Strong magnetic anisotropy in PrRu2Ga8and PrCo2Al8single crystals

Jing-Jing Xiao 肖静静; Cui-Xiang Wang 王翠香; Da-Yu Yan 闫大禹; Yong Li 李勇; Hai L Feng 冯海; Lai-Jun Liu 刘来君; You-Guo Shi 石友国

doi:10.1088/1361-648X/accc67

Strong magnetic anisotropy in PrRu₂Ga₈and PrCo₂Al₈single crystals

J Phys Condens Matter. 2023 Apr 26;35(29). doi: 10.1088/1361-648X/accc67.

Authors

Jing-Jing Xiao 肖静静^{1

2}, Cui-Xiang Wang 王翠香², Da-Yu Yan 闫大禹², Yong Li 李勇², Hai L Feng 冯海^{2

3}, Lai-Jun Liu 刘来君¹, You-Guo Shi 石友国^{2

4

3}

Affiliations

¹ Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guangxi Key Lab of Optical and Electronic Functional Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China.
² Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
³ Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, People's Republic of China.
⁴ Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100190, People's Republic of China.

PMID: 37044099
DOI: 10.1088/1361-648X/accc67

Abstract

Single crystals ofLnRu₂Ga₈andLnCo₂Al₈(Ln= La and Pr) were grown using a Ga/Al self-flux method. An orthorhombic CaCo₂Al₈-type structure with space groupPbam(No.55) of them was identified by x-ray diffraction. LaRu₂Ga₈and LaCo₂Al₈are Pauli paramagnetic down to 2 K, while PrRu₂Ga₈and PrCo₂Al₈show antiferromagnetic (AFM) order at 2.5 and 5 K, respectively. Strong magnetic anisotropy in PrRu₂Ga₈and PrCo₂Al₈single crystals was found by an anisotropic magnetic measurement. The field-induced FM state was observed in both PrRu₂Ga₈and PrCo₂Al₈forH||c. However, in the case of H⊥c, the AFM state is robust. The strong magnetic anisotropy in PrRu₂Ga₈FM and PrCo₂Al₈is due to their anisotropic magnetic interactions that FM interactions are dominant in the case ofH||cwhile AFM interactions forH⊥c.

Keywords: PrCo2Al8; PrRu2Ga8; magnetic anisotropy; single-crystal growth.