Pearson’s notation

The second position in the symbol is occupied by a standard notation of Bravais lattice. Thus, the first two elements in the Pearson s symbol are letters and they classify all available alloy structures according to 14 Bravais lattices, as shown in Table 6.1. 

FIGURE 4.52 Left the lattice of the corundum after Apostolescu (1982). Right the structural cell of AiPj under which the Pearson spatial notation is specified, along the international notation, and the number of the spatial group, according to the Tables 2.17 and 2.16, respectively after U.S. Naval Research Laboratory/Center for Computational Materials Science (2003). 

Despite the non-isothermal nature of the film blowing process we will develop here an isothermal model to show general effects and interactions during the process. In the derivation we follow Pearson and Petrie s approach [20], [19] and [21]. Even this Newtonian isothermal model requires an iterative solution and numerical integration. Figure 6.21 presents the notation used when deriving the model. 

Barrett, C.S. and Massalski, T.B. (1980) Structure of Metals, 3rd edition, Pergamon, New York. Together with Pearson (below) gives more on the Strukturbericht notation. 

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