Superconductivity and itinerant ferromagnetism of Y9Co7 probed by ac susceptibility

R. T. Gordon, M. D. Vannette, J. Strychalska, T. Klimczuk, R. J. Cava, R. Prozorov

Research output: Contribution to journalArticlepeer-review


The ac magnetic susceptibility of a single crystal sample of the compound Y9Co7 has been measured in applied dc fields ranging from 0-6.7 kOe by utilizing a tunnel diode resonator circuit. In agreement with previous measurements on this material, a superconducting transition has been observed to occur at TSC ≈ 2.5 K. A broad maximum has been observed in the zero field susceptibility measurements from 2.5 K < T < 8 K and its behavior with applied dc magnetic fields is consistent with that of the itinerant ferromagnet ZrZn2, which supports previous claims of itinerant ferromagnetism in this compound. The susceptibility has also been measured as a function of applied magnetic field and the results indicate that the actual Curie temperature for this system is higher than that suggested by previous reports based on Arrott plots constructed from dc magnetization.

Original languageEnglish (US)
Article number166006
JournalJournal of Physics Condensed Matter
Issue number16
StatePublished - Mar 29 2016

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • General Materials Science


  • itinerant ferromagnetism
  • superconductivity
  • tunnel diode resonator


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