Open AccessThe structure, magnetic properties, and positron annihilation spectra of Tb2AlFe16-xMnx compounds
Author(s) -
Hao Yan-Ming,
Yan Da-Li,
Fu Bin,
Liqun Wang,
Xiaopeng Hao,
Baoyi Wang
Publication year - 2009
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.58.6494
Subject(s) - magnetization , annihilation , positron annihilation , materials science , curie temperature , condensed matter physics , ferromagnetism , positron , diffraction , spectral line , nuclear magnetic resonance , physics , magnetic field , nuclear physics , electron , optics , quantum mechanics , astronomy
The structural and magnetic properties have been investigated by means of X-ray diffraction, magnetization measurements, and positron annihilation technique. The X-ray diffraction shows that the Tb2AlFe16-xMnx x=1—8 compounds have a hexagonal Th2Ni17-type structure. The positron annihilation spectra show that Mn substitution for Fe has the ferromagnetic interaction decreased, and that there exists a strong magnetoelastic effect in Tb2AlFe16-xMnx compound. The magnetization measurement shows that the Curie temperature and the spontaneous magnetization of Tb2AlFe16-xMnx compounds decrease rapidly with increasing x.