Raman scattering studies of the Ba2MnWO6 and Sr2MnWO6 double perovskites
Article Abstract:
Polycrystalline Ba2MnWO6 (BMW) and SrMnWO6(SMW) samples were studied between 80 and 1200 K by Raman scattering spectroscopy. Raman scattering studies with different wavelengths revealed a resonant bands between 300 and 800 cm(super -1) and it was found that SMW transformed from tetragonal to the cubic phase between 670 and 690 K; the phase transition temperature was dependent on sample preparation conditions, and it was considerably lower than in the case of large grain size powders.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Characterization of the surface enhanced Raman scattering (SERS) of bacteria
Article Abstract:
The study reports the surface enhanced Raman scattering (SERS) of a number of species and strains of bacteria obtained on novel gold nanoparticle covered SiO2 substrates excited at 785 nm. The surface enhancement effects allows the observation of Raman spectra of single bacterial cells excited at low incident powers and short data acquisition times.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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