Fabrication and thermal stability of arrays of Fe nanodots
Liu, Kai (University of California, San Diego. Department of Physics)
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física)
Leighton, C. (University of Minnesota. Department of Chemical Engineering and Materials Science)
Masuda, H. (Tōkyō Toritsu Daigaku. Department of Applied Chemistry)
Nishio, K. (Tōkyō Toritsu Daigaku. Department of Applied Chemistry)
Roshchin, I. V. (University of California, San Diego. Department of Physics)
Schuller, Ivan K. (University of California, San Diego. Department of Physics)
American Physical Society

Fecha:	2002
Resumen:	We have fabricated arrays of 60-nm-size magnetic Fe nanodots over a 1-cm2 -size area using nanoporous alumina membranes as shadow masks. The size and size distribution of the nanodots correlate very well with that of the membrane pores. By placing an antiferromagnetic FeF2 layer underneath the Fe nanodots, an exchange anisotropy can be introduced into the Fe/FeF2 system. We have observed an increase in the magnetic hysteresis loop squareness in biased nanodots, suggesting that exchange bias may be used as a tunable source of anisotropy to stabilize the magnetization in such nanodots.
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Derechos:	Tots els drets reservats.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Nanodots ; Magnetic anisotropy ; Nanofabrication ; Antiferromagnetism ; Exchange interactions ; Magnetic hysteresis ; Nanoporous materials ; Thermal stability
Publicado en:	Applied physics letters, Vol. 81, Num. 23 (November 2002) , p. 4434-4436, ISSN 1077-3118

DOI: 10.1063/1.1526458

4 p, 306.1 KB

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Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > Grupo de nanoingeniería de materiales, nanomagnetismo y nanomecánica (Gnm3)
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