Refine your search:     
Report No.
 - 

Local crystal structures of Ge$$_{2}$$Sb$$_{2}$$Te$$_{5}$$ revealed by the atomic pair distribution function analysis

Shamoto, Shinichi  ; Kodama, Katsuaki  ; Iikubo, Satoshi; Taguchi, Tomitsugu; Yamada, Noboru*; Proffen, T.*

Two types of optical recording crystalline material Ge$$_{2}$$Sb$$_{2}$$Te$$_{5}$$ have been studied by neutron and X-ray powder diffraction measurements. One is the crystalline cubic-phase Ge$$_{2}$$Sb$$_{2}$$Te$$_{5}$$. The other is nanocrystalline-phase Ge$$_{2}$$Sb$$_{2}$$Te$$_{5}$$. For the nanocrystalline phase, the local crystal structure and the particle size distribution were obtained simultaneously by PDF analysis using a spherical-particle form factor. The lattice parameter is longer than that of the crystalline phase, suggesting an antimony-richer composition than the matrix. This compositional deviation would form the nanoparticle, resulting in nucleation-dominated crystal growth.

Accesses

:

- Accesses

InCites™

:

Percentile:49.12

Category:Physics, Applied

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.