A {sup 57}Fe M{umlt o}ssbauer study of Gd{sub 2}Fe{sub 17{minus}{ital x}}Ga{sub {ital x}}C{sub 2} ({ital x}=0{minus}6)
- San Huan Research Laboratory, Chinese Academy of Sciences, Beijing 100080, Peoples Republic of (China)
- School of Physics, The University of New South Wales, Sydney NSW 2052 (Australia)
- Magnetism Laboratory Institute of Physics, Chinese Academy of Sciences, Beijing 100080, Peoples Republic of China ,Suharyana
- Magnetism Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, Peoples Republic of (China)
- School of Physics, The University of New South Wales, Sydney, NSW 2052 (Australia)
A {sup 57}Fe M{umlt o}ssbauer study of Gd{sub 2}Fe{sub 17{minus}{ital x}}Ga{sub {ital x}}C{sub 2} ({ital x}=0{minus}6) has been carried out in order to reveal the effects of Ga substitution on the Fe-sublattice magnetic properties. We have used a simplified fitting model which uses six broadened sextets in the theoretical fit to the spectra of Gd{sub 2}Fe{sub 17{minus}{ital x}}Ga{sub {ital x}}C{sub 2}. Our results suggest that the electronic factor plays an important role in determining the Fe magnetism in the substituted R{sub 2}Fe{sub 17-{ital x}}T{sub {ital x}} (T=Al,Ga,Si,Ti,...) compounds and their carbides. The average Fe magnetic moment in Gd{sub 2}Fe{sub 17{minus}{ital x}}Ga{sub {ital x}}C{sub 2} varies from 1.99{mu}{sub {ital B}} for {ital x}=0 to 0.94{mu}{sub {ital B}} for {ital x}=5 at room temperature. Therefore, the optimum substituent concentration would be 1{le}{ital x}{le}3 for the substituted R{sub 2}Fe{sub 17{minus}{ital x}}T{sub {ital x}} compounds as potential permanent magnet materials. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 280068
- Report Number(s):
- CONF-951101--
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 79; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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