Park, Yu Jin Lee, Jeong Yong Kim, Yong Tae 2024-01-21T03:04:11Z 2024-01-21T03:04:11Z 2021-09-01 2006-05-15 0003-6951 https://pubs.kist.re.kr/handle/201004/135509 Surface energy and the equilibrium shape of hexagonal structured grain in Ge2Sb2Te5 were investigated by a transmission electron microscopy (TEM) study. As a result, we have found that the equilibrium shape of hexagonal structured Ge2Sb2Te5 is a lengthened shape with (0001) plane at the major axis, which was experimentally revealed by TEM images. The hexagonal structured Ge2Sb2Te5 grain has low surface energy in {0001}, {1 (1) over bar 03}, and {(1) over bar 106} planes which have no additional broken bonds from the atoms on the steps. Therefore, it is strongly facetted by the plane having low surface energy, thus, becoming an equilibrium shape. (c) 2006 American Institute of Physics. English AMER INST PHYSICS TRANSMISSION ELECTRON-MICROSCOPY THIN-FILMS RESISTANCE MEASUREMENTS METASTABLE GE2SB2TE5 CRYSTAL NUCLEATION CRYSTALLIZATION DIFFRACTION MEMORY Surface energy and the equilibrium shape of hexagonal structured Ge2Sb2Te5 grain Article 10.1063/1.2204837 1 APPLIED PHYSICS LETTERS, v.88, no.20 APPLIED PHYSICS LETTERS 88 20 scie scopus 000237682100024 2-s2.0-33646885014 Physics, Applied Physics Article TRANSMISSION ELECTRON-MICROSCOPY THIN-FILMS RESISTANCE MEASUREMENTS METASTABLE GE2SB2TE5 CRYSTAL NUCLEATION CRYSTALLIZATION DIFFRACTION MEMORY Ge2Sb2Te5 Surface energy