DocumentCode :
1042434
Title :
Sublattice magnetization and cation distribution in BaMg2 Fe16 O27 (Mg2 W) ferrite
Author :
Albanese, Gianfranco ; Asti, Giovanni
Author_Institution :
Istituto di Fisica delĺUniversità di Parma and Gruppo Nazionale di Struttura della Materia, Parma, Italy
Volume :
6
Issue :
2
fYear :
1970
fDate :
6/1/1970 12:00:00 AM
Firstpage :
158
Lastpage :
161
Abstract :
Mössbauer measurements were carried out in compound BaMg2 Fe16 O27 (Mg2 W) by utilizing both polycrystalline and single-crystal samples. The resonant γ-absorption spectra have been measured with the absorbers at temperatures of 85 to 800°K and in some cases in the presence of a 15-kOe external magnetic field. The values of the hyperfine magnetic fields Hhf at the Fe57nuclei in the different sublattices as functions of temperature have been measured. By fitting the curve of the saturation magnetization σ versus temperature, the cation distribution over the available lattice sites has been deduced. From the value of σ extrapolated at 0°K, it turns out that the number of Bohr magnetons 
per elementary cell is higher than the value obtained by adding the corresponding values for the 
and 
structures. The Curie temperature of the compounds has also been measured and is equal to (440 ± 5)°C.
per elementary cell is higher than the value obtained by adding the corresponding values for the and structures. The Curie temperature of the compounds has also been measured and is equal to (440 ± 5)°C.Keywords :
Magnesium ferrites; Magnetization processes; Curve fitting; Hafnium; Iron; Lattices; Magnetic field measurement; Magnetic resonance; Nuclear measurements; Saturation magnetization; Temperature distribution; Temperature measurement;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1970.1066723
Filename :
1066723
Link To Document :
