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Search for Anisotropy of Mössbauer Absorption in Biotite
Author(s) -
Chandra R.,
Tripathi R. P.,
Lokanathan S.
Publication year - 1978
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220880229
Subject(s) - anisotropy , biotite , mössbauer spectroscopy , crystal (programming language) , materials science , absorption (acoustics) , crystallography , analytical chemistry (journal) , chemistry , mineralogy , condensed matter physics , optics , physics , metallurgy , composite material , chromatography , programming language , quartz , computer science
A search for anisotropy of Mössbauer factor ƒ in biotite single crystal is made by observing the angular variation of Mössbauer γ‐absorption directed at various angles to the normal to the plane of the sheet and also by looking for the Goldanskii‐Karyagin effect in the powdered specimen. It is suggested that the absence of any detectable anisotropy of the ƒ‐values in biotite, and indeed in other Fe containing compounds, in general, is possibly due to the large value of the ƒ‐fraction. This is in contrast to tin‐ and rare‐ earth compounds where such anisotropy is detectable even at room temperatures.