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Giant coercivity and enhanced intrinsic anomalous Hall effect at vanishing magnetization in a compensated kagome ferrimagnet

Journal Article · · Science Advances
 [1];  [1];  [1];  [2];  [2];  [1];  [3];  [4];  [5];  [6];  [7];  [1]
  1. Univ. of Washington, Seattle, WA (United States)
  2. Ames Laboratory (AMES), Ames, IA (United States)
  3. Univ. of Washington, Seattle, WA (United States); Univ. of Central Florida, Orlando, FL (United States)
  4. Univ. of Central Florida, Orlando, FL (United States)
  5. Ames Laboratory (AMES), Ames, IA (United States); Univ. of Virginia, Charlottesville, VA (United States)
  6. George Mason Univ., Fairfax, VA (United States)
  7. Univ. of Washington, Seattle, WA (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
+ Show Author Affiliations
Ferrimagnets that can be driven to magnetic compensation show promise for use in spintronics as they exhibit a finite anomalous Hall effect at zero magnetic field without having a substantial magnetic moment. Compensated ferrimagnet spintronic devices with both a large anomalous Hall effect and a high coercivity would be simultaneously easy to read and difficult to erase. The kagome ferrimagnet TbMn6Sn6 has been reported to host a large intrinsic anomalous Hall effect. Here, we demonstrate that doping the Mn sites with Cr drives the system toward magnetic compensation. For nearly compensated compositions at low temperatures, giant coercive fields exceeding 14 T are observed. Additionally, Cr doping markedly enhances the intrinsic anomalous Hall effect, which can be attributed to a shift in the Fermi level. Our results extend the range of unique magnetic states observed in kagome materials, demonstrating that chemical doping is an effective strategy to tune and realize these states.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
Gordon and Betty Moore Foundation (GBMF); National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
3012371
Journal Information:
Science Advances, Journal Name: Science Advances Journal Issue: 35 Vol. 11; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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