Polar Phonons in Relaxor Ferroelectric 0.2PSN-0.4PMN-0.4PZN

• Authors: J. Macutkevič , S. Kamba , A. Pashkin , J. Banys , K. Bormanis , A. Sternberg
• Languages of publication: EN

Abstracts

EN

Relaxor ferroelectrics 0.2PbSc_{1/2}Nb_{1/2}O_3-0.4PbMg_{1/3}Nb_{2/3}O_3-0.4PbZn_{1/3}Nb_{2/3}O_3 ceramics were studied by means of the Fourier transform infrared reflection and THz transmission spectroscopy in the temperature range of 20-500 K. On heating from low temperatures, the A_1 component of the strongly split TO_1 mode softens towards the Burns temperature, but the softening ceases near 400 K, which could be a signature of polar cluster percolation temperature.

Keywords

EN

78.30.-j; 63.20.-e; 71.55.Jv

Discipline

• 78.30.-j: Infrared and Raman spectra(for vibrational states in crystals and disordered systems, see 63.20.-e and 63.50.-x, respectively; for Raman spectra of superconductors, see 74.25.nd)
• 63.20.-e: Phonons in crystal lattices(for phonons in superconductors, see 74.25.Kc; see also 43.35.Gk Phonons in crystal lattice, quantum acoustics—in Acoustics Appendix)
• 71.55.Jv: Disordered structures; amorphous and glassy solids

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 3
• Pages: 879-882

Dates

published

2008-03

received

2007-08-26

Contributors

author

J. Macutkevič

• Semiconductor Physics Institute, A. Goštauto 11, Vilnius, Lithuania

author

S. Kamba

• Institute of Physics, ASCR, Na Slovance 2, Prague 8, Czech Republic

author

A. Pashkin

• Institute of Physics, ASCR, Na Slovance 2, Prague 8, Czech Republic

author

J. Banys

• Faculty of Physics, Vilnius University, Sauletekio 9, Vilnius, Lithuania

author

K. Bormanis

• Institute of Solid State Physics, University of Latvia, 8 Kengaraga str., Riga, Latvia

author

A. Sternberg

• Institute of Solid State Physics, University of Latvia, 8 Kengaraga str., Riga, Latvia

References

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Identifiers

DOI

10.12693/APhysPolA.113.879