Successive magnetic orderings in the Ising spin chain magnet ${\mathrm{DyNi}}_{5}{\mathrm{Ge}}_{3}$

Successive magnetic orderings in the Ising spin chain magnet ${DyNi}_{5} {Ge}_{3}$

H. Ge, L. Zhang, N. Zhao, J. Yang, L. Wang, L. Zhou, Y. Fu, T. T. Li, Z. M. Song, F. Ding, J. B. Xu, Y. F. Zhang, S. M. Wang, J. W. Mei, X. Tong, P. Miao, H. He, Q. Zhang, L. S. Wu, and J. M. Sheng

Phys. Rev. Materials 6, 085001 – Published 8 August 2022

Abstract

In this report, we investigated a new rare-earth-based one-dimensional Ising spin chain magnet $Dy {Ni}_{5} {Ge}_{3}$ by means of magnetization, specific heat, and powder neutron diffraction measurements. Due to the crystalline electrical field splitting, the magnetic Dy ions share an Ising-like ground doublet state. Owning to the local point symmetry, these Ising moments form into two canted magnetic sublattices, which were further confirmed by the angle-dependent magnetization measurement. In zero fields, two successive antiferromagnetic phase transitions were found at temperatures $T_{N 1} = 6 K$ and $T_{N 2} = 5 K$ , respectively. Only part of the moments are statically ordered in this intermediate state between $T_{N 1}$ and $T_{N 2}$ . Powder neutron diffraction experiments at different temperatures were performed as well. An incommensurate magnetic propagation vector of $k_{m} = (0.5, 0.4, 0.5)$ was identified. The refined spin configurations through the irreducible representation analysis confirmed that these Ising spins are canted in the crystal $a b$ plane.

Received 24 May 2022
Accepted 27 July 2022

DOI:https://doi.org/10.1103/PhysRevMaterials.6.085001

Physics Subject Headings (PhySH)

Magnetism Quantum phase transitions

1-dimensional spin chains

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

H. Ge^1,*, L. Zhang ^2,*, N. Zhao¹, J. Yang³, L. Wang^1,4, L. Zhou¹, Y. Fu¹, T. T. Li¹, Z. M. Song¹, F. Ding¹, J. B. Xu¹, Y. F. Zhang ¹, S. M. Wang¹, J. W. Mei^1,4,5, X. Tong ^6,7, P. Miao ^6,7, H. He⁸, Q. Zhang ^9,†, L. S. Wu^1,5,‡, and J. M. Sheng^10,1,§

¹Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
²Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
³Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
⁴Shenzhen Institute for Quantum Science and Engineering, Shenzhen 518055, China
⁵Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
⁶Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
⁷Spallation Neutron Source Science Center, Dongguan 523803, China
⁸School of Chemical Science, University of Chinese Academy of Sciences (UCAS), Beijing 100190, China
⁹Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
¹⁰Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China

^*These authors have contributed equally to this work.
^†zhangq6@ornl.gov
^‡wuls@sustech.edu.cn
^§shengjm@sustech.edu.cn

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Vol. 6, Iss. 8 — August 2022

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Physical Review Materials

Successive magnetic orderings in the Ising spin chain magnet DyNi5Ge3

H. Ge, L. Zhang, N. Zhao, J. Yang, L. Wang, L. Zhou, Y. Fu, T. T. Li, Z. M. Song, F. Ding, J. B. Xu, Y. F. Zhang, S. M. Wang, J. W. Mei, X. Tong, P. Miao, H. He, Q. Zhang, L. S. Wu, and J. M. Sheng

Phys. Rev. Materials 6, 085001 – Published 8 August 2022

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Successive magnetic orderings in the Ising spin chain magnet ${DyNi}_{5} {Ge}_{3}$