以下为句子列表：
英文: The nano-crystalline BaTiO3 was successfully synthesized by grinding the mixture of BaO and anatase TiO2 in a high-energy mill in nitrogen atmosphere and its mechanism was also discussed.
中文: 发现在一定操作参数条件下,粉磨初期为无定形形成期（15h以前）,混合物颗粒粒度减小,晶格畸变,转变为无定形;粉磨中期为固相反应期（15～30h）;BaO与TiO2在机械力的作用下产生固相反应生成BaTiO3,同时BaTiO3晶粒长大;粉磨后期又转入动态平衡期（30h以后）,固相反应基本结束,已生成的BaTiO3的晶粒生长与粉磨引起的晶粒减小处于动态平衡;XRD,SEM;TEM研究表明:合成BaTiO3纳米晶体的晶粒尺寸为10～30nm。
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英文: The synthesizing process and mechanism of nano-crystalline BaTiO3 by mechanochemistry that ground the mixture powder of BaO and anatase TiO2 was studied by XRD, TEM and HR- TEM.
中文: 晶体形成经过成核和生长两个阶段,但生长到一定程度时达到动态平衡,合成的BaTiO3纳米晶体颗粒尺寸为10～30 nm。
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