Interweaving spins with their environment: novel inorganic nanohybrids with controllable magnetic properties

2014 ◽  
Vol 43 (11) ◽  
pp. 4220-4232 ◽  
Author(s):  
Christian Cervetti ◽  
Eric Heintze ◽  
Lapo Bogani

We discuss the developments in the synthesis and characterization of magnetic nanohybrids made of molecular magnets and nanostructured materials.

2007 ◽  
Vol 12 (4) ◽  
pp. 574-582 ◽  
Author(s):  
Nelson Heriberto de Almeida Camargo ◽  
O. J. Bellini ◽  
Enori Gemelli ◽  
M. Tomiyama

Nanostructured materials have been largely studied in the last few years because they have a great potential to applications in different fields like physics, chemistry, biology, mechanic and medicine. Synthesis and characterization of nanostructured materials is a subject of great interest involving science, market, politicians, government and society. The nanostructured materials are in demand in biomedical area, mainly the bioceramics composed of calcium phosphates (Ca/P), which have an excellent biocompatibility and mineralogical characteristics similar to those of bones. The aim of this work was to optimize the method of powder synthesis of nanostructured calcium phosphate and of nanocomposites composed of calcium phosphate//SiO2n, containing 5, 10 and 15% (in volume) of nanometric silica (SiO2n). The results are expressed according to the method of synthesis, mineralogical and morphological characterization, and thermal behavior for the different compositions of the nanostructured powder synthesized.


2002 ◽  
Vol 17 (6) ◽  
pp. 1412-1418 ◽  
Author(s):  
I. Shao ◽  
P. M. Vereecken ◽  
C. L. Chien ◽  
P. C. Searson ◽  
R. C. Cammarata

Nanocomposite Ni/Al2O3 films were electrodeposited from a suspension of Al2O3 nanoparticles in aqueous nickel sulfamate solution. The volume fraction of particles incorporated increased with electrode rotation rate and decreased with deposition current density. The composition, microstructure, hardness, and magnetic properties of these nanocomposite films were characterized. The mechanical strengthening due to particle dispersion in the films was interpreted by considering an Orowan dislocation bowing mechanism. The coercivity of the films increased with increasing particle concentration in the film. The saturation magnetization showed a weak dependence on particle concentration.


2010 ◽  
Vol 22 (23) ◽  
pp. 6459-6466 ◽  
Author(s):  
Montserrat Colilla ◽  
Isabel Izquierdo-Barba ◽  
Sandra Sánchez-Salcedo ◽  
José L. G. Fierro ◽  
José L. Hueso ◽  
...  

2009 ◽  
Vol 87 (4) ◽  
pp. 533-538 ◽  
Author(s):  
Thomas J. O’Sullivan ◽  
Brandon Djukic ◽  
Paul A. Dube ◽  
Martin T. Lemaire

The synthesis and characterization of two new 2,2′-bipyridine ligands containing 3-ethynylthiophene and 3,3′-diethynyl-2,2′-bithiophene substituents is presented, along with the preparation, electronic, and magnetic properties of mono- and bimetallic cobalt-semiquinone valence tautomers containing these ligands.


2002 ◽  
Vol 718 ◽  
Author(s):  
Job Rijssenbeek ◽  
Sylvie Malo ◽  
Takashi Saito ◽  
Vincent Caignaert ◽  
Masaki Azuma ◽  
...  

AbstractPerovskite-like mixed metal ruthenates are of interest owing to their varied electronic and magnetic properties, which are heavily dependent on the ordering of the transition metals. We report the synthesis and structural characterization of the first 1:2 ordered perovskite ruthenate, Sr3CaRu2O9. The structure was determined from a combination of powder X-ray, electron and neutron diffraction data and is characterized by a 1:2 ordering of Ca2+ and Ru5+ over the sixcoordinate B-sites of the perovskite lattice. Sr3CaRu2O9 is the first example of this structure-type to include a majority metal with d electrons (Ru(V), d3). The relationship of this material to the K2NiF4-type Sr1.5Ca0.5RuO4 (i.e., Sr3CaRu2O8) highlights the dramatic effects of the ruthenium valence on the resultant structure. Remarkably, these two structures can be quantitatively interconverted by the appropriate choice of reaction temperature and atmosphere.


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