Anisotropic optical and magnetic response in self-assembled TiN–CoFe2 nanocomposites
- Purdue Univ., West Lafayette, IN (United States)
- Purdue Univ., West Lafayette, IN (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Univ. of Nebraska, Lincoln, NE (United States)
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Transition metal nitrides (e.g., TiN) have shown tremendous promise in optical metamaterials for nanophotonic devices due to their plasmonic properties comparable to noble metals and superior high temperature stability. Vertically aligned nanocomposites (VANs) offer a great platform for combining two dissimilar functional materials with a one-step deposition technique toward multifunctionality integration and strong structural/property anisotropy. Here, we report a two-phase nanocomposite design combining ferromagnetic CoFe2 nanosheets in the plasmonic TiN matrix as a new hybrid plasmonic metamaterial. The hybrid metamaterials exhibit anisotropic optical and magnetic responses, as well as a pronounced magneto-optical coupling response evidenced by Magneto-optic Kerr Effect measurement, owing to the novel vertically aligned structure. This work demonstrates a new TiN-based metamaterial with anisotropic properties and multifunctionality toward light polarization modulation, optical switching, and integrated optics.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
- Grant/Contract Number:
- 89233218CNA000001; NA0003525
- OSTI ID:
- 1960199
- Alternate ID(s):
- OSTI ID: 2311499
OSTI ID: 1989162
- Report Number(s):
- LA-UR--23-21211
- Journal Information:
- Materials Today Nano, Journal Name: Materials Today Nano Vol. 22; ISSN 2588-8420
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English