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Title: Tricritical point of the f -electron antiferromagnet US b 2 driven by high magnetic fields

In pulsed magnetic fields up to 65 T and at temperatures below the Néel transition, our magnetization and magnetostriction measurements reveal a field-induced metamagneticlike transition that is suggestive of an antiferromagnetic to ferrimagnetic ordering. Our data also suggest a change in the nature of this metamagneticlike transition from second- to first-order-like near a tricritical point at T tc ~ 145K and H c ~ 52 T. At high fields for H > H c we found a decreased magnetic moment roughly half of the moment determined by neutron powder diffraction. Lastly, we propose that the decreased moment and lack of saturation at high fields indicate the presence of a field-induced ferrimagnetic state above the tricritical point of the H-T phase diagram for USb 2.
Authors:
 [1] ;  [2] ; ORCiD logo [3] ; ORCiD logo [3] ;  [1] ;  [4]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Maryland, College Park, MD (United States); National Institute of Science and Technology, Gaithersburg, MD (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. National Institute of Science and Technology, Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
Publication Date:
Report Number(s):
LA-UR-16-28417; LLNL-JRNL-702128
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1700992
Grant/Contract Number:
AC52-06NA25396; 14-ERD-041; AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 1; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; High Magnetic Field Science
OSTI Identifier:
1343719
Alternate Identifier(s):
OSTI ID: 1339182; OSTI ID: 1377774