Cd1-xMnxS Nanoparticles: Far-Infrared Phonon Spectroscopy

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Phonon spectra of Cd1-xMnxS (x = 0; 0.01; 0.05; 0.1; 0.15; 0.3) nanoparticles (d ~ 4.5 nm) have been investigated by far-infrared reflection (FIR) (spectral range 40 - 600 cm-1, temperature range 80 – 300 K) and Raman spectroscopy (100 – 700 cm-1, 300 K). Cd1-xMnxS nanoparticles have been synthesized by using aqueous solution precipitation. We obtained interesting features in FIR spectra: there are expected modes of bulk CdS (240 cm-1, 300 cm-1), new modes connected with nano-size of CdS (130 cm-1, 170 cm-1) and additional mode at 120 cm-1 in Cd1-xMnxS nanoparticles which can be assigned to the presence of Mn. The position of obtained modes is discussed in the frame of the linear chain model with both mass and force constant defects. Raman spectroscopy gives us only the mode at 300 cm-1 and its second harmonic.

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Periodical:

Materials Science Forum (Volumes 480-481)

Edited by:

A. Méndez-Vilas

Pages:

237-242

Citation:

N.Ž. Romčević et al., "Cd1-xMnxS Nanoparticles: Far-Infrared Phonon Spectroscopy", Materials Science Forum, Vols. 480-481, pp. 237-242, 2005

Online since:

March 2005

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$38.00

[1] J.K. Furdyna and J. Kossut: Semicond. and Semimetals Vol. 25 (Academic Press, New York, 1988).

[2] R.J. Bandaranayake et al.: J. Magnetism and Magnetic Materials Vol. 169 (1997), p.289.

[3] N. Feltin et al.: J. Phys. Chem. B Vol. 103(1999), p.4.

[4] M.I. Čomor, B. Babić-Stojić and J.M. Nedeljković: Materials Science Forum Vol. 413 (2003), p.17.

[5] R.N. Bhargava: J. Lumin. Vol. 70(1996), p.85.

[6] R.N. Bhargava et al.: Phys. Rev. Lett. Vol. 72 (1994), p.416.

[7] Y. Wang et al.: Solid State Commun. Vol. 77 (1991), p.33.

[8] Y. Oka and K. Yanata: J. Lumin. Vol. 70 (1996), p.35.

[9] M.A. Chamarro et al.,: J. Crystal Growth Vol. 159 (1996), p.853.

[10] S. Biernachi et al.: Semicond. Sci. Technol. Vol. 11 (1996), p.48.

[11] L. Levy et al.: J. Phys. Chem. B Vol. 100 (1996), p.18332.

[12] L. Levy et al.: J. Phys. Chem. B Vol. 101 (1997), p.9153; Adv. Mater. Vol. 10 (1998), p.53.

[13] L. E. Brus: J. Chem. Phys. Vol. 80 (1984), p.4403.

[14] J.S. Suh and J.S. Lee: Chem. Phys. Lett. Vol. 281 (1997), p.384.

[15] Y. Wang et al.: Solid State Commun. Vol. 77 (1991), p.33.

[16] M.A. Nusimovici and J. Birman: Phys. Rev. Vol. 156( 3) (1967), p.156.

[17] M.A. Nusimovici and M. Balkanski: Phys. Rev. B Vol. 1(2) (1970), p.603.

[18] H.W. Verleur and A.S. Barker: Phys. Rev. Vol. 155(3) (1967), p.155.

[19] G. Lucovsky et al.: Phys. Rev. Vol. 2(8) (1970), p.3295.

[20] L. Genzel and W. Bauhofer: Z. Physik B Vol. 25 (1976), p.13.

[21] A.S. Barker and A.J. Sievers: Rev. of Modern Physics Vol. 47 (1975), Suppl. 2, S1.

[22] I.F. Chang and S.S. Mitra: Adv. Phys. Vol. 20 (1971), p.359.

[23] M. C. Klein et al.: Phys. Rev. B Vol. 42(17) (1990), p.11123.

[24] E. Rocaet al.: Phys. Rev. B Vol. 19 (1994), p.13704.

[25] T.D. Krauss et al.: Phys. Rev. Lett. Vol. 76(8) (1996), p.1336.

[26] M.P. Chamberlain et al.: Phys. Rev. Vol. 51(3) (1995), p.1680.

[27] L.A. Gribov: Theory of infrared spectra of Polymers (Nauka, Moscow, 1977).

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