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A correlation between the spin wave stiffness constant and the cation size disorder in the perovskite manganites

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Title A correlation between the spin wave stiffness constant and the cation size disorder in the perovskite manganites
 
Creator YASSIN, OA
BHATIA, SN
HAGMUSA, IH
 
Subject electric conductivity
manganese compounds
positive ions
thermal effects
 
Description We investigated the temperature dependence of magnetization in the ferromagnetic phase of La0.67−2xNd2xCa0.33−xSrxMnO3 (x=0, 0.1, 0.02 and 0.33) manganites in terms of the spin wave theory. A relation between the spin wave stiffness constant (D) and the cation size mismatch was obtained. By means of this relation we could reproduce the values of D determined by different techniques reported in the literature for some samples. These findings may have important implications on the spin dynamics and the metallic electrical resistivity at low temperatures.
 
Publisher Elsevier
 
Date 2009-03-16T06:35:36Z
2011-11-25T19:04:44Z
2011-12-26T13:08:45Z
2011-12-27T05:34:05Z
2009-03-16T06:35:36Z
2011-11-25T19:04:44Z
2011-12-26T13:08:45Z
2011-12-27T05:34:05Z
2000
 
Type Article
 
Identifier Solid State Communications 116(4), 207-211
0038-1098
http://dx.doi.org/10.1016/S0038-1098(00)00294-5
http://hdl.handle.net/10054/932
http://dspace.library.iitb.ac.in/xmlui/handle/10054/932
 
Language en