Magnetoelectric Vertically Aligned Nanocomposite of YFeO3 and CoFe2O4
Abstract
Self‐assembled two‐phase vertically aligned nanocomposites consisting of ferromagnetic pillars embedded in a ferroelectric matrix provide an attractive geometry for observing magnetoelectric coupling based on the strain‐coupled magnetostrictive and piezoelectric effects at the interfaces. In perovskite‐spinel nanocomposites the ferroelectric phase typically consists of BiFeO3, BaTiO3 or Pb(Zr,Ti)O3. Here, the ferroelectric phase is Y‐rich YFeO3 which exhibits ferroelectricity originating from the local inversion symmetry breaking caused by YFe antisite defects. Coherent interfaces observed between Y‐rich YFeO3 and a magnetic spinel CoFe2O4 in a vertically aligned nanocomposite enable strain‐mediated magnetoelectric coupling at room temperature, confirming the ferroelectricity and piezoelectricity in Y‐rich YFeO3 and extending the range of magnetoelectric nanocomposite compositions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 25, 2022
- Source ID
- 10.1002/aelm.202200036
Entities
People
- Abinash Kumar
- Caroline Anne Ross
- Eunsoo Cho
- James M. LeBeau
- Shuai Ning
- Tingyu Su
Organizations
- Army Research Office
- Massachusetts Institute of Technology
- Nankai University
- National Natural Science Foundation of China