Digital HREM imaging of yttrium atoms in YB{sub 56} with YB{sub 66} structure

Journal Article · Sun Feb 01 00:00:00 EST 1998 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1997.7619· OSTI ID:642177

Oku, Takeo; Carlsson, A; Wallenberg, L R; Malm, J O; Bovin, J O ^[1]; Higashi, Iwami ^[2]; Tanaka, Takaho; Ishizawa, Yoshio ^[3]

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1. Lund Univ. (Sweden)
2. Riken, Wako, Saitama (Japan). Inst. of Physical and Chemical Research
3. National Inst. for Research in Inorganic Materials, Tsukuba, Ibaraki (Japan)

The arrangement of yttrium atoms in YB{sub 56} with YB{sub 66} structure was determined by high-resolution electron microscopy (HREM) using a slow-scan CCD camera. Digital HREM images recorded along the [100], [110], and [111] directions of the YB{sub 56} crystals showed averaged yttrium atom positions in the boron clusters, which were also confirmed by image simulation. Digital HREM images recorded from thin regions (<5 nm) directly showed the local yttrium atom arrangements in the YB{sub 56}. In particular, the Y-hole, which consists of a single yttrium vacancy and a single yttrium atom, was detected in the boron clusters. The calculated images based on the proposed local structure model for yttrium atom arrangements agreed well with the observed images.

• OSTI ID: 642177
• Journal Information: Journal of Solid State Chemistry, Vol. 135, Issue 2; Other Information: PBD: 1 Feb 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL STRUCTURE
YTTRIUM BORIDES
CRYSTAL MODELS
LATTICE PARAMETERS
ELECTRON MICROSCOPY
EXPERIMENTAL DATA