Open AccessJournal Article
Room-temperature ferromagnetism in Ge1-xMnx nanowires
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TL;DR: In this article, an observation of room temperature ferromagnetism in Ge nanowires doped with Mn was reported, which can be understood by considering the influence of co-dopant nonmagnetic impurities and nanowire/membrane interfaces.
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Abstract: We report an observation of room temperature ferromagnetism in Ge nanowires doped with Mn. Highdensity arrays of Ge1−xMnx x=1% –5% nanowires with the smallest diameter of 35 nm have been synthesized within the pores of anodized aluminium oxide membranes using a supercritical fluid inclusion-phase technique. Structural analysis of the nanowires proved the existence of a highly crystalline germanium host lattice containing discrete manganese atoms. All of the nanowires studied displayed ferromagnetic properties at room temperature. Ferromagnetic ordering reaches a maximum at intermediate Mn concentrations. The magnetic properties of the nanowires can be understood by considering the influence of co-dopant nonmagnetic impurities and nanowire/membrane interfaces.
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Citations
•Journal Article
High Curie temperature ferromagnetism in self-organized GeMn nanocolumns.
TL;DR: A high-TC (>400K) ferromagnetic phase of (Ge,Mn) epitaxial layer of semiconductor nanostructures that is close to Ge2Mn, which corresponds to an unknown germanium-rich phase, and they have a uniaxially elongated diamond structure.
One-dimensional Si/Ge nanowires and their heterostructures for multifunctional applications-a review.
TL;DR: The control over various forms of energy and carrier transport through the unconstrained dimension makes Si and Ge nanowires a promising platform to manufacture advanced solid-state devices.
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Colloidal magnetic nanocrystals: synthesis, properties and applications
Doh C. Lee,Danielle K. Smith,Andrew T. Heitsch,Brian A. Korgel +3 more
- 15 Jun 2007
TL;DR: There has been a tremendous research effort in the past few years in colloidal magnetic nanocrystals as mentioned in this paper, which enable a wide variety of magnetic materials to be synthesized in nanocrystal form, including ferromagnetic transition metals, intermetallics and metal oxides.
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Template-free electrosynthesis of crystalline germanium nanowires from solid germanium oxide in molten CaCl2–NaCl
TL;DR: In this article, a one-step preparation of crystalline germanium nanowires (Ge-NWs) by direct electrochemical reduction of solid GeO 2 in molten CaCl 2 -NaCl at 600°C with a current efficiency of ~86% and an energy consumptions as low as 3.26kW −1
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Mn-doped Ge self-assembled quantum dots via dewetting of thin films
TL;DR: In this article, the dewetting phenomenon at solid state by UHV annealing at high temperature of an amorphous Ge:Mn (Mn: 40%) nanolayer deposed at very low temperature by high-precision Solid Source Molecular Beam Epitaxy on SiO 2 thin film.
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