Awana, V. P. S. and Kishan, H. (2006) Spontaneous vortex phase (SVP) of ruthenocuprate high T-c magneto-superconductors. Pramana - Journal of Physics, 66. pp. 247-250. ISSN 0304-4289

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The Ru0.9Sr2YCu2.1O7.9 compound synthesized by HPHT (high pressure high temperature) solid-state reaction route exhibits bulk superconductivity below 30 K. Also the Ru-spins are ordered magnetically above 143 K, with a ferromagnetic component at 5 K. Low field (< 1000 Oe) M vs. H plots show that both the superconducting and ferromagnetic components are present in the compound at 5 K. At low temperatures, the compound though remains in spontaneous vortex phase, its M vs. H hysteresis loop is symmetric instead of the theoretically expected asymmetric one. Our results cast doubts on either theoretical model or the intrinsic nature of ferromagnetic superconductivity in studied ruthenate.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Indian Academy of Sciences.
Subjects: Physics
Depositing User: Users 27 not found.
Date Deposited: 07 Aug 2018 08:16
Last Modified: 07 Aug 2018 08:16

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