Mössbauer spectroscopy, superparamagnetism and ferrofluids
Fuente:
Redalyc
Guardado en:
| Autor principal: | |
|---|---|
| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Sociedade Brasileira de Física
2001
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1876470485389148160 |
|---|---|
| author | H.-D. Pfannes |
| author_facet | H.-D. Pfannes |
| contents | Mössbauer spectroscopy, superparamagnetism and ferrofluids H.-D. Pfannes J. H. Dias Filho R. Magalhães-Paniago J. L. López R. Paniago Física, Astronomía y Matemáticas Some fundamentals of Mössbauer spectroscopy and of fluctuating magnetic hyperfine interactions are reviewed. An expression for calculation of spin-phonon interaction transition probabilities on the ground of a Debye model is given. Basic ideas of superparamagnetism and classical results for low-temperature relaxation rates are presented. A theory of superparamagnetism based on spin-phonon interaction is introduced. It is shown how to calculate from this Mössbauer spectra taking all spin-levels into account. Experimental spectra of ferrofluids are compared with simulated spectra and found in good accordance. 2001 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413502011 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3 Vol.31 |
| format | Artículo científico |
| id | redalyc_46413502011 |
| institution | Redalyc |
| language | en |
| publishDate | 2001 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Mössbauer spectroscopy, superparamagnetism and ferrofluids H.-D. Pfannes Física, Astronomía y Matemáticas Mössbauer spectroscopy, superparamagnetism and ferrofluids H.-D. Pfannes J. H. Dias Filho R. Magalhães-Paniago J. L. López R. Paniago Física, Astronomía y Matemáticas Some fundamentals of Mössbauer spectroscopy and of fluctuating magnetic hyperfine interactions are reviewed. An expression for calculation of spin-phonon interaction transition probabilities on the ground of a Debye model is given. Basic ideas of superparamagnetism and classical results for low-temperature relaxation rates are presented. A theory of superparamagnetism based on spin-phonon interaction is introduced. It is shown how to calculate from this Mössbauer spectra taking all spin-levels into account. Experimental spectra of ferrofluids are compared with simulated spectra and found in good accordance. 2001 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413502011 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3 Vol.31 |
| title | Mössbauer spectroscopy, superparamagnetism and ferrofluids |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46413502011 |