SHORT-RANGE AND LONG-RANGE ORDER PARAMETERS IN DISORDERED SOLID SOLUTIONS
SHORT-RANGE AND LONG-RANGE ORDER PARAMETERS IN DISORDERED SOLID SOLUTIONS
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DOI：
10.1103/physrev.120.1648
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发表时间：
1960-01-01
期刊：
影响因子：
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通讯作者：
COWLEY, JM
中科院分区：
文献类型：
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作者：
COWLEY, JM
对于由不止一种类型的部分有序结构单元阵列组成的结晶固体，可以用结构的自卷积或帕特森函数来描述和定义有序状态。帕特森函数的峰高与近程阶参数α i成正比。周期分量由远程阶参数描述，定义为距离原点较远处α i的极限值。讨论了以往长程序参数定义的局限性。
For a crystalline solid made up of a partially ordered array of structural units of more than one type it is shown that the state of order may be described and defined in terms of the self-convolution, or Patterson, function of the structure. The peak heights of the Patterson function are proportional to the short-range order parameters, α i. The periodic component is described by the long-range order parameters, defined as the limiting values of the α i at large distances from the origin. The limitations of previous definitions of long-range order parameters are discussed.