Skip to Main content Skip to Navigation
Theses

Synthèse et caractérisations de matériaux moléculaires magnétiques

Abstract : This dissertation describes the syntheses of 3d-4f-metal complexes starting from preformed compounds of Mn, Fe and Co, lanthanide salts and organic ligands and also the investigation of their structures and properties. 41 new polynuclear heterometallic metal complexes were synthesised in the course of this work with different interesting properties. The structures of all obtained compounds have been confirmed using X-ray diffraction. The magnetic properties of 22 complexes were studied, of which four show frequency dependent out-of-phase signals as expected for SMMs. The catalytic activity of calcinated {Mn4Dy6Li2} was investigated and proved effective for the oxidation of CO. It was established, that the use of precursors leads to new families of compounds. Moreover the study of isostructural compounds across the lanthanide series showed 1) that the incorporation of 4f ions introduces magnetic anisotropy and 2) DyIII is usually the best candidate for targeting 3d-4f- SMMs.
Document type :
Theses
Complete list of metadatas

Cited literature [5 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00755137
Contributor : Nadine Laffargue <>
Submitted on : Tuesday, November 20, 2012 - 3:18:06 PM
Last modification on : Thursday, January 11, 2018 - 6:14:59 AM
Long-term archiving on: : Thursday, February 21, 2013 - 12:20:25 PM

Identifiers

  • HAL Id : tel-00755137, version 1

Collections

Citation

Jürgen Feuersenger. Synthèse et caractérisations de matériaux moléculaires magnétiques. Matériaux. Université Sciences et Technologies - Bordeaux I, 2010. Français. ⟨tel-00755137⟩

Share

Metrics

Record views

276

Files downloads

525