Structural and magnetic study of self-doped La1-x-yCaxOyMnO3


A detailed study of the combined effect of divalent ion and A-site vacancy self-doping in ferromagnetic La(1-x-y)Ca(x)theta(y)MnO(3) manganite system is presented. It is found that the system can accommodate high vacancy content, with a strong lattice distortion for y > 0.12. Near the stoichiometric maximum T-c (x = 0.33, y = 0), vacancies do not degrade T-c and the magnetoresistance can even be enhanced. (C) 2004 Elsevier B.V. All rights reserved.



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Materials Science; Physics


Figueiras, F; Araujo, JP; Amaral, VS; Tavares, PB; Sousa, JB; Vieira, JM

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