Abstract
In this study, magnetization and neutron diffraction of anti-ThCr2Si2-type Tb2O2Bi polycrystals were measured at various temperatures. The magnetization cusp at 11.1 K was confirmed to correspond to antiferromagnetic ordering with a propagation vector of [0.5 0.5 0]. In addition, a metamagnetic behavior was observed below 5.0 K. The metamagnetic behavior could be attributed to the incommensurate magnetic structure with an anomaly at 5.0 K.
Highlights
RE2O2Bi has attracted attention because of its electrical properties such as metal-insulator transition and superconductivity.10–15 the magnetic properties of RE2O2Bi were investigated by only magnetic susceptibility measurements, suggesting antiferromagnetic transition in RE2O2Bi (RE = Pr, Gd, Er)
Metamagnetic behavior was observed below 5.0 K, probably associated with anomalies at 5.0 K of the magnetic susceptibility and the incommensurate peak of neutron diffraction
Tb (99.9%), Tb4O7 (99.9%), and Bi (99.9%) powders were pelletized under 20 MPa in a nitrogen-filled glove box after mixing, where the nominal compositions were Tb2O1.6Bi1.4 and Tb2O1.5Bi1.5 for magnetization measurement and powder neutron diffraction, respectively
Summary
Magnetization and neutron diffraction of anti-ThCr2Si2-type Tb2O2Bi polycrystals were measured at various temperatures. The metamagnetic behavior could be attributed to the incommensurate magnetic structure with an anomaly at 5.0 K.
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