Magnetic and transport properties of new ternary uranium-based germanide U2Rh3Ge5

D. X. Li, Y. Shimizu, A. Nakamura, A. Maurya, Y. J. Sato, Y. Homma, F. Honda, D. Aoki

研究成果: Contribution to journalArticle査読

抄録

A new ternary uranium germanide U2Rh3Ge5 has been successfully synthesized and investigated by means of magnetic susceptibility χ(T, H), isothermal magnetization M(T, H), electrical resistivity ρ(T), and specific heat C(T, H) measurements. This compound is found to crystallize in the U2Co3Si5-type orthorhombic structure. The low-field χ(T) shows a clear peak at T N = 41.5 K corresponding to an antiferromagnetic transition. The M(H) curve measured up to 71 kOe exhibits an H-linear behavior at 2 K with very small induced magnetic moments, while it shows upward curvature with increasing temperature, implying the possible presence of a metamagnetic transition in high-field region above 71 kOe. As the temperature decreases, ρ(T) increases slowly at T > T N and decreases rapidly at T < T N, which can be understood based on a semiconductor-like narrow band gap model (or the c-f hybridization effect) and an antiferromagnetic spin-wave model, respectively. No evidence of heavy-fermion behavior or superconductivity transition is observed at temperatures as low as 1.4 K. The obtained experimental results are discussed by comparing with those reported for the isomorphic compound U2Ir3Si5 and the quasi-isomorphic compound U2Rh3Si5.

本文言語英語
論文番号495814
ジャーナルJournal of Physics Condensed Matter
32
49
DOI
出版ステータス出版済み - 9 17 2020
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学

フィンガープリント

「Magnetic and transport properties of new ternary uranium-based germanide U<sub>2</sub>Rh<sub>3</sub>Ge<sub>5</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル