Colossal magnetoresistance in La-Y-Ca-Mn-O films

L. H. Chen*, T. H. Tiefel, S. Jin, T. T.M. Palstra, R. Raraesh, C. Kwon

*Corresponding author for this work

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Abstract

Magnetoresistance behavior of La0.60 Y0.07CaMnOx thin films epitaxially grown on LaAlO3 has been investigated. The films exhibit colossal magnetoresistance with the MR ratio in excess of 108% at ∼60K, H = 7T, which is the highest ever reported for thin film manganites. The partial substitution of La3+ ions with much smaller Y3+ ions results in more than an order of magnitude improvement in MR as compared to the undoped La-Ca-Mn-O material, both in bulk and thin film form. The La-Y-Ca-Mn-O films exhibit a strong dependence of magneto-resistance on film thickness with the maximum MR occurring at a film thickness of ∼1000Å.

Original languageEnglish
Pages (from-to)4692-4694
Number of pages3
JournalIEEE transactions on magnetics
Volume32
Issue number5 PART 2
DOIs
Publication statusPublished - 1 Dec 1996
Externally publishedYes

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    Chen, L. H., Tiefel, T. H., Jin, S., Palstra, T. T. M., Raraesh, R., & Kwon, C. (1996). Colossal magnetoresistance in La-Y-Ca-Mn-O films. IEEE transactions on magnetics, 32(5 PART 2), 4692-4694. https://doi.org/10.1109/20.539120