Preparation and mechanism of formation for perovskite solid-solution 0.9 PMN-0.1 PT via a soft-mechanochemical route

Jong Gab Baek; Kenjiro Gomi; Tetsuhiko Isobe; Mamoru Senna

doi:10.2497/jjspm.43.717

Preparation and mechanism of formation for perovskite solid-solution 0.9 PMN-0.1 PT via a soft-mechanochemical route

Jong Gab Baek, Kenjiro Gomi, Tetsuhiko Isobe, Mamoru Senna

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The formation process of perovskite solid-solution 0.9Pb(Mg_1/3Nb_2/3)-0.1PbTiO₃ (0.9PMN-0.1PT) from a stoichiometric mixture of PbO, Nb₂O₅, TiO₂ and Mg(OH)₂ by a soft-mechanochemical technique was studied. Single phase of perovskite 0.9PMN-0.1PT powder was obtained after heating at 850°C for 4 h of the mechanically activated precursor with a stoichiometric composition maintained. After milling a starting mixture for 60 min, Nb⁵⁺ was locally reduced to Nb²⁺ and the amount of -OH in Mg(OH)₂ decreased, as confirmed by X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FT-IR), respectively. Formation of precursors seems to be accomplished by preferential solid-state acid/base reactions between Nb₂O₅ and Mg(OH)₂ under mechanical stress. All these observations consistently explain the enhanced rate of formation of perovskite solid-solution 0.9PMN-0.1PT from the mechanically activated mixture on subsequent heating.

Original language	English
Pages (from-to)	717-721
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	43
Issue number	6
DOIs	https://doi.org/10.2497/jjspm.43.717
Publication status	Published - 1996 Jun

Keywords

Mg(OH)
Perovskite solid-solution 0.9PMN-0.1PT
Soft-mechanochemical technique

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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10.2497/jjspm.43.717

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Preparation and mechanism of formation for perovskite solid-solution 0.9 PMN-0.1 PT via a soft-mechanochemical route. / Baek, Jong Gab; Gomi, Kenjiro; Isobe, Tetsuhiko et al.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 43, No. 6, 06.1996, p. 717-721.

Research output: Contribution to journal › Article › peer-review

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abstract = "The formation process of perovskite solid-solution 0.9Pb(Mg1/3Nb2/3)-0.1PbTiO3 (0.9PMN-0.1PT) from a stoichiometric mixture of PbO, Nb2O5, TiO2 and Mg(OH)2 by a soft-mechanochemical technique was studied. Single phase of perovskite 0.9PMN-0.1PT powder was obtained after heating at 850°C for 4 h of the mechanically activated precursor with a stoichiometric composition maintained. After milling a starting mixture for 60 min, Nb5+ was locally reduced to Nb2+ and the amount of -OH in Mg(OH)2 decreased, as confirmed by X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FT-IR), respectively. Formation of precursors seems to be accomplished by preferential solid-state acid/base reactions between Nb2O5 and Mg(OH)2 under mechanical stress. All these observations consistently explain the enhanced rate of formation of perovskite solid-solution 0.9PMN-0.1PT from the mechanically activated mixture on subsequent heating.",

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author = "Baek, {Jong Gab} and Kenjiro Gomi and Tetsuhiko Isobe and Mamoru Senna",

year = "1996",

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AU - Isobe, Tetsuhiko

AU - Senna, Mamoru

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N2 - The formation process of perovskite solid-solution 0.9Pb(Mg1/3Nb2/3)-0.1PbTiO3 (0.9PMN-0.1PT) from a stoichiometric mixture of PbO, Nb2O5, TiO2 and Mg(OH)2 by a soft-mechanochemical technique was studied. Single phase of perovskite 0.9PMN-0.1PT powder was obtained after heating at 850°C for 4 h of the mechanically activated precursor with a stoichiometric composition maintained. After milling a starting mixture for 60 min, Nb5+ was locally reduced to Nb2+ and the amount of -OH in Mg(OH)2 decreased, as confirmed by X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FT-IR), respectively. Formation of precursors seems to be accomplished by preferential solid-state acid/base reactions between Nb2O5 and Mg(OH)2 under mechanical stress. All these observations consistently explain the enhanced rate of formation of perovskite solid-solution 0.9PMN-0.1PT from the mechanically activated mixture on subsequent heating.

AB - The formation process of perovskite solid-solution 0.9Pb(Mg1/3Nb2/3)-0.1PbTiO3 (0.9PMN-0.1PT) from a stoichiometric mixture of PbO, Nb2O5, TiO2 and Mg(OH)2 by a soft-mechanochemical technique was studied. Single phase of perovskite 0.9PMN-0.1PT powder was obtained after heating at 850°C for 4 h of the mechanically activated precursor with a stoichiometric composition maintained. After milling a starting mixture for 60 min, Nb5+ was locally reduced to Nb2+ and the amount of -OH in Mg(OH)2 decreased, as confirmed by X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FT-IR), respectively. Formation of precursors seems to be accomplished by preferential solid-state acid/base reactions between Nb2O5 and Mg(OH)2 under mechanical stress. All these observations consistently explain the enhanced rate of formation of perovskite solid-solution 0.9PMN-0.1PT from the mechanically activated mixture on subsequent heating.

KW - Mg(OH)

KW - Perovskite solid-solution 0.9PMN-0.1PT

KW - Soft-mechanochemical technique

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Preparation and mechanism of formation for perovskite solid-solution 0.9 PMN-0.1 PT via a soft-mechanochemical route

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