Influence of the nanoparticles agglomeration state in the quantum-confinement effects: Experimental evidences

Journal Article · Sun Mar 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4914107· OSTI ID:22454466

Romero, J. J.; Fernandez, J. F. ^[1]

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1. Electroceramic Department, Instituto de Cerámica y Vidrio, CSIC, Kelsen 5, 28049, Madrid (Spain)

The agglomeration state facilitates particle-particle interaction which produces important effects in the phonon confinement effects at the nanoscale. A partial phonon transmission between close nanoparticles yields a lower momentum conservation relaxation than in a single isolated nanoparticle. It means a larger red shift and broadening of the Raman modes than the expected ones for Raman quantum confinement effects. This particle-particle interaction can drive to error when Raman responses are used to estimate the size of the nanoscaled materials. In this work different corrections are suggested to overtake this source of error.

• OSTI ID: 22454466
• Journal Information: AIP Advances, Vol. 5, Issue 3; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
AGGLOMERATION
NANOPARTICLES
NANOSTRUCTURES
PARTICLE INTERACTIONS
PHONONS