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This concise book presents the basic concepts of magnetism and magnetic properties pertinent to permanent magnetic materials. Emphasis is placed on hexaferrite materials for permanent magnet applications, with M-type ferrites as the focal point. The relatively high metallicity of magnetic materials for practical applications imposes limitations for their efficient use. Accordingly, magnetic oxides with ferromagnetic properties emerged as the most widely used magnetic materials for practical applications, owing to their characteristic high resistivity and low eddy current losses, chemical stability, simplicity of production in mass quantities, and other favorable characteristics. An important class of these oxides is the class of hexagonal ferrites developed in the early 1950’s, which dominated the world market of permanent magnet applications since the end of the 1980’s. Among these ferrites, the magnetoplumbite (M-type) hexaferrite, is produced nowadays in large quantities at very competitive low prices, thus providing the permanent magnet market with probably the most cost-effective magnetic material.
International research scientists and engineers from academia and industry present details of the most recent investigations on industrially related topics and projects using Mössbauer Spectroscopy as a primary analytical technique. Papers cover a broad range of topics including corrosion, catalysis, and environmental monitoring.
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Disordered nature of structural arrangement in amorphous and nanocrystalline alloys gives rise to advantageous soft magnetic properties in particular from a practical application viewpoint [1]. Especially nanocrystalline alloys attract a lot of scienti?c interest because, contrary to their amorphous counterparts, their magnetic parameters do not substantially deteriorate at elevated temperatures during the process of their practical exploitation. To bene?t from their unique magnetic pr- erties, the mechanism of crystallization should be known. Here, we present the study of structural transformation of NANOPERM-type alloys by the help of Mössbauer spectrometry, conventional X-ray diffraction...
There is a growing interest in applying the UN's sustainable development goals to a variety of sectors. One can use certain principles of green chemistry in the emerging fields of nanoscience and nanotechnology. The green chemistry approach focuses on the creation of nanodimensional materials that have a low environmental impact, are cost-effective, and have no negative consequences on the environment. This book aims to summarise the different alternative green chemical routes. Furthermore, the book describes the use of nano-dimensional materials for sustainable energy generation and environmental remediation applications.
All Faces but Mine gathers selected poems from the acclaimed Palestinian poet Samih Al-Qasim (1934–2014). A contemporary of Mahmoud Darwish, Al-Qasim was a celebrated resistance poet whose passionate call for independence inspired a generation of poets. In this award-winning volume, poems are drawn from fourteen of the poet’s collections published over the last twenty years in addition to some of his final works. Lu’lu’a’s fluid translation captures both Al-Qasim’s innovative style and the emotional tenor of his poetry.
The book focuses on the relevant basic concepts of Magnetic oxides, as well as on synthesis routes and important applications of spinel ferrites, hexaferrites and magnetic oxide nanomaterials. Keywords: Magnetic Oxides, Spinel Ferrites, Hexaferrites, Magnetoelectric Ceramic Composites, Soft Ferrites, Nano-Size Spinel Ferrites, Magnetic Nanoparticles, Device Miniaturization.