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
Authors:	YASSIN, OA BHATIA, SN HAGMUSA, IH
Keywords:	orientation dynamics
Issue Date:	2000
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Citation:	SOLID STATE COMMUNICATIONS, 116(4), 207-211
Abstract:	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. (. .
URI:	http://dx.doi.org/10.1016/S0038-1098(00)00294-5 http://dspace.library.iitb.ac.in/xmlui/handle/10054/10403 http://hdl.handle.net/10054/10403
ISSN:	0038-1098
Appears in Collections:	Article

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