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Title: 4 d element induced improvement of structural disorder and development of weakly reentrant spin-glass behavior in NiRuMnSn

Journal Article · · Physical Review. B
ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [2];  [4]; ORCiD logo [4]; ORCiD logo [2]; ORCiD logo [5];  [5];  [6];  [4];  [7]
  1. Saha Institute of Nuclear Physics, Kolkata (India); Homi Bhabha National Institute, Mumbai (India)
  2. Bhabha Atomic Research Centre (BARC), Mumbai (India); Homi Bhabha National Institute, Mumbai (India)
  3. Ames Lab., and Iowa State Univ., Ames, IA (United States)
  4. Univ. Paris-Est Creteil, Thiais (France); Centre National de la Recherche Scientifique-Mixed Organizations (CNRS-UMR), Paris (France)
  5. Bhabha Atomic Research Centre (BARC), Mumbai (India)
  6. Ames Laboratory (AMES), Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
  7. Saha Institute of Nuclear Physics, Kolkata (India)

The pursuit of efficient spin polarization in quaternary Heusler alloys with the general formula XX'YZ (where X, X', and Y are transition metals and Z is a p-block element) has been a subject of significant scientific interest. While previous studies showed that isoelectronic substitution of a 4d element in place of a 3d element in quaternary Heusler alloys improves the half-metallic ferromagnetic characteristics, our research here, on the quaternary Heusler alloy NiRuMnSn, reveals a strikingly different scenario. In this study, we present a detailed structural analysis of the material using x-ray absorption fine structure and neutron diffraction techniques which confirms the formation of a single-phase compound with 50:50 site disorder between Ni and Ru atoms at 4c and 4d sites. Contrary to expectations, our density functional theory calculations suggest a considerable decrease in spin polarization even in the ordered structure. Additionally, we report on the compound's exceptional behavior, displaying a rare reentrant spin-glass property below ~ 60 K, a unique and intriguing feature for quaternary Heusler-type compounds.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); GENCI-CINES
Grant/Contract Number:
AC02-07CH11358; 2021-A0100906175
OSTI ID:
1994520
Report Number(s):
IS-J-11,131; TRN: US2404972
Journal Information:
Physical Review. B, Vol. 108, Issue 5; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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