Containing Magnetic Chains

Blue arrows show the orientation of the local magnetic moments in the ground state on Dy and Cu ions, (b) A comparison between measured (empty squares) and calculated 

Theoretical description of molecular magnets has a history of several decades. The most investigated systems in the past were isotropic or weakly anisotropic magnetic molecules, for which the phenomenological modelling of their magnetic 

Wybourne, B.G. (1965) Spectroscopic Properties of Rare Earth Ions, Interscience, New York. 

(2010) ORCA - An Ab Initio, Density Functional and Semiempiri-cal Program Package, Version 2.9.0., Universitat Bonn, Bonn. 

Schutz, M. et al. (2009) MOL-PRO, Version 2009.1, A Package of ab Initio Programs, Universitat Stuttgart, Stuttgart, http //www.molpro.net (accessed 09 September 2014). 

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Solid-state sulfide compounds MMo2S4 (M = V, Cr, Fe, Co) contain infinite chains of Mo4S6 clusters with intracluster Mo-Mo distances (2.756-2.989 A) and intercluster distance (2.960 A) for the cobalt derivative (112). As the valence of M is +2, judging from magnetic measurements, and the average oxidation state of molybdenum +3, the CVE for M2Mo4S8 is 12. This agrees with five intracluster and one intercluster... 

It should be mentioned that several copper oxide compounds are described by this model. These compounds contain CuO chains and Cu — O — Cu angle 6 is near 90° [7]. In this case the usual antiferromagnetic super-exchange of two nearest-neighbor magnetic Cu ions is suppressed and the exchange integral J12 is... 

Figure 6.186(a) Hydraulic cylinder with integrated piston stroke sensor. The stroke sensor fixed at the cylinder bottom, a tube made of stainless steel, contains a chain of resistors and, connected to these, an adequate number of Reed contacts activated by a piston-integrated annular-shaped permanent magnet. A magnetically activated Reed contact works like the tap of a potentiometer. 

The synthesis of core-shell magnetic nanoparticles from polyacrylic acid (PAA) graft copolymers containing side chains of PEO and PPO (Fig. 5) was demonstrated by Hatton et al. [102]. Using a mixture of the polymers at a temperature of 180°C, amine-terminated PEO and PPO were coupled onto the PAA via amidation. Super-paramagnetic polymer-coated nanoparticles were synthesized by the hydrolysis and condensation of Fe(II) and Fe(III) chloride salts in the presence of PPO- or PEO-modified PAA copolymers. The extraction of organic compounds from aqueous media towards the copolymer shell of hydrophobic PPO segments can be applied in the field of water purification. 

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