Magnetism and Magneto-Optics of MnBi Nano-Particles

Thin MnBi films have been grown by molecular beam-epitaxy technique in combination with an alloying process. The formation of MnBi is driven by an enhanced intermixing due to diffusion close to the eutectic temperature where Bi becomes liquid. The growth process of MnBi was investigated in detail by...

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Veröffentlicht in:	Journal of the Magnetics Society of Japan 2001, Vol.25(3_2), pp.263-266
Hauptverfasser:	Menzel, D., Borgschulte, A., Broschwitz, M., Carsteanu, A. -M., Schoenes, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	magnetic properties magneto-optical medium manganese bismuth molecular beam epitaxy nano-particles
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Zusammenfassung:	Thin MnBi films have been grown by molecular beam-epitaxy technique in combination with an alloying process. The formation of MnBi is driven by an enhanced intermixing due to diffusion close to the eutectic temperature where Bi becomes liquid. The growth process of MnBi was investigated in detail by preparing a wedge-shaped thin film. Highly c-axis oriented nano-particles of MnBi are formed in a Bi matrix. The particles show two magnetic phases with magnetic moments of 744 kA/m and 113 kA/m and coercivities of 20 kOe and 7 kOe, respectively. They have a large magnetic energy product of 171 kJ/m3. The magneto-optical Kerr rotation in the visible spectral range is determined.
ISSN:	0285-0192 1880-4004
DOI:	10.3379/jmsjmag.25.263