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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4837

Title: Strong rare-earth size dependence of T-c in RSr(2)Cu(2.85)Re(0.15)O(z)
Authors: MURUGESAN, M
RAO, MSR
GUPTA, LC
PINTO, R
SHARON, M
VIJAYARAGHAVAN, R
Keywords: mo
Issue Date: 1996
Publisher: AMERICAN PHYSICAL SOC
Citation: PHYSICAL REVIEW B, 53(13), 8604-8607
Abstract: We report a strong rare-earth size dependence of T-c in RSr(2)Cu(2.85)Re(0.15)O(z) (R=rare earth, z approximate to 7.2) compounds, unlike in RBa(2)Cu(3)O(y) compounds. A strong correlation is observed between the superconducting transition temperature and the orthorhombicity of the structure, which itself is R-size dependent. Orthorhombicity is highest for HoSr2Cu2.85Re0.15Oz and ErSr2Cu2.85Re0.15Oz compounds, which also have yielded the highest T-c(approximate to 7.2 K). Significantly, TbSr2CU2.85Re0.15Oz stabilizes in a 1-2-3 structure and also superconducts(T-c approximate to 22 K), whereas EuSr2Cu2.85Re0.15Oz does not superconduct, although it forms a single phase.
URI: http://dx.doi.org/10.1103/PhysRevB.53.8604
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4837
http://hdl.handle.net/10054/4837
ISSN: 0163-1829
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