Jump to main content
Jump to site search

Issue 35, 2017
Previous Article Next Article

Magnetoelastoelectric coupling in core–shell nanoparticles enabling directional and mode-selective magnetic control of THz beam propagation

Author affiliations

Abstract

Magnetoelastoelectric coupling in an engineered biphasic multiferroic nanocomposite enables a novel magnetic field direction-defined propagation control of terahertz (THz) waves. These core–shell nanoparticles are comprised of a ferromagnetic cobalt ferrite core and a ferroelectric barium titanate shell. An assembly of these nanoparticles, when operated in external magnetic fields, exhibits a controllable amplitude modulation when the magnetic field is applied antiparallel to the THz wave propagation direction; yet the same assembly displays an additional phase modulation when the magnetic field is applied along the propagation direction. While field-induced magnetostriction of the core leads to amplitude modulation, phase modulation is a result of stress-mediated piezoelectricity of the outer ferroelectric shell.

Graphical abstract: Magnetoelastoelectric coupling in core–shell nanoparticles enabling directional and mode-selective magnetic control of THz beam propagation

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 May 2017, accepted on 06 Aug 2017 and first published on 07 Aug 2017


Article type: Paper
DOI: 10.1039/C7NR03504G
Citation: Nanoscale, 2017,9, 13052-13059
  •   Request permissions

    Magnetoelastoelectric coupling in core–shell nanoparticles enabling directional and mode-selective magnetic control of THz beam propagation

    M. Dutta, K. Natarajan, S. Betal, R. P. Prasankumar, A. S. Bhalla and R. Guo, Nanoscale, 2017, 9, 13052
    DOI: 10.1039/C7NR03504G

Search articles by author

Spotlight

Advertisements