TY - JOUR
T1 - Structural study on optical recording materials Ge2Sb2+xTe5 and GeBi2Te4
AU - Shamoto, Shin ichi
AU - Yamada, Noboru
AU - Matsunaga, Toshiyuki
AU - Proffen, Thomas
N1 - Funding Information:
The authors thank Mr. K. Kawahara for sample preparation. This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan. Los Alamos National Laboratory is funded by DOE under Contract no. W-7405-ENG-36. The upgrade of NPDF has been funded by NSF through Grant no. DMR 00-76488.
PY - 2006/11/27
Y1 - 2006/11/27
N2 - Crystal structures of optical recording materials Ge2Sb2+xTe5 and GeBi2Te4 have been studied in terms of the fast phase transition mechanism by both real- and reciprocal-space Rietveld analyses of pulsed neutron powder diffraction data. These crystalline phases had large local lattice distortions. In addition, the crystallite size of GeBi2Te4 was very small (about 150 Å). These results suggest that the similarity of entropy between crystalline and amorphous phases plays an important role in terms of the fast phase transition mechanism.
AB - Crystal structures of optical recording materials Ge2Sb2+xTe5 and GeBi2Te4 have been studied in terms of the fast phase transition mechanism by both real- and reciprocal-space Rietveld analyses of pulsed neutron powder diffraction data. These crystalline phases had large local lattice distortions. In addition, the crystallite size of GeBi2Te4 was very small (about 150 Å). These results suggest that the similarity of entropy between crystalline and amorphous phases plays an important role in terms of the fast phase transition mechanism.
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U2 - 10.1016/j.physb.2006.05.363
DO - 10.1016/j.physb.2006.05.363
M3 - Article
AN - SCOPUS:33751350299
VL - 385-386 I
SP - 574
EP - 577
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
ER -