Magnetism

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The present text book gives an comprehensive account of magnetism, spanning the historical development, the physical foundations and the continuing research underlying the field, one of the oldest yet still vibrant field of physics. It covers both the classical and quantum mechanical aspects of magnetism and novel experimental techniques. Perhaps uniquely, it also discusses spin transport and magnetization dynamics phenomena associated with atomically and spin engineered nano-structures against the backdrop of spintronics and magnetic storage and memory applications. The book is written for students on the late undergraduate and the graduate levels and should also serve as a state-of-the-art reference for scientists in academia and research laboratories. 

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Mechanical Characterization of One-Dimensional Nanomaterials: Using MEMS technology and in-situ SEM/TEM experimentations

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Novel materials and nanostructures with superior electro-mechanical properties are emerging in the development of novel devices. Engineering application of these materials requires accurate electro-mechanical characterization, which in turn requires development of novel experimental techniques. This book outlines the investigation of the mechanical and electrical properties of one- dimensional nanomaterials. One-dimensional nanomaterials such as carbon nanotubes (CNTs), ZnO and GaN nanowires were investigated using MEMS technology and in situ SEM/TEM experimentation. This nanoscale materials testing system (nMTS) allows the direct correlation of stress-strain state and defect nucleation and propagation. For CNTs, the fracture strengths of arc-discharge- grown multi-walled carbon nanotubes (MWCNTs) were measured using nMTs within a TEM. Single-shell failures were observed with a mean fracture strength in excess of 100 GPa, which exceeds prior observations by more than a factor of three. Using the same experiment, the Young¿s modulus and tensile strengths of ZnO and GaN NWs were measured.

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