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Mossbauer and magnetization studies of amorphous NdFeB compositionally modulated thin films
Martínez Benjamin, Joan Josep; Moreu, M. A.; Ruiz, A.; Labarta, Amílcar; Obradors, Xavier; Briones Fernández-Pola, Fernando; Tejada Palacios, Javier
Universitat de Barcelona
Several NdFeB compositionally modulated thin films are studied by using both conversion electron Mossbauer spectra and SQUID (superconducting quantum-interference-device) magnetometry. Both the hyperfine fields and the easy magnetization magnitude are not correlated with the modulation characteristic length (lambda) while the magnetization perpendicular to the thin-film plane decreases as lambda increases. The spectra were recorded at room temperature being the gamma rays perpendicular to the substrate plane. The magnetization measurements were recorded by using a SHE SQUID magnetometer in applied magnetic fields up to 5.5 T and in the temperature range between 1.8 and 30 K.
04-05-2010
Efecte de Mössbauer
Propietats magnètiques
Aliatges
Substàncies amorfes
Pel·lícules fines
Interaccions hiperfines
Mossbauer effect
Magnetic properties
Alloys
Amorphous substances
Thin films
Hyperfine interactions
(c) IEEE, 1988
Artículo
IEEE
         

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