Nano Archive

Ferromagnetism in Ge nanostructures

Liou, Y. and Su, P.W and Shen, Y.L (2007) Ferromagnetism in Ge nanostructures. Applied Physics Letters, 90 (18). p. 182508. ISSN 00036951

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Official URL: http://dx.doi.org/10.1063/1.2737372

Abstract

Room-temperature ferromagnetism was observed in Ge nanostructures deposited on polystyrene nanospheres. Various Ge layers (3, 5, 10, and 20 nm) were deposited on different nanospheres (20, 30, 50, and 100 nm in diameter). The magnetization in Ge nanostructures was influenced by both the thickness of Ge layers and the size of nanospheres. Maximum magnetization (360 emu/g) and magnetic moment (4.7µB/Ge) were observed in the sample with a 5 nm thick Ge layer on nanospheres with a diameter of 20 nm. The ferromagnetism in Ge nanostructures was attributed to both the quantum size effect and the junctions among nanostructures.

Item Type:Article
Uncontrolled Keywords:germanium, elemental semiconductors, magnetic semiconductors, ferromagnetic materials, magnetisation, magnetic moments, size effect
Subjects:Physical Science > Nanomagnetics
ID Code:39
Deposited By:Lesley Tobin
Deposited On:22 Oct 2008 15:22
Last Modified:22 Jan 2009 14:16

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