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

研究成果: Article査読

2 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)717-721
ページ数5
ジャーナルFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
43
6
DOI
出版ステータスPublished - 1996 6

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

フィンガープリント 「Preparation and mechanism of formation for perovskite solid-solution 0.9 PMN-0.1 PT via a soft-mechanochemical route」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル