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Phase relationships in the La2O3-SrO-Nb2O5 system

Z.K. Huang,D.S. Yan,T.Y. Tien,I.W. Chen

Materials Letters（1991）

Cited 9|Views6
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Abstract
The phase relationships in the La2O3SrONb2O5 system were studied. The isothermal section at 1400°C of this system was determined. Within this system, two niobates, LaSr2Nb2O8.5 (1-2-2) with hexagonal structure and LaSr2NbO6 (1-2-1) with cubic structure occurred. Same family compounds, YSr2Nb2O8.5 and LaSr2Ta2O8.5, could be also synthesized. In the SrO-rich area of the SrONb2O5 subsystem, a tetragonal solid solution with a composition range of Sr2–4NbO4.5–6.5 (i.e. 66.7–80 at.% SrO) was also observed.
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materials science and engineering,engineering
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