Nanostructured Magnets with

Keywords Spark Plasma Sintering under magnetic field magnetic nanowires magnetic coercivity nanostructured magnets with tunable properties. 

The pyrolysis of PESs within the channels of the mesoporous silica MCM-41 and the creation of nanostructured magnetic ceramic nanocomposite materials has been achieved. In addition, use of a sacrificial porous alumina yields organometallic and magnetic ceramic nanofibers. Hyperbranched PFSs have also been synthesized and pyrolysis of these interesting materials has been found to lead to superparamagnetic ceramics. Furthermore, pyrolysis of PFSs with pendant Co clusters yields ceramics containing hybrid Fe/Co nanoparticles. ... 

Part 5 covers special structures such as liquid crystals, solid surfaces and mesoscopic and nanostructured materials. The chapter on liquid crystals covers physical properties of the most common liquid crystalline substances as well as some liquid crystalline mixtures. Data compiled in the chapter on solid surfaces refer to atomically clean and well characterized surfaces. The values reported are mainly averages from different authors where reference to the original papers is made. In the chapter on nanostructured materials emphasis is placed on size and confinement effects. The properties associated with electronic confinement are addressed and particular attention is drawn to semiconductor-doped matrices. The two main applications of nanostructured magnetic materials, spintronics and ultrahigh-density data storage media, are also treated. 

FIGURE 18.2 (a) Magnetic field-controlled reversible assembling of Au-coated magnetic nanoparticles and their use as a nanostructured electrode with the enhanced ability of electrochemical oxidation of ferrocene monocarboxylic acid coupled with glucose oxidation biocatalyzed by GOx. (b) CVs of ferrocene monocarboxylic acid (0.1 mM) obtained in the absence (i) and presence (ii) of the magnetic field. (Adapted with permission from Ref [63]. Copyright 2008, American Chemical Society.)... 

We demonstrated that the morphology of nanostructures, electrochemical, and photoelectrochemical properties in the electrodes modified with nanodusters of Qo can be controlled by applying a strong magnetic field. The present study provides useful information for designing novel nanodevices whose photofunctions can be controlled by a magnetic field. 

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