| dc.creator |
Pfannes H.-D. |
|
| dc.creator |
Dias Filho J. H. |
|
| dc.creator |
Magalhães-Paniago R. |
|
| dc.creator |
López J. L. |
|
| dc.creator |
Paniago R. |
|
| dc.date |
2001 |
|
| dc.date.accessioned |
2013-05-30T01:05:17Z |
|
| dc.date.available |
2013-05-30T01:05:17Z |
|
| dc.date.issued |
2013-05-30 |
|
| dc.identifier |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332001000300011 |
|
| dc.identifier |
http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=2001&volume=31&issue=3&spage=409 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/jspui/handle/123456789/3244 |
|
| dc.description |
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. |
|
| dc.publisher |
Sociedade Brasileira de Física |
|
| dc.source |
Brazilian Journal of Physics |
|
| dc.title |
Mössbauer spectroscopy, superparamagnetism and ferrofluids |
|