ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
In connection with a previous work, magnetic and crystallographic properties of the off-stoichiometric compounds R2Fe14Si2 of the R2Fe17-type are studied. Magnetization curves at T=5 K are observed in a high magnetic field up to 15 T for loose powders as well as for field-aligned powders of the samples expressed in the title. Temperature dependencies of the spontaneous magnetizations are also determined in the temperature region from 5 K to the respective Curie temperature. Detailed x-ray analysis is carried out for Y2Fe14Si2. Conclusions are as follows: (1) the Si substitution brings about significant displacements of the 12j-site Fe as well as the dumbell-site Fe from their original positions, which is discussed in connection with other present experimental data such as the remarkable enhancement of the Curie temperature caused by the Si substitution; (2) averaged Fe moment reduction is strictly determined for the present samples; (3) all the samples have a planer anisotropy at room temperature, taking this fact the magnetization curves for the field-aligned samples are analyzed; (4) exchange interaction between R sublattice and Fe sublattice has been determined for all the samples. © 1996 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.362442
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