Magnetic field angle dependence of the magnetic phase diagram in UNi4B
Rattachement africain : jp. Niveau de preuve : code pays fourni par la source.
Le rรฉsumรฉ fourni par la source
A uranium-based metallic compound UNi4โขB with an orthorhombic structure exhibits antiferromagnetic (AFM) ordering at ๐N=20.4 K. Although an electric current-induced magnetization below ๐N has been observed in this compound [H. Saito et al., J. Phys. Soc. Jpn. 87, 033702 (2018)], its underlying mechanism remains controversial. In this study, we measured thermal expansion and magnetostriction along the ๐ axis under a magnetic field ๐ป up to 14 T applied within the ๐๐โข plane to investigate the rotational symmetry of a magnetic fieldโtemperature (๐ปโ๐) phase diagram in UNi4โขB. From the phase diagrams constructed under various ๐ป angles between ๐ and ๐, it is suggested that the ๐ปโ๐ phase diagram practically exhibits sixfold rotational symmetry within the ๐โข๐ plane despite an orthorhombic crystal structure, which would be attributed to a quasihexagonal structure formed by U ions with small orthorhombic distortion.
Ce rรฉsumรฉ expose les affirmations des auteurs. BNTIC ne lโinterprรจte pas comme une validation indรฉpendante des rรฉsultats.
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Hokkaido University of Science, Hokkaido University et Japan Atomic Energy Agency, avec 5 autres affiliations.
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