Possible phase separated bulk superconductivity in Ru0.9Sr2YCu2.1O7.9

V. P. S. Awana; T. Kawashima; E. Takayama-Muromachi

Possible phase separated bulk superconductivity in Ru0.9Sr2YCu2.1O7.9

Superconductivity 2007-05-23 v1

Authors: V. P. S. Awana , T. Kawashima , E. Takayama-Muromachi

Abstract

The Ru0.9Sr2YCu2.1O7.9 sample being synthesized by high-pressure high-temperature solid-state reaction underwent (weak) ferromagnetic transition at 150 K followed by superconducting transition at 30 K. It showed clear Meissner signal in the field-cooled process up to external magnetic field of a few hundred Oe (~300 Oe). The magnetic susceptibility data and magnetic hysteresis data could be explained assuming that the sample was a macroscopic mixture of a superconductor and a (weak) ferromagnet. Any anomalous behaviour implying the coexistence of superconductivity and magnetism on a microscopic scale was not observed.

Keywords

high-temperature superconductivity superconductivity single crystal superconductivity

Cite

@article{arxiv.cond-mat/0209376,
  title  = {Possible phase separated bulk superconductivity in Ru0.9Sr2YCu2.1O7.9},
  author = {V. P. S. Awana and T. Kawashima and E. Takayama-Muromachi},
  journal= {arXiv preprint arXiv:cond-mat/0209376},
  year   = {2007}
}

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