Exchange coupling and coercivity enhancement in cuprate/manganite bilayers

J. F. Ding*, Y. F. Tian, W. J. Hu, W. N. Lin, Tao Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

We report on the magnetic properties of cuprate/manganite bilayers composed of antiferromagnetic (AFM) La2CuO4 and ferromagnetic La0.70Sr0.30MnO3. The temperature dependent magnetization data indicate an interfacial spin-glass state. Furthermore, the bilayer exhibits significant enhancement of coercivity compared to the La 0.70Sr0.30MnO3 single layer and reaches 705 Oe at 5 K. The dependence of coercivity on the AFM layer thickness indicates that the enhancement cannot be explained by the interfacial charge diffusion. Our results suggest that the exchange coupling between Mn and Cu spins and the magnetic frustration at the La2CuO4/La 0.70Sr0.30MnO3 interface must be considered to harness the properties of cuprate/manganite heterostructures.

Original languageEnglish (US)
Article number032401
JournalApplied Physics Letters
Volume102
Issue number3
DOIs
StatePublished - Jan 21 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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