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Effect of Oxygen Content on the Electrical Transport Properties of La0.4Ca0.6MnO3?y

✍ Scribed by Cai, W. ;Zhao, Y.G. ;He, Y.Z. ;Zhang, L.W. ;Zhu, M.H. ;Huang, H.S. ;Liu, M.L. ;Cao, B.S.

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
102 KB
Volume
187
Category
Article
ISSN
0031-8965

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✦ Synopsis

The effect of oxygen content on the electrical transport properties of La 0.4 Ca 0.6 MnO 3--y was studied. Upon decreasing oxygen content, the lattice parameters a, b and c of the samples increase and the electrical resistivity of the samples also increases abruptly, contradicting what is expected in terms of Mn 4+ /Mn 3+ ratio. This work suggests that other factors rather than the ratio of Mn 4+ /Mn 3+ may play a role in determining the properties of La 0.4 Ca 0.6 MnO 3--y with less oxygen contents.

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a, b), I.O. Troyanchuk (b), D.D. Khalyavin (b), N. Hamad (a), L. Haupt (a), P. Fro È bel (a), K. Ba È rner 1 ) (a), E. Gmelin (c), Q. Huang (d), and J.W. Lynn (d) (a) IV. Physikalisches Institut der Universita Èt Go È ttingen, Bunsenstr. 11± ±15, D-37073 Go È ttingen, Germany