Strain transfer in porous multiferroic composites of CoFe2O4 and PbZrxTi1−xO3
Open Access
- 9 May 2022
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 120 (19)
- https://doi.org/10.1063/5.0090702
Abstract
This manuscript examines the mechanism of strain-coupling in a multiferroic composite of mesoporous cobalt ferrite (CFO), conformally filled with lead zirconate titanate (PZT). We find that when the composites are electrically poled, remanent strain from the piezoelectric PZT layer can be transferred to the magnetostrictive CFO layer. X-ray diffraction shows that this strain transfer is greatest in the most porous samples, in agreement with magnetometry measurements, which show the greatest change in sample saturation magnetization in the most porous samples. Strain analysis shows that porosity both accommodates greater lattice strain and mitigates the effects of substrate clamping in thin film strain-coupled composites.Funding Information
- National Science Foundation (EEC-1160504)
- National Science Foundation (DGE-1650604)
- National Science Foundation (DGE-2034835)
- U.S. Department of Energy (DE-AC02-76SF00515)
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