Electrical and magnetic properties of R3Al11 (R = La, Ce, Pr, and Nd)

Chandrashekhar S. Garde, Tetsuya Takeuchi, Yasunori Nakano, Yuji Takeda, Yuki Ota, Yuichiro Miyauchi, Kiyohiro Sugiyama, Masayuki Hagiwara, Koichi Kindo, Fuminori Honda, Rikio Settai, Yoshichika Onuki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

High-quality single crystals of R3Al11 (R = La, Ce, Pr, and Nd) with the La3Al11-type orthorhombic crystal structure (space group Immm) have been grown by the Al-flux method. For Ce 3Al11, signatures for ferromagnetic and antiferromagnetic orderings at TC = 6.3 K and TN = 3.2 K, respectively, have been observed in the magnetic susceptibility, magnetization, specific heat, and electrical resistivity. An antiferromagnet Pr3Al11, on the other hand, exhibits two magnetic transitions at TN1 = 12.6 K and TN2 = 3.1 K. An antiferromagnet Nd3Al11 also exhibits multiple magnetic transitions at TN1 = 13.2 K, T N2 = 9.4 K, TN3 = 2.9 K, and TN4 = 1.77 K in zero magnetic field. The transition at TN4 has a first-order character. The crystalline electric field (CEF) analysis of magnetic susceptibility, magnetization and specific heat data shows that the CEF splitting is larger for Ce3Al11 than for Pr 3Al11 and Nd3Al11. The CEF ground state of Pr3Al11 is a singlet. Magnetic order occurs in this compound owing to the exchange mixing of the CEF ground state and low-lying excited states. The ferromagnetic like component of the magnetization for H ∥ [010] is characteristic of R3Al11 (R = Ce, Pr, and Nd), which is most likely due to the Dzialoshinsky-Moriya interaction for two nonequivalent R atoms.

Original languageEnglish
Article number124704
Journaljournal of the physical society of japan
Volume77
Issue number12
DOIs
Publication statusPublished - Dec 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Electrical and magnetic properties of R<sub>3</sub>Al<sub>11</sub> (R = La, Ce, Pr, and Nd)'. Together they form a unique fingerprint.

Cite this