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Title: Structural and magnetic properties of the 5d2 double perovskites Sr2BReO6 (B = Y, In)

Journal Article · · Physical Review B
 [1];  [2];  [1];  [3];  [4];  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  3. STFC Rutherford Appleton Lab., Oxfordshire (United Kingdom); Univ. of Johannesburg, Auckland Park (South Africa)
  4. STFC Rutherford Appleton Lab., Oxfordshire (United Kingdom)

With this study, we have performed magnetic susceptibility, heat capacity, neutron powder diffraction, and muon spin relaxation experiments to investigate the magnetic ground states of the 5$d^2$ double perovskites Sr$$_2$$YReO$$_6$$ and Sr$$_2$$InReO$$_6$$. We find that Sr$$_2$$YReO$$_6$$ is a spin glass, while Sr$$_2$$InReO$$_6$$ hosts a non-magnetic singlet state. By making detailed comparisons with other 5$d^2$ double perovskites, we argue that a delicate interplay between spin-orbit coupling, non-cubic crystal fields, and exchange interactions plays a key role in the great variation of magnetic ground states observed for this family of materials.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1256821
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 21 Vol. 93; ISSN 2469-9950; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Spin-orbit coupling control of anisotropy, ground state and frustration in 5d2 Sr2MgOsO6 journal August 2016
Unconventional magnetism in the 4 d 4 -based S = 1 honeycomb system Ag 3 LiRu 2 O 6 journal February 2019
Magnetic ground state of KCr 3 As 3 journal May 2019

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