Nota de FísicaPublicado
Mössbauer Spectroscopy, X-Ray Diffraction and Magnetic Measurements of Iron-Nickel Ultrafine Particles
R. B. Scorzelli; E. Galvão da Silva; C. Kaito; Y. Saito; M. MacElfresh; M. Elmassalami
1993
Dados da publicação
- Autores
- R. B. Scorzelli; E. Galvão da Silva; C. Kaito; Y. Saito; M. MacElfresh; M. Elmassalami
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 1993
- Descrição
- ron-nickel ultrafine particles with a composition in the Invar region <math>(38% - 50% Ni)\,\!</math> were prepared by the gas-evaporation-coalcscencc technique. The chemical composition was checked by electronprobe microanalysis while X-ray diffraction Rietveld refinement was used to characterize the structure as well as to estimate the particle size. The temperature and field dependence of the magnetization M (B,T) was measured for <math> 0 \le B</math> <math>\le 25 </math> <math>kOe\,\!</math> in the temperature range <math> 4.2 K \le T \le 400 </math> <math>K \,\!</math>. Transmission Mössbauer spectra were taken at room temperature and at liquid helium temperature. The results obtained show that the predominant phase is a disordered Ni-rich alloy.
- Ano
- 1993
- Número
- CBPF-NF-067/93
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não