Structural study on optical recording materials Ge2Sb2+xTe5 and GeBi2Te4

Shin ichi Shamoto; Noboru Yamada; Toshiyuki Matsunaga; Thomas Proffen

doi:10.1016/j.physb.2006.05.363

Structural study on optical recording materials Ge₂Sb_2+xTe₅ and GeBi₂Te₄

Shin ichi Shamoto, Noboru Yamada, Toshiyuki Matsunaga, Thomas Proffen

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Crystal structures of optical recording materials Ge₂Sb_2+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.

Original language	English
Pages (from-to)	574-577
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	385-386 I
DOIs	https://doi.org/10.1016/j.physb.2006.05.363
Publication status	Published - 2006 Nov 27

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2006.05.363

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title = "Structural study on optical recording materials Ge2Sb2+xTe5 and GeBi2Te4",

abstract = "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 {\AA}). 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.",

author = "Shamoto, {Shin ichi} and Noboru Yamada and Toshiyuki Matsunaga and Thomas Proffen",

note = "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.",

year = "2006",

month = nov,

day = "27",

doi = "10.1016/j.physb.2006.05.363",

language = "English",

volume = "385-386 I",

pages = "574--577",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

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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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M3 - Article

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VL - 385-386 I

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

ER -

Structural study on optical recording materials Ge₂Sb_2+xTe₅ and GeBi₂Te₄

Abstract

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