Strain induced magnetoelectric coupling between magnetite and BaTi O3

H. F. Tian, T. L. Qu, L. B. Luo, J. J. Yang, S. M. Guo, H. Y. Zhang, Y. G. Zhao, J. Q. Li

Research output: Contribution to journalArticlepeer-review

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Abstract

Magnetite (Fe3 O4) thin films have been grown on ferroelectric BaTi O3 (BTO) single crystal substrates by pulsed laser deposition. Transmission- electron microscope observations demonstrate the orientation relationship between Fe3 O4 and BTO as [400] Fe3 O4 [200]BTO and [004] Fe3 O4 [002]BTO. Experimental measurements of magnetization, coercivity and remanent magnetization of the films show abrupt jumps at around phase transition temperatures of BTO and opposite jump signs are observed for the in-plane and out-of-plane measurements. The magnetization jumps can be suppressed by a strong external magnetic field. These results were discussed in terms of the interface strain induced changes of magnetic domain structure in the Fe3 O4 film. This work demonstrates the presence of strong magnetoelectric coupling between Fe3 O4 and BTO.

Original languageEnglish (US)
Article number063507
JournalApplied Physics Letters
Volume92
Issue number6
DOIs
StatePublished - 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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