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|Title:||A correlation between the spin wave stiffness constant and the cation size disorder in the perovskite manganites|
|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. (. .|
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