Magnetic Properties of YbBe13 Probed by Neutron Scattering and Thermodynamic Measurements

TL;DR

This study investigates the unique antiferromagnetic properties of YbBe13 using neutron scattering and thermodynamic measurements, revealing incommensurate magnetic order and complex anomalies that challenge simple models.

Contribution

It provides the first detailed magnetic phase diagram of YbBe13 and uncovers non-trivial magnetic anomalies, advancing understanding of magnetic correlations in MBe13 compounds.

Findings

Incommensurate magnetic propagation vector observed

Magnetic phase diagram constructed for YbBe13

Non-trivial magnetic anomalies identified

Abstract

We examined the magnetic properties of YbBe13, which exhibits an antiferromagnetic order below TN = 1.2 K. Unlike other MBe13 compounds (M = rare earth/actinide elements), based on elastic neutron scattering, we observed an incommensurate magnetic propagation vector {\tau} = (0,0,{\tau}z), where {\tau}z = 0.5385 is in the reciprocal lattice unit. Additionally, we constructed a precise magnetic phase diagram for YbBe13. We observed non-trivial magnetic anomalies in YbBe13, which cannot be understood based on a simple helical order. Our results for YbBe13 provide an opportunity to reconsider the electron state of UBe13 and present an important step toward a comprehensive understanding of magnetic correlations in MBe13 series.