The electromagnetic response of a superconducting ferromagnets

Grigory I. Leviev*, Menachem I. Tsindlekht, Edouard B. Sonin, Israel Felner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The electromagnetic response of the superconducting ferromagnets RuS 2Gd1.5Ce0.5Cu2O10(Ru- 1222 Gd) in an ac magnetic field of finite amplitude is investigated. Taking into account weak links between granules and magnetization of the magnetic sublattice, it is shown that the response of a sample in a superconducting state with the fundamental frequency and frequency of the 3rd harmonic can be described by the nonlinear equation for the macroscopic field. Generation of the harmonic at temperatures above superconducting transition corresponds to Rayleigh's mechanism. Using various regimes of a sample cooling, the internal magnetic field determined by the magnetic sublattice was measured. This is direct evidence of the coexistence of ferromagnetic and superconductive order parameters in high-,Tc ruthenocuprates.

Original languageEnglish
Pages (from-to)844-848
Number of pages5
JournalFizika Nizkikh Temperatur
Volume33
Issue number8
StatePublished - Aug 2007

Keywords

  • Electromagnetic response
  • High-T ruthenocuprates
  • Superconducting ferromagnets

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