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Magnetic ground state of the Ising-like antiferromagnet DyScO3

Journal Article · · Physical Review B
 [1];  [2];  [1];  [1];  [1];  [1];  [3];  [1];  [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Max Planck Institute for Chemical Physics of Solids, Dresden (Germany); Technische Univ. Dresden, Dresden (Germany)
  3. Kirensky Institute of Physics, Krasnoyarsk (Russia)
Here, we report on the low-temperature magnetic properties of the DyScO3 perovskite, which were characterized by means of single crystal and powder neutron scattering, and by magnetization measurements. Below TN = 3.15 K, Dy3+ moments form an antiferromagnetic structure with an easy axis of magnetization lying in the ab plane. The magnetic moments are inclined at an angle of ~ ±28° to the b axis. We show that the ground-state Kramers doublet of Dy3+ is made up of primarily |±15/2> eigenvectors and well separated by a crystal field from the first excited state at E1 = 24.9 meV. This leads to an extreme Ising single-ion anisotropy, M/M~0.05. The transverse magnetic fluctuations, which are proportional to M2/M2, are suppressed, and only moment fluctuations along the local Ising direction are allowed. We also found that the Dy-Dy dipolar interactions along the crystallographic c axis are two to four times larger than in-plane interactions.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1399967
Alternate ID(s):
OSTI ID: 1398156
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 14 Vol. 96; ISSN 2469-9950; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Anisotropic anomalous Hall effect in triangular itinerant ferromagnet Fe 3 GeTe 2 journal October 2017
Antiferromagnetic ordering and dipolar interactions of YbAlO 3 journal May 2019

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