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

Date:	2002
Abstract:	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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Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Nanodots ; Magnetic anisotropy ; Nanofabrication ; Antiferromagnetism ; Exchange interactions ; Magnetic hysteresis ; Nanoporous materials ; Thermal stability
Published in:	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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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
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