Exploring the Magnetoelectric Coupling at the Composite Interfaces of FE/FM/FE Heterostructures
Journal Article
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· Scientific Reports
- Univ. of Puerto Rico, San Juan, PR (United States). Inst. of Functional Nanomaterials. Dept. of Physics; Carnegie Inst. of Science, Washington, DC (United States). Geophysical Lab. Extreme Materials Initiative; DOE/OSTI
- Univ. of Puerto Rico, San Juan, PR (United States). Inst. of Functional Nanomaterials. Dept. of Physics; West Virginia Univ., Morgantown, WV (United States). Dept. of Physics and Astronomy
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Inst. for Functional Imaging of Materials
- Univ. of Maryland, College Park, MD (United States). Inst. for Research in Electronics and Applied Physics
- Smart Nanomaterials Solutions, Orlando, FL (United States)
- National Inst. of Technology, Rourkela (India). Dept. of Physics & Astronomy
- National Physical Lab. (CSIR), New Delhi (India)
- Queen's Univ., Belfast, Northern Ireland (United Kingdom). School of Maths and Physics. Centre for Nanostructured Media
- Norfolk State Univ., Norfolk, VA (United States). Center for Materials Research
- Univ. of Puerto Rico, San Juan, PR (United States). Inst. of Functional Nanomaterials. Dept. of Physics
Multiferroic materials have attracted considerable attention as possible candidates for a wide variety of future microelectronic and memory devices, although robust magnetoelectric (ME) coupling between electric and magnetic orders at room temperature still remains difficult to achieve. In order to obtain robust ME coupling at room temperature, we studied the Pb(Fe0.5Nb0.5)O3/Ni0.65Zn0.35Fe2O4/ Pb(Fe0.5Nb0.5)O3 (PFN/NZFO/PFN) trilayer structure as a representative FE/FM/FE system. We report the ferroelectric, magnetic and ME properties of PFN/NZFO/PFN trilayer nanoscale heterostructure having dimensions 70/20/70nm, at room temperature. The presence of only (00l) refection of PFN and NZFO in the X-ray diffraction (XRD) patterns and electron diffraction patterns in Transmission Electron Microscopy (TEM) confirm the epitaxial growth of multilayer heterostructure. The distribution of the ferroelectric loop area in a wide area has been studied, suggesting that spatial variability of ferroelectric switching behavior is low, and film growth is of high quality. The ferroelectric and magnetic phase transitions of these heterostructures have been found at ~575K and ~650K, respectively which are well above room temperature. These nanostructures exhibit low loss tangent, large saturation polarization (Ps ~ 38µC/cm2) and magnetization (Ms ~ 48emu/cm3) with strong ME coupling at room temperature revealing them as potential candidates for nanoscale multifunctional and spintronics device applications.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1624438
- Journal Information:
- Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 8; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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