Paper Titles

Nickel Ferrite: Combustion Synthesis, Characterization and Magnetic Properties
p.618

Ce_0.8Gd_0.2O_1.9 Powders Synthesized by Co-Precipitation and Amorphous Citrate Processes
p.624

Synthesis of La_0.8 Sr_0.2 MnO_3±δ Powders by Amorphous Citrate and Pechini Techniques
p.630

Doped Tin Oxide Nanometric Films for Environment Monitoring
p.636

Synthesis and Characterization of 0.9PMN-0.1PT Powders by the Use of a Modified Columbite Precursor
p.642

Synthesis of WC Powders by Reactive Milling
p.648

Obtaining of the Ceramics Pigments (Fe, Zn)Cr₂O₄ Using Waste of Electroplating as Raw Material
p.654

Aluminas by Thermal Activation of Fibrillar Pseudoboehmite Powders
p.658

Combustion Synthesis of Cu_1-xNi_xCr₂O₄ Spinel for Catalytic Applications
p.663

HomeMaterials Science ForumMaterials Science Forum Vols. 498-499Synthesis and Characterization of 0.9PMN-0.1PT...

Synthesis and Characterization of 0.9PMN-0.1PT Powders by the Use of a Modified Columbite Precursor

Article Preview

Abstract:

The complex perovskite compound 0.9PbMg1/3Nb2/3O3-0.1PbTiO3 is one of the most promising relaxor ceramic because the addition of lead titanate increases Tm by about 5°C/mol% from intrinsic Tm value for pure PMN (near –7 to -15°C). A Ti-modified columbite precursor was used to prepare PMN-PT powders containing single perovskite phase. This variation on columbite route includes Ti insertion in MgNb2O6 orthorhombic structure so that individual PT synthesis becomes unnecessary. Furthermore, effects of Li additive on columbite and PMN-PT structures were studied by XRD to verify the phase formation at each processing step. XRD data were also used for the structural refinement by Rietveld method. The additive acts increasing columbite powders crystallinity, and the amount of perovskite phase was insignificantly decreased by lithium addition. By SEM micrographs it was observed that Li presence in PMN-PT powders leads to the formation of rounded primary particles and for 1mol% of additive, the grain size is not changed, different from when this concentration is enhanced to 2mol%.

You might also be interested in these eBooks

Advanced Powder Technology IV

Info:

Periodical:

Materials Science Forum (Volumes 498-499)

Pages:

642-647

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.498-499.642

Citation:

Cite this paper

Online since:

November 2005

Authors:

Juliana C. Bruno, A.A. Cavalheiro, M.A. Zaghete, M. Cilense, José Arana Varela

Keywords:

Ceramic, Chemical Synthesis, Columbite, PMN-PT, Rietveld Method

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

[1] Y.H. Chen, K. Uchino, M. Shen and D. Viehland, J. Appl. Phys. 90 3 (2001), pp.1455-1458.

[2] V. Koval and J. Briancin, Ceramics-Silikáty 47 1 (2003), pp.8-12.

[3] R. Yimnirun, S. Ananta, E. Meechoowas and S. Wongsaenmai, Phys. D: Appl. Phys. 36 (2003), pp.1615-1619.

DOI: 10.1088/0022-3727/36/13/329

[4] N. Takesue; Y. Fuji and H. You, Ferroelectrics 270 (2002), p.1335.

[5] R. Zhang, S. Peng, D. Xido, Y. Wang, B. Yang, J. Zhu, P. Yu and W. Zhang, Cryst. Res. Techolog. 33 5 (1998), pp.827-832.

[6] O. Noblanc, P. Gaucher and G. Calvarin, J. Appl. Phys. 79 8 (1996), pp.4291-4297.

[7] J. Kelly, M. Leonard, C. Tantigate and A. Safári, J. Am. Ceram. Soc. 80 4 (1997), pp.957-964.

[8] B. Dkhil, J.M. Kiat, G. Calvarin, G. Baldinozzi, S.B. Vakhrushev and E. Suard, Phys. Ver. B, 65 (2001), pp.024104-8.

[9] S.L. Swartz and T.R. Shrout, Mat. Res. Bull. 17 (1982), p.1245.

[10] M. Lejeune and J.P. Boilot, Ceram. Intern. 2 8 (1982), p.119.

[11] D.S. Paik and S. Komarneni, J. Mater. Science 34 (1999), pp.2313-2317.

[12] M. Villegas, C. Moure, P. Durán, J.F. Fernandez, Z. Samardzija and M. Kosec, Key Eng. Mat. 132-136 (1997), pp.1076-1079.

[13] A.A. Cavalheiro, S.M. Barrionuevo, M.A. Zaghete, M. Cilense and J. A Varela, Mater. Sci. Forum 204-206 (2003), p.785.

[14] M. Villegas and A.C. Caballero, J. Mater. Res. 14 3 (1999), pp.891-897.

[15] A.A. Cavalheiro, M.A. Zaghete, C.O. Paiva-Santos and J.A. Varela, J. Mater. Res. 5 4(2002), pp.399-404.

[16] A.A. Cavalheiro, M.A. Zaghete, C.O. Paiva-Santos, M. Cilense and J.A. Varela, Bol. Esp. Ceram. Vídrio 41 2 (2002), pp.265-270.

[17] J.C. Bruno, A.A. Cavalheiro, M.A. Zaghete, M. Cilense and J. A Varela, Submitted to Mater. Chem. Phys.

[18] M.P. Pechini, U.S. Patent # 3. 330. 697, July 11, (1967).

[19] H.M. Rietveld, J. Appl. Cryst. 10 (1969) 65.

[20] D.B. Wiles and R.A. Young, J. Appl. Cryst. 15 (1982) 430.

[21] R.A. Young, A.C. Larson, C.O. Paiva-Santos, User's Guide to Program DBWS-9807 for Rietveld Analysis. School of Physics, Georgia Inst. of Tech. Atlanta, GA30332, (1998).

[22] A.A. Cavalheiro, M.A. Zaghete, J.A. Varela,M. Villegas and J.F. Fernàndez, Ferroelectrics 268 (2002), pp.315-320.