Transition-element doping effects in La0.7Ca0.3MnO3

Ghosh, K. ; Ogale, S. B. ; Ramesh, R. ; Greene, R. L. ; Venkatesan, T. ; Gapchup, K. M. ; Bathe, Ravi ; Patil, S. I. (1999) Transition-element doping effects in La0.7Ca0.3MnO3 Physical Review B, 59 (1). pp. 533-537. ISSN 0163-1829

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The influence of transition element (TE) doping on the magnetotransport properties of La0.7Ca0.3MnO3 is studied for the entire transition element series (TE=Cr, Fe, Co, Ni, Cu, Zn) for a fixed (5% at Mn sites) dopant concentration. The systematics of different properties such as the metal-insulator transition temperature Tρ, the Curie temperature Tc, ρ(Tρ),ρ(5K), and the maximum value of magnetoresistance (MR), with respect to lattice parameter and the ionic radii of dopants, are examined. The important findings include an interesting correlation between the maximum MR, the lattice parameter, and the ionic radii, and some distinct features exhibited by Fe, Cu, and Zn dopants.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:26884
Deposited On:08 Dec 2010 13:02
Last Modified:11 Jun 2011 11:28

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