Spontaneous vortex phase (SVP) of ruthenocuprate high T-c magneto-superconductors
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Spontaneous vortex phase (SVP) of ruthenocuprate high T-c magneto-superconductors
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| Creator |
Awana, V. P. S.
Kishan, H. |
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| Subject |
Physics
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| Description |
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.
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| Publisher |
Indian Academy of Sciences
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| Date |
2006-01
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2555/1/147.pdf
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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| Relation |
http://npl.csircentral.net/2555/
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