Open AccessSpin reorientation and M?ssbauer effect studies on Tb0.3Dy0.7(Fe1－xAlx)1.95 alloys
Author(s) -
郑小平,
张佩峰,
范多旺,
李发伸,
成昭华,
沈保根
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.944
Subject(s) - materials science , condensed matter physics , mössbauer spectroscopy , mössbauer effect , spin (aerodynamics) , magnetostriction , crystallography , physics , chemistry , magnetic field , thermodynamics , quantum mechanics
The effect of Al substitution for Fe on the spin reorientation and Mssbauer spectra of a series of Tb03Dy07(Fe1-xAlx)195 alloys (x=00501015020025030035) at room temperature and 77K has been investigated systematically. The results indicate that the easy magnetization direction in the {100} plane deviates slightly from the main axis of symmetry, namely spin rerioentation. A small amount of non_magnetic phase exists for x=015, and the alloys become paramagnetism when x>015 at room temperture, but at 77K the alloys still remain to be magnetic phase even at x=02. At room temperature and 77K, the hyperfine field decreases and the isomer shift increases with increasing concentration of Al, and the quaduple splitting QS shows weak concentration dependence.