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Structural study on the crystallization behavior of Sb 3 Te 2 alloy for phase change memory
Author(s) -
Sun Chang Woo,
Lee Jeong Yong,
Youm Minsoo,
Kim Yong Tae
Publication year - 2007
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200600005
Subject(s) - alloy , crystallography , crystal structure , transmission electron microscopy , crystallization , stacking , materials science , lattice (music) , fourier transform , chemistry , physics , thermodynamics , nanotechnology , metallurgy , acoustics , organic chemistry , quantum mechanics
The atomic crystal structure of the Sb 3 Te 2 binary alloy has been investigated with high‐resolution transmission electron microscopy (HR‐TEM) and fast Fourier transform patterns. As a result, there is inconsistency between the previous theoretical model and the experimental result. But, from the calculations of lattice parameters and the number of layers in the unit cell, it is found that the Sb 3 Te 2 alloy can be crystallized into the Sb 2 Te structure with P $ \bar 3 $ m1 space group and the difference between stacking sequences of the Sb 3 Te 2 and the Sb 2 Te structures has been discussed with the proposed atomic arrangement model of unit cells. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)