A model for the origin of the cell-doubling phase transitions in clinopyroxene and body-centred anorthite
A model for the origin of the cell-doubling phase transitions in clinopyroxene and body-centred anorthite
复制标题
单斜辉石和体心钙长石细胞倍增相变起源的模型
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
R. Angel
中科院分区：
文献类型：
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作者：
A. Christy;R. Angel
Comparisons of the structures of the high-pressure and high-temperature phases of both anorthite and clinopyroxene show that they are quite distinct although they share a common space group and site symmetries for all atoms. The low-pressure, low-temperature phases in both systems are formed by zone-boundary transitions from the high-pressure or high-temperature structures, and have structures that are made up of the alternation of portions of the high-pressure and high-temperature structures. This behaviour is analyzed in terms of the order parameter behaviour of the high-symmetry structures, and it is shown that the stability of the low-symmetry phases arises naturally from inhomogeneity in this order parameter.
