Publication

Subcomponent Self-Assembly of Rare-Earth Single-Molecule Magnets

2013
Journal Articles

Abstract

A family of lanthanide complexes has been synthesized by the subcomponent self-assembly methodology. Molecular architectures, which were stable in solution and under ambient conditions, were designed by the in situ formation of ligands around lanthanide ion templates Magnetic studies indicated that, despite the low C-2 symmetry, 1 and 2 display single molecule magnet (SMM) behavior, with 1 exhibiting an effective energy barrier of the relaxation of the magnetization U-eff/k(B) = 50 K and the pre-exponential factor tau(o) = 6.80 X 10(-7) s. Step-like features in the hysteresis loops indicate the presence of quantum tunneling of the magnetization (QTM).

Official source

https://infoscience.epfl.ch/entities/publication/dacd58db-d9f3-4ad8-9de3-cd107c46e145

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2013
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dacd58db-d9f3-4ad8-9de3-cd107c46e145

About this result

Related concepts (32)

Magnet

A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets. A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door.

Lanthanide

The lanthanide (ˈlænθənaɪd) or lanthanoid (ˈlænθənɔɪd) series of chemical elements comprises the 15 metallic chemical elements with atomic numbers 57–71, from lanthanum through lutetium. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare-earth elements or rare-earth metals. The informal chemical symbol Ln is used in general discussions of lanthanide chemistry to refer to any lanthanide.

Ferrimagnetism

A ferrimagnetic material is a material that has populations of atoms with opposing magnetic moments, as in antiferromagnetism, but these moments are unequal in magnitude so a spontaneous magnetization remains. This can for example occur when the populations consist of different atoms or ions (such as Fe2+ and Fe3+). Like ferromagnetic substances, ferrimagnetic substances are attracted by magnets and can be magnetized to make permanent magnets.

Related publications (32)

Subcomponent Self-Assembly of Rare-Earth Single-Molecule Magnets

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