Core-shell metallic alloy nanopillars-in-dielectric hybrid metamaterials with magneto-plasmonic coupling
- Sun Yat-Sen Univ., Guangzhou (China); Purdue Univ., West Lafayette, IN (United States)
- Purdue Univ., West Lafayette, IN (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Nebraska, Lincoln, NE (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Combining plasmonic and magnetic properties, namely magneto-plasmonic coupling, inspires great research interest and the search for magneto-plasmonic nanostructure becomes considerably critical. In this work, we designed a nanopillar-in-matrix structure with core–shell alloyed nanopillars for both BaTiO3 (BTO)-Au0.5Co0.5 (AuCo) and BTO-Au0.25Cu0.25Co0.25Ni0.25 (AuCuCoNi) hybrid systems, i.e., ferromagnetic alloy cores (e.g., Co or CoNi) with plasmonic shells (e.g., Au or Au/Cu). These core–shell alloy nanopillars are uniformly embedded into a dielectric BTO matrix to form a vertically aligned nanocomposite (VAN) structure. Both hybrid systems present excellent epitaxial quality and interesting multi-functionality, e.g., high magnetic anisotropy, magneto-optical coupling response, tailorable plasmonic resonance wavelength, tunable hyperbolic properties and strong optical anisotropy. These alloyed nanopillars-in-matrix designs provide enormous potential for complex hybrid material designs with multi-functionality and demonstrate strong interface enabled magneto-plasmonic coupling along with plasmonic and magnetic performance.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR); Guangdong Basic and Applied Basic Research Foundation
- Grant/Contract Number:
- 89233218CNA000001; NA0003525; SC0020077
- OSTI ID:
- 1832396
- Alternate ID(s):
- OSTI ID: 1834114
- Report Number(s):
- LA-UR--21-28792
- Journal Information:
- Materials Today, Journal Name: Materials Today Vol. 51; ISSN 1369-7021
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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