex ferrimagnetic AF2 phase is described by four propagation vectors ${\text{k}}_0$ = (0, 0, 0), ${\text{k}}_1$ = (1/2, 0, 0), ${\text{k}}_2$ = (0, 1/2, 1/2), ${\text{k}}_3$ = (1/2, 1/2, 1/2). The magnetic structure in the AF3 phase is incommensurate with ${\text{k}}_{AF3}$ = (0.5, $\delta$, 0). Our results are consistent with theoretical calculations based on crystal field theory.

submitted to PRB

References in corpus (3)

• Destruction of Kondo effect in cubic heavy fermion compound Ce3Pd20Si6
• Single crystal study of the layered heavy fermion compounds Ce${}_2$PdIn${}_8$, Ce${}_3$PdIn${}_{11}$, Ce${}_2$PtIn${}_8$ and Ce${}_3$PtIn${}_{11}$
• Magnetic structures of non-cerium analogues of heavy-fermion Ce2RhIn8: case of Nd2RhIn8, Dy2RhIn8 and Er2RhIn8

Cited by in corpus (1)

• Prediction of Large Magnetic Moment Materials With Graph Neural Networks and Random Forests