Enhancement of large magnetoresistances in ruthenocuprates by Ta substitution

An unexpected enhancement of the large negative magnetoresistance (MR) observed in RuSr(2)Nd(0.95)Y(0.15)Ce(0.9)Cu(2)O(10-delta) up to -47% at 4 K and 9 T is evidenced upon dilution of the Ru magnetic order by substitution of Ta for Ru; this enhancement of -MR scales with the cell volume.

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2007-06 (22), p.2273-2274
Main Authors: McLaughlin, A C, Begg, L, McCue, A J, Attfield, J P
Format: Article
Language:English
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Summary:An unexpected enhancement of the large negative magnetoresistance (MR) observed in RuSr(2)Nd(0.95)Y(0.15)Ce(0.9)Cu(2)O(10-delta) up to -47% at 4 K and 9 T is evidenced upon dilution of the Ru magnetic order by substitution of Ta for Ru; this enhancement of -MR scales with the cell volume.
ISSN:1359-7345
1364-548X
DOI:10.1039/b617872c