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Structural, transport and magnetic properties of Sr(2)RuTiO(6)

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Title Structural, transport and magnetic properties of Sr(2)RuTiO(6)
 
Creator PILLAI, SS
SANTHOSH, PN
THOMAS, PJ
TUNA, F
SURESH, KG
 
Subject double perovskites
crystal-structure
magnetoresistance
resistivity
ca
double perovskite materials
magnetoresistance
transport properties
structural properties
 
Description The double perovskite. Sr(2)RuTiO(6) has been studied by X-ray powder diffraction, magnetizations and magnetoresistance techniques. Rietveld analysis of the X-ray diffraction shows that the sample crystallizes in tetragonal structure with space group 14/mcm and there is no indication of long range Ru/Ti cation ordering. The magnetic studies point towards the existence of magnetic polarons in the paramagnetic state with a weak ferromagnetic transition at 145 K The temperature dependent magnetoresistance studies reveal an unusual cross over from positive to negative magnetoresistance at low temperature (similar to 15 K). The complex magnetotransport properties of Sr(2)RuTiO(6) arise from the competing ferromagnetic and antiferromagnetic superexchange interactions between Ru ions via Ti/O ions, initiated by the B-site cation disorder.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-26T16:41:20Z
2011-12-26T12:57:32Z
2011-12-27T05:42:51Z
2011-08-26T16:41:20Z
2011-12-26T12:57:32Z
2011-12-27T05:42:51Z
2010
 
Type Article
 
Identifier SOLID STATE COMMUNICATIONS, 150(31-32), 1450-1452
0038-1098
http://dx.doi.org/10.1016/j.ssc.2010.05.026
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11377
http://hdl.handle.net/10054/11377
 
Language en