Magnetic and Magneto-optical Properties of Magnetic Oxide Thin Films PDF Download
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Author: Qi Feng
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Qi Feng
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Ying Bo Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages : 240
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Author: Joe Miller
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Category :
Languages : en
Pages :
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Author: Wala Dizayee
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Category :
Languages : en
Pages :
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Author: Gerald F. Dionne
Publisher: Springer Science & Business Media
ISBN: 1441900543
Category : Technology & Engineering
Languages : en
Pages : 474
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Magnetic Oxides offers a cohesive up-to-date introduction to magnetism in oxides. Emphasizing the physics and chemistry of local molecular interactions essential to the magnetic design of small structures and thin films, this volume provides a detailed view of the building blocks for new magnetic oxide materials already advancing research and development of nano-scale technologies. Clearly written in a well-organized structure, readers will find a detailed description of the properties of magnetic oxides through the prism of local interactions as an alternative to collective electron concepts that are more applicable to metals and semiconductors. Researchers will find Magnetic Oxides a valuable reference.
Author: Mohammed Alqahtani
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Languages : en
Pages :
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This thesis describes the growth, structural characterisation, magnetic and magneto-optics properties of lanthanum strontium manganite (LSMO), GdMnO3 and transition metal (TM)-doped In2O3 thin films grown under different conditions. The SrTiO3 has been chosen as a substrate because its structure is suitable to grow epitaxial LSMO and GdMnO3 films. However, the absorption of SrTiO3 above its band gap at about 3.26 eV is actually a limitation in this study. The LSMO films with 30% Sr, grown on both SrTiO3 and sapphire substrates, exhibit a high Curie temperature (Tc) of 340 K. The magnetic circular dichroism (MCD) intensity follows the magnetisation for LSMO on sapphire; however, the measurements on SrTiO3 were dominated by the birefringence and magneto-optical properties of the substrate. In the GdMnO3 thin films, there are two well-known features in the optical spectrum; the charge transfer transition between Mn d states at 2 eV and the band edge transition from the oxygen p band to d states at about 3 eV; these are observed in the MCD. This has been measured at remanence as well as in a magnetic field. The optical absorption at 3 eV is much stronger than at 2 eV, however, the MCD is considerably stronger at 2 eV. The MCD at 2 eV correlates well with the Mn spin ordering and it is very notable that the same structure appears in this spectrum, as is seen in LaMnO3. The results of the investigations of Co and Fe-doped In2O3 thin films show that TM ions in the films are TM2+ and substituted for In3+. The room temperature ferromagnetism observed in TM-doped In2O3 is due to the polarised electrons in localised donor states associated with oxygen vacancies. The formation of Fe3O4 nanoparticles in some Fe-doped films is due the fact that TM-doped In2O3 thin films are extremely sensitive to the growth method and processing condition. However, the origin of the magnetisation in these films is due to both the Fe-doped host matrix and also to the nanoparticles of Fe3O4.
Author: Kyongha Kang
Publisher:
ISBN:
Category : Materials science
Languages : en
Pages : 342
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Author: Ying Xiao
Publisher:
ISBN:
Category :
Languages : en
Pages : 194
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Author: James Tobin
Publisher:
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Category : Science
Languages : en
Pages : 664
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Proceedings of the March 1997 symposium, the central thrust being the relationship of magnetic properties and device performance to structure at the atomic, nanometer, and submicron length scales in these systems of reduced dimensionality. The 89 contributions cover the following topics: synthesis, processing, and characterization; novel applications and approaches for magnetism; nano-microstructure and magnetic properties; structure and properties--mixing, strain, and steps; nanoscale magnetic confinement, particles, and arrays; magnetization reversal and domain structure; synthesis and characterization; synchrotron radiation studies of magnetic materials; magneto-optical properties, effects, and measurements; magnetic phenomena; CMR and tunneling; and interlayer coupling and spin polarization. Annotation copyrighted by Book News, Inc., Portland, OR
Author: Mohammed Said Al Qahtani
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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