Large Longitudinal Magnetoelectric Coupling in NiFe2O4-BaTiO3 Laminates

Deepak Patil; June-Hee Kim; Yi Sheng Chai; Joong-Hee Nam; Jeong-Ho Cho; Byung-Ik Kim; Kee Hoon Kim

doi:10.1143/APEX.4.073001

Large Longitudinal Magnetoelectric Coupling in NiFe2O4-BaTiO3 Laminates

Materials Science 2011-08-12 v1

Authors: Deepak Patil , June-Hee Kim , Yi Sheng Chai , Joong-Hee Nam , Jeong-Ho Cho , Byung-Ik Kim , Kee Hoon Kim

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Abstract

In contrast to the Pb-based magnetoelectric laminates (MELs), we find in the BaTiO3 and NiFe2O4 laminates (number of layers n = 5-25) that the longitudinal magnetoelectric (ME) voltage coefficient Alpha E33 becomes much larger than the transverse one due to preferential alignment of magnetic moments along the NiFe2O4 plane. Moreover, upon decreasing each layer thickness down to 15 um, we realize enhanced Alpha E33 up to 18 mV/ (cm Oe) and systematic increase of the ME sensitivity in proportion to n to achieve the largest in the Pb-free MELs (400*10^-6V/Oe), thereby providing pathways for tailoring ME coupling in mass-produced, environment friendly laminates.

Keywords

magnetocaloric effect electronic structure of materials magnetoresistance

Cite

@article{arxiv.1108.2329,
  title  = {Large Longitudinal Magnetoelectric Coupling in NiFe2O4-BaTiO3 Laminates},
  author = {Deepak Patil and June-Hee Kim and Yi Sheng Chai and Joong-Hee Nam and Jeong-Ho Cho and Byung-Ik Kim and Kee Hoon Kim},
  journal= {arXiv preprint arXiv:1108.2329},
  year   = {2011}
}

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16 pages, 3 figures

Large Longitudinal Magnetoelectric Coupling in NiFe2O4-BaTiO3 Laminates

Abstract

Keywords

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