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The Effect of Fe Doping on the Magnetoresistive Behavior of Layered Perovskites La1.4Ca1.6Mn2O7

✍ Scribed by Yuan, C.L. ;Yu, T. ;Song, W.H. ;Ye, S.L. ;Wang, S.G. ;Dai, J.M. ;Sun, Y.P.

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
140 KB
Volume
178
Category
Article
ISSN
0031-8965

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✦ Synopsis

The effect of the partial substitution of Mn with Fe in the layered perovskites (x 0.2) La 1.4 Ca 1.6 Mn 2Β± Β±x Fe x O 7 has been studied. The results show that conduction and ferromagnetism have been consistently suppressed by Fe doping. The colossal magnetoresistance is enhanced by Fe doping in some cases. The formation of ferromagnetic and antiferromagnetic clusters originating from the random substitutions of Mn 3+ by Fe 3+ ions has been suggested to explain the experimental results.

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