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

doi:10.1088/0953-8984/28/16/166006

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 journal › Article › peer-review

Abstract

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 T_SC ≈ 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 language	English (US)
Article number	166006
Journal	Journal of Physics Condensed Matter
Volume	28
Issue number	16
DOIs	https://doi.org/10.1088/0953-8984/28/16/166006
State	Published - Mar 29 2016

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
General Materials Science

Keywords

itinerant ferromagnetism
superconductivity
tunnel diode resonator

Access to Document

10.1088/0953-8984/28/16/166006

Cite this

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title = "Superconductivity and itinerant ferromagnetism of Y9Co7 probed by ac susceptibility",

abstract = "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.",

keywords = "itinerant ferromagnetism, superconductivity, tunnel diode resonator",

author = "Gordon, {R. T.} and Vannette, {M. D.} and J. Strychalska and T. Klimczuk and Cava, {R. J.} and R. Prozorov",

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T1 - Superconductivity and itinerant ferromagnetism of Y9Co7 probed by ac susceptibility

AU - Gordon, R. T.

AU - Vannette, M. D.

AU - Strychalska, J.

AU - Klimczuk, T.

AU - Cava, R. J.

AU - Prozorov, R.

PY - 2016/3/29

Y1 - 2016/3/29

N2 - 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.

AB - 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.

KW - itinerant ferromagnetism

KW - superconductivity

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