The rhombohedral phase with incommensurate modulation in Na1/2Bi1/2TiO3
The rhombohedral phase with incommensurate modulation in Na1/2Bi1/2TiO3
复制标题
Na1/2Bi1/2TiO3 中具有不相称调制的菱面体相
DOI：
10.1080/01411590500496238
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发表时间：
2006
影响因子：
1.6
通讯作者：
S. Vakhrushev
中科院分区：
文献类型：
--
作者：
A. Balagurov;E. Koroleva;A. Naberezhnov;V. Sakhnenko;B. Savenko;N. Ter;S. Vakhrushev
用中子散射方法研究了钛酸铋钠（NBT）从四方相到三方相的相变。研究发现，菱方相沿前驱体四方相的四重轴方向具有沿着无公度调制。在相变唯象理论的框架内，从对称性的角度讨论了无公度调制的出现。
The phase transition from tetragonal to rhombohedral phase in sodium bismuth titanate (NBT) is studied by means of neutron scattering. It is found that the rhombohedral phase has incommensurate modulation along the four-fold axis of the precursor tetragonal phase. The appearance of the incommensurate modulation is discussed on the symmetry grounds in the framework of the phenomenological theory of phase transitions.