Ukrainian Journal of Physical Optics 

Number  4, Volume  2,  2001

Home page
 

Other articles 

in this issue
Size effects in Raman spectra of Sn2P2S6 ferroelectrics
1Gomonnai A.V., 2Vysochanskii Yu.M., 1Azhniuk Yu.M., 2Prits I.P., 1Romanova L.G., 1Solomon A.M.

1 Institute of Electron Physics, Ukr. Nat. Acad. Sci., 21Universytetska St., Uzhhorod, 88000, Ukraine
2 Uzhhorod National University, 46 Pidhirna St., Uzhhorod, 88000, Ukraine

download full version

Room-temperature Raman measurements of the Sn2P2S6 microcrystals are reported. The red shift, and broadening of the intense high-frequency first-order  bands around 380 cm–1 and in the range 550–600 cm–1 with the microcrystal size decrease are observed. The possible mechanisms (phonon confinement, surface phonon scattering), responsible for these effects, are discussed.

Keywords: microcrystals, Raman scattering, phonon confinement, surface phonons.

doi 10.3116/16091833/2/4/182/2001
References
1. Vysochanskii YuM and Slivka VYu, 1992.Uspekhi Fiz. Nauk 162: 139.
2. Ishikawa K, Yoshikawa K and Okada N, 1988. Phys. Rev. B 37: 5852.
        doi:10.1103/PhysRevB.37.5852 http://dx.doi.org/10.1103/PhysRevB.37.5852
3. Zhong WI, Jiang BI, Zhang PL, Ma JM, Cheng HM, Yang ZH and Li LX, 1993. J. Phys.: Condens. Matter 5: 2619.
        doi:10.1088/0953-8984/5/16/018 http://dx.doi.org/10.1088/0953-8984/5/16/018
4. Colla EV, Fokin AV, Koroleva EYu, Kumzerov YuA, Vakhrushev SV and Savenko VN, Nanostructured Materials 12: 963.
5. Uchino K, Sadanaga E and Hirose T, 1989. J. Amer. Ceram. Soc. 72: 1555.
        doi:10.1111/j.1151-2916.1989.tb07706.x http://dx.doi.org/10.1111/j.1151-2916.1989.tb07706.x
6. Zhong WL, Wang YG, Zhang PL and Qu WD, 1994. Phys. Rev. B 50: 698.
        doi:10.1103/PhysRevB.50.698 http://dx.doi.org/10.1103/PhysRevB.50.698
7. Gaponenko SV, 1996. Fiz. Tekhn. Poluprovodn. 30: 577.
8. Bourdon X and Cajipe VB, 1998. J. Sol. St. Chem. 141: 290.
        doi:10.1006/jssc.1998.7919 http://dx.doi.org/10.1006/jssc.1998.7919
9. Dittmar G and Schaefer H, 1974. Z. Naturforsch. B. 29: 312.
10. Voroshilov YuV, Vysochanskii YuM, Grabar AA, Potori MV, Prits IP, Rizak VM, Sejkovskaja.LA, Slivka VYu and Vatsenko AV, 1990. Ukr. Fiz. Zh. 35: 71.
11. Vysochanskii YuM, Slivka VYu, Voroshilov YuV, Gurzan MI and Chepur DV, 1979. Fiz. Tverd. Tela. 21: 2402.
12. Gomonnai AV, Vysochanskii YuM, Grabar AA and Slivka VYu, 1981. Fiz. Tverd. Tela. 23: 3623.
13. Gomonnai AV, Vysochanskii YuM and Slivka VYu, 1982. Fiz. Tverd. Tela. 24: 1068.
14. Hayashi S, 1985. Sol. State Commun. 56: 375.
        doi:10.1016/0038-1098(85)90406-5 http://dx.doi.org/10.1016/0038-1098(85)90406-5
15. Fauchet PM and Campbell IH, 1986. Sol. State Commun. 58: 739.
        doi:10.1016/0038-1098(86)90513-2 http://dx.doi.org/10.1016/0038-1098(86)90513-2
16. Roy A and Sood A.K, 1996. Phys. Rev. B 53: 12127
        doi:10.1103/PhysRevB.53.12127 http://dx.doi.org/10.1103/PhysRevB.53.12127
Home | Instructions to Authors | Editorial Board | Meetings & Exhibitions