Lattice dynamics and phase transitions in KNbO3 and K 0.5Na0.5NbO3 ceramics

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

Volumn 56, Issue 9, 2009, Pages 1843-1849

  Buixaderas, Elena ^a   Nuzhnyy, Dmitri ^a   Gregora, Ivan ^a   Kamba, Stanislav ^a   Berta, Milan ^a   Malič, Barbara ^b   Kosec, Marja ^b  

^a INSTITUTE OF PHYSICS   (Czech Republic)

^b UNIVERSITY OF LJUBLJANA   (Slovenia)

Author keywords

[No Author keywords available]

Indexed keywords

CERAMIC SAMPLES; DIELECTRIC STRENGTHS; FIRST ORDER TRANSITIONS; FIRST-ORDER; HIGH TEMPERATURE; HIGHER FREQUENCIES; LATTICE DYNAMICS; LOWER FREQUENCIES; ORTHORHOMBIC PHASIS; RAMAN ACTIVE MODES; RHOMBOHEDRAL PHASE; RHOMBOHEDRAL PHASIS; SOFT MODES; TETRAGONAL PHASIS; THZ SPECTROSCOPY;

CERAMIC MATERIALS; CRYSTAL LATTICES; INFRARED SPECTROSCOPY; SODIUM; SOLIDS;

PHASE TRANSITIONS;

EID: 70350154551     PISSN: 08853010     EISSN: None     Source Type: Journal    
DOI: 10.1109/TUFFC.2009.1259     Document Type: Article

References (20)

1. L. A. Reznitchenko, A. V. Turik, E. M. Kuznetsova, and V. P. Sakhnenko, "Piezoelectricity in NaNbO3 ceramics," J. Phys. Condens. Matter, vol.13, no.17, pp. 3875-3881, 2001.
2. E. Wiesendanger, "Dielectric, mechanical and optical properties of orthorhombic KNbO3," Ferroelectrics, vol.6, no.1, pp. 263-281, 1974.
3. G. Shirane, R. Newnham, and R. Pepinsky, "Dielectric properties and phase transitions in NaNbO3 and (Na,K)NbO3," Phys. Rev., vol.96, no.3, pp. 581-588, 1954.
4. M. D. Fontana, G. Metrat, J. L. Servoin, and F. Gervais, "Infrared spectroscopy in KNbO3, through the successive ferroelectric phase transitions," J. Phys. Chem., vol.17, no.3, pp. 483-514, 1984.
5. A. M. Glazer and H. D. Megaw, "Studies of the lattice parameters and domains in the phase transitions of NaNbO3," Acta Crystallogr. A, vol.29, pt. 5, pp. 489-495, 1973.
6. M. D. Fontana, G. E. Kugel, G. Metrat, and C. Carabatos, "Longwavelength phonons in the different phases of KNbO3," Phys. Status Solidi B, vol.103, no.1, pp. 211-219, 1981.
7. P h. Pruzan, D. Gourdain, and J. C. Chervin, "Vibrational dynamics and phase diagram of KNbO3 up to 30 GPa and from 20 to 500 K," Phase Transit., vol.80, no.10-12, pp. 1103-1130, 2007.
8. R. J. C. Lima, W. Paraguassu, P. T. C. Freire, J. M. Sasaki, F. E. A. Melo, J. Mendes Filho, and S. Lanfredi, "Temperature-dependent Raman spectra of K0.2Na0.8NbO3 ceramics," J. Raman Spectrosc., vol.36, no.1, pp. 28-32, 2005.
9. Y. Shiratori, A. Magrez, and C. Pithan, "Phase transformation of KNaNb2O6 induced by size effect," Chem. Phys. Lett., vol.391, no.4-6, pp. 288-292, 2004.
10. E. Buixaderas, D. Nuzhnyy, I. Gregora, S. Kamba, B. Malic, and M. Kosec, "Polar modes in K0.5Na0.5NbO3 ceramics," presented at the 9th European Conf. on Applications of Polar Dielectrics, Rome, Aug. 2008.
11. A. Ahtee and A. M. Glazer, "Lattice parameters and tilted octahedra in sodium-potassium niobate solid solutions," Acta Crystallogr. A, vol.32, pt. 3, pp. 434-446, 1976.
12. F. Gervais, "High-temperature infrared reflectivity spectroscopy by scanning interferometry," in Infrared and Millimeter Waves, K. J. Button, Ed. New York: Academic, 1983, vol.8, ch. 7, pp. 279-339.
13. I. Richetsky, J. Petzelt, and T. Ostapchuk, "Grain-boundary and crack effects on the dielectric response of high-permittivity films and ceramics," Appl. Phys. Lett., vol.81, no.22, pp. 4224-4227, 2002.
14. E. Buixaderas, I. Gregora, S. Kamba, J. Petzelt, and M. Kosec, "Raman spectroscopy and effective dielectric function in PLZT x/40/60," J. Phys. Condens. Matter, vol.20, no.34, art. no. 345229, 2008.
15. T. P. Dougherty, G. P. Wiederrecht, K. A. Nelson, M. H. Garret, H. P. Jenssen, and C. Warde, "Femtosecond time-resolved spectroscopy of soft modes in structural phase transitions of perovskites," Phys. Rev. B, vol.50, no.13, pp. 8996-9019, 1994.
16. V. A. Shuvaeva, K. Yanagi, K. Yagi, K. Sakaue, and H. Terauchi, "Local structure and nature of phase transitions in KNbO3," Solid State Commun., vol.106, no.6, pp. 335-339, 1998.
17. E. Buixaderas, S. Kamba, and J. Petzelt, "Lattice dynamics and central-mode phenomena in the dielectric response of ferroelectrics and related materials," Ferroelectrics, vol.308, no.1, pp. 131-192, 2004. (Pubitemid 44097247)
18. J. Hlinka, T. Ostapchuk, D. Nuzhnyy, J. Petzelt, P. Kuzel, C. Kadlec, P. Vanek, I. Ponomareva, and L. Bellaiche, "Coexistence of the phonon and relaxation soft modes in the terahertz dielectric response of tetragonal BaTiO3," Phys. Rev. Lett., vol.101, no.16, art. no. 167402, 2008.
19. V. Lingwal, B. S. Semwal, and N. S. Panwal, "Dielectric properties of Na1-xKxNbO3 in orthorhombic phase," Bull. Mater. Sci., vol.26, no.6, pp. 619-625, 2003.
20. P . Dubernet and J. Ravez, "Microwave dielectric measurements of ferroelectrics up to 800 K," Ferroelectrics, vol.211, no.3, pp. 261- 267, 1994.