Three-Dimensional Imaging of a Long-Period Stacking Ordered Phase in Mg₉₇Zn₁Gd₂ Using High-Voltage Electron Microscopy

• Sato Kazuhisa

  Institute for Materials Research, Tohoku University Present Address: Research Center for Ultra-High Voltage Electron Microscopy, Osaka University

• Tashiro Shunya

  Depertment of Materials Science, Tohoku University

• Yamaguchi Yohei

  Depertment of Materials Science, Tohoku University

• Kiguchi Takanori

  Institute for Materials Research, Tohoku University

• Konno Toyohiko J.

  Institute for Materials Research, Tohoku University

• Yamamoto Tomokazu

  Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University

• Yasuda Kazuhiro

  Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University

• Matsumura Syo

  Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University

Bibliographic Information

Other Title

• Three-Dimensional Imaging of a Long-Period Stacking Ordered Phase in Mg₉₇Zn₁Gd₂ Using High-Voltage Electron Microscopy

Abstract

Spatial configurations and lateral morphology of the 14H long-period stacking ordered (LPSO) phase have been studied by single tilt-axis electron tomography using high-voltage scanning transmission electron microscopy (STEM) operated at 1 MV. A “Quonset hut-like” lateral shape of the LPSO was found in a tomogram of a specimen as thick as 1.7 μm. The reconstructed volume reveals spatial distribution of residual particulate precipitates of (Mg, Zn)₃Gd phase 20–30 nm in diameters. The precipitates act as a source of solute elements for the formation and growth processes of 14H LPSO. 1 MV-STEM realizes enough resolution for imaging the morphology of LPSO as well as high electron transmittance (~4.1 μm) without any obvious electron irradiation damages on microstructures.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 57 (6), 918-921, 2016

  The Japan Institute of Metals and Materials

Keywords

• high-voltage electron microscopy (HVEM)
• long-period stacking order (LPSO)
• magnesium-zinc-gadolinium
• electron tomography
• lateral growth
• scanning transmission electron microscopy (STEM)

Details

• CRID: 1390001204252848512
• NII Article ID: 130005153140
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.m2016021
• ISSN: 13475320
• ISSN: 13459678
• HANDLE: 11094/89449
• NDL BIB ID: 027331315
• Web Site: http://id.ndl.go.jp/bib/027331315
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027331315
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/57/6/57_M2016021/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed