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Title: Successive magnetic orderings in the Ising spin chain magnet DyNi5Ge3

Journal Article · · Physical Review Materials
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  1. Southern University of Science and Technology (SUSTech), Shenzhen (China)
  2. Chinese Academy of Sciences (CAS), Ganzhou (China); Southern University of Science and Technology (SUSTech), Shenzhen (China)
  3. Southern University of Science and Technology (SUSTech), Shenzhen (China); Shenzhen Institute for Quantum Science and Engineering (China)
  4. Chinese Academy of Sciences (CAS), Beijing (China); Spallation Neutron Source Science Center, Dongguan (China)
  5. University of Chinese Academy of Sciences, Beijing (China)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

In this report, we investigated a new rare-earth-based one-dimensional Ising spin chain magnet DyNi5Ge3 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 TN1=6K and TN2=5K, respectively. Only part of the moments are statically ordered in this intermediate state between TN1 and TN2. Powder neutron diffraction experiments at different temperatures were performed as well. Further, an incommensurate magnetic propagation vector of km=(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 ab plane.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); Guangdong Basic and Applied Basic Research Foundation; Guangdong Introducing Innovative and Entrepreneurial Teams; Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices
Grant/Contract Number:
AC05-00OR22725; 12134020; 11974157; 11875265; 12104255; 2021B1515120015; 2017ZT07C062; ZDSYS20190902092905285
OSTI ID:
1883773
Journal Information:
Physical Review Materials, Vol. 6, Issue 8; ISSN 2475-9953
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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