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A search for internal distortion in CeBi
Author(s) -
Mueller M. H.,
Shaked H.,
Vogt O.
Publication year - 1980
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889880012721
Subject(s) - distortion (music) , diffraction , physics , optics , limit (mathematics) , condensed matter physics , mathematics , mathematical analysis , amplifier , optoelectronics , cmos
At the I A magnetic transition (12.5 K) in CeBi a theoretical study has suggested that either the Ce or Bi sublattices should move with respect to the other. Such a distortion would give rise to extra reflections of the form 0 ′ 0 ′ l +½. A search for such a reflection using a Bond X‐ray diffraction technique was conducted. The 007½ line was not found and an upper limit of ~2 × 10 −4 was set for the magnitude of the expected internal distortion. This limit is valid for a surface layer whose thickness equals the penetration depth of the X‐radiation which is about 0.4 × 10 −2 mm.