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Title: Multi-frequency ferromagnetic resonance investigation of nickel nanocubes encapsulated in diamagnetic magnesium oxide matrix

For this, partially aligned nickel nanocubes were grown epitaxially in a diamagnetic magnesium oxide (MgO:Ni) host and studied by a continuous wave ferromagnetic resonance (FMR) spectroscopy at the X-band (9.5 GHz) from ca. 117 to 458 K and then at room temperature for multiple external magnetic fields/resonant frequencies from 9.5 to 330 GHz. In contrast to conventional magnetic susceptibility studies that provided data on the bulk magnetization, the FMR spectra revealed the presence of three different types of magnetic Ni nanocubes in the sample. Specifically, three different ferromagnetic resonances were observed in the X-band spectra: a line 1 assigned to large nickel nanocubes, a line 2 corresponding to the nanocubes exhibiting saturated magnetization even at ca. 0.3 T field, and a high field line 3 (g eff ~ 6.2) tentatively assigned to small nickel nanocubes likely having their hard magnetization axis aligned along or close to the direction of the external magnetic field. Based on the analysis of FMR data, the latter nanocubes possess an anisotropic internal magnetic field of at least ~1.0 T in magnitude.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ; ORCiD logo [5]
  1. Bridgewater State Univ., Bridgewater, MA (United States). Dept. of Chemical Sciences
  2. North Carolina State Univ., Raleigh, NC (United States). Center for Advanced Materials and Smart Structures and Dept. of Materials Science and Engineering
  3. North Carolina State Univ., Raleigh, NC (United States). Center for Advanced Materials and Smart Structures and Dept. of Materials Science and Engineering; US Army Research Office (ARO), Durham, NC (United States). Materials Science Division; Univ. of Texas, El Paso, TX (United States). Dept. of Physics
  4. US Army Research Office (ARO), Durham, NC (United States). Materials Science Division
  5. North Carolina State Univ., Raleigh, NC (United States). Dept. of Chemistry
Publication Date:
Grant/Contract Number:
FG02-02ER15354; S10RR023614; CHE-0840501; 2009-IDG-1015; DMR 1157490
Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 120; Journal Issue: 22; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Research Org:
North Carolina State Univ., Raleigh, NC (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); North Carolina Biotechnology Center (NCBC), Durham, NC (United States); National Institutes of Health (NIH)
Contributing Orgs:
National High Magnetic Field Lab. (NHMFL), Tallahassee, FL (United States)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; ferromagnetism; magnetic moments; nanoparticles; linewidths; nickel; ferromagnetic resonance; magnetic anisotropy; magnetic fields; diamagnetism
OSTI Identifier:
1465126
Alternate Identifier(s):
OSTI ID: 1336479

Nellutla, Saritha, Nori, Sudhakar, Singamaneni, Srinivasa R., Prater, John T., Narayan, Jagdish, and Smirnov, Alex I.. Multi-frequency ferromagnetic resonance investigation of nickel nanocubes encapsulated in diamagnetic magnesium oxide matrix. United States: N. p., Web. doi:10.1063/1.4971869.
Nellutla, Saritha, Nori, Sudhakar, Singamaneni, Srinivasa R., Prater, John T., Narayan, Jagdish, & Smirnov, Alex I.. Multi-frequency ferromagnetic resonance investigation of nickel nanocubes encapsulated in diamagnetic magnesium oxide matrix. United States. doi:10.1063/1.4971869.
Nellutla, Saritha, Nori, Sudhakar, Singamaneni, Srinivasa R., Prater, John T., Narayan, Jagdish, and Smirnov, Alex I.. 2016. "Multi-frequency ferromagnetic resonance investigation of nickel nanocubes encapsulated in diamagnetic magnesium oxide matrix". United States. doi:10.1063/1.4971869. https://www.osti.gov/servlets/purl/1465126.
@article{osti_1465126,
title = {Multi-frequency ferromagnetic resonance investigation of nickel nanocubes encapsulated in diamagnetic magnesium oxide matrix},
author = {Nellutla, Saritha and Nori, Sudhakar and Singamaneni, Srinivasa R. and Prater, John T. and Narayan, Jagdish and Smirnov, Alex I.},
abstractNote = {For this, partially aligned nickel nanocubes were grown epitaxially in a diamagnetic magnesium oxide (MgO:Ni) host and studied by a continuous wave ferromagnetic resonance (FMR) spectroscopy at the X-band (9.5 GHz) from ca. 117 to 458 K and then at room temperature for multiple external magnetic fields/resonant frequencies from 9.5 to 330 GHz. In contrast to conventional magnetic susceptibility studies that provided data on the bulk magnetization, the FMR spectra revealed the presence of three different types of magnetic Ni nanocubes in the sample. Specifically, three different ferromagnetic resonances were observed in the X-band spectra: a line 1 assigned to large nickel nanocubes, a line 2 corresponding to the nanocubes exhibiting saturated magnetization even at ca. 0.3 T field, and a high field line 3 (geff ~ 6.2) tentatively assigned to small nickel nanocubes likely having their hard magnetization axis aligned along or close to the direction of the external magnetic field. Based on the analysis of FMR data, the latter nanocubes possess an anisotropic internal magnetic field of at least ~1.0 T in magnitude.},
doi = {10.1063/1.4971869},
journal = {Journal of Applied Physics},
number = 22,
volume = 120,
place = {United States},
year = {2016},
month = {12}
}