New synthetic pathway to robust ferromagnets

Crystal structure and temperature dependent graphScientific Achievement

Discovered a new ferromagnetic metal, Cr1+xPt5-xP, with a high Curie temperature of 465 K and exceptionally strong magnetic anisotropy.

Significance and Impact

This work demonstrates a relatively unexplored strategy for materials discovery that combines high melting and low boiling elements. The approach provides a promising new route to new magnetic topological materials. 

Research Details

  • Cr1+xPt5-xP crystals were grown by the flux method, leveraging low-melting Pt-P eutectic based compositions.
  • Transport and magnetization measurements indicate Cr1+xPt5-xP (x = 0.5) is a metallic ferromagnet with high Curie temperature of 465 K.
  • M(H) isotherms show Cr1+xPt5-xP (x = 0.5) is exceptionally anisotropic with anisotropy fields of 345 kOe and 220 kOe at 1.8 K and 300 K respectively.

T. J. Slade , N. Furukawa, T. R. Smith, J. Schmidt, R. S. Dissanayaka Mudiyanselage, L. L. Wang, W. Xie, S. L. Bud’ko, P. C. Canfield. Phys. Rev. Mater. 7, 024410 (2023).
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