single phase reaction

The results show that the content of tetragonal phase is increasing in BNBT ceramics by direct reaction sintering method but still exhibiting a single phase of perovskite structure.

结果表明，直接反应烧结法不影响BNBT陶瓷的钙钛矿相结构，但可使准同型相界处组成的四方相含量增加；

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The addition of alcohol improved the pressure of reaction vessel, which is in favor of synthesis of one single phase; however, compositions were changed at the same time.

实验发现，乙醇的添加，提高了反应釜中的压力，更有利于生成单相，但同时改变了其成分组成。

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Single phase spinel type composite oxide Zn_2SnO_4 nanocrystals were prepared by solid state reaction at low temperature using SnCl_4 · 5H_2O, Zn ( NO_3)_2 · 6H_2O and NaOH as raw materials.

以SnCl4·5H2O，Zn（NO3）2·6H2O和NaOH为原料，用低温固相反应法合成尖晶石型复合氧化物Zn2SnO4纳米晶体。

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