Nano-Crystalline and Thin Film Magnetic Oxides

The book contains the contributions presented at the NATO ARW on Ferrimagnetic Nano-crystalline and Thin Film Magnetooptical and Microwave Materials (short title: Nano-crystalline and Thin Film Magnetic Oxides) which took place in Sozopol, Bulgaria, Sept. 27 - Oct. 3, 1998. The program of the ARW was consistent with three main areas in the magnetic oxides for microwave and magnetooptical applications : thin films and nano-crystalline ferroxides; magnetic behaviour and applications of oxides with perovskite structures; and nano-sized materials and modeling. The development of planar devices for high-density magnetic and magneto optical recording and microwave integral technologies has led to a substantial growth of the scientific interest in nano-crystallline and thin film magnetic oxides, such as ferrites, manganates and cuprates. The Workshop organizers embarked on the ambitious task to attract the scientists' attention to key problems related to the nano-crystalline state of magnetic oxides and their magnetic, electrical, and optical behaviour. The knowldege of interactions between charge carriers, with phonons, the spin and dipole magnetic moments and the role of the microstructure and magnetic anisotropy is much theoretically studied for magnetic oxides. The workshop program touched not only upon the theoretical aspects, but on the technology and experiments as well. A review of nano-particle technology and future trends was presented. The possibilities of investigating and modeling the domain structure of the magnetic oxide films were demonstrated and discussed. Microwave and magnetooptical applications of ferroxides were also explored, including a discussion on new types of components with nano-size structure.

Zusammenfassung
Proceedings of the NATO Advanced Research Workshop on Ferrimagnetic Nano-crystalline and Thin Film Magnetooptical and Microwave Materials, Sozopol, Bulgaria, 27 September - 3 October, 1998

Inhalt
Original Spinel Ferrites for New Mass Storage Media.- Ferrite Films Synthesized from Aqueous Solution and Their Applications.- Magnetic Behaviour of Polycrystalline Magnetite Thin Films with Nano-Sized Crystallites.- Hexaferrite and Manganite Films Obtained by Injection-MOCVD Process.- Non-Linear Microwave and Magneto-Optical Properties of Ferrite Films.- Vortex Pinning and Dynamics in Perovskite Oxides: Thermal Magneto-Transport in the Mixed State.- Magnetoresistance at Interfaces in Submicrometric Manganese Perovskites Ceramics.- Colossal Magnetoresistance in Manganese Perovskite Films and Multilayers.- Strain and Magnetoresistance Anisotropy of Pr0.7Sr0.3MnO3 Ultrathin Films.- Magnetisation Processes in Magnetic Nanostructures.- Size and Interface Dependent Magnetic Properties of Encapsulated Metal Clusters.- Magnetic Metal Nanoparticles-Synthesis, Properties, Applications in Magnetic Hard Disks and Some of Their Quantum Size Effects.- Domain Models and the Hall Effect in Thin Magnetic Films.- Dielectric Properties and Applications of Strontium Titanate Thin Films for Tunable Electronics.- Fabrication, Structure and Properties of TL-Based HTS Thin Films.- TL-Based HTS Devices and Applications.- Investigation of Microwave Losses in HTSC Microstrip and Tunable Periodic Coplanar Line Resonators.- Thin Films of Oxide Ferrites Produced by Pulsed Laser Deposition.- Low Temperature Susceptibility Measurements on the Ultrafine Fe3O4 Powders.- Photo-Induced Effect on the Charge-Ordered State with Canted Antiferromagnetic Spin Order in Pr0.65Ca0.35MnO3.- Low-Field Magnetoresistance Hysteresis of Magnetron Sputtered La0.7Ca0.3MnO3 Thin Films.- An Experimental Study of Stainless Steel Rough Surface.- Time Series Analysis of Microwave Signals: Multifractal Aspects.- Approximate Self-Affinity and Autocovariance Function Models of Ballistic Deposits.- XPS Investigation of Oxidation State of CoNBH Nanoparticles.- Investigation of Device Low Frequency Noise in MW FET DRO.- Precision In-Situ Frequency Trimming Process of Surface Transverse Wave Resonators.- Deposition and Characterization of One- and Two-Sided YBCO Thin Films for Microwave Devices.- Evolution of Surface and Leaky Magnetopolaritons in Gyrotropic Semiconductors.- Optical Processes and ?(2) Susceptibility Dispersion of LBO for Storage Media and Tunable Frequency Oscillator.- Properties of C60 Compressed under High Pressure at High Temperature (HTPC60).- Morphology Formation in Silicon-based Thin Amorphous Films as Self-Organization Manifestation.- Vizualization of Magnetic Flux in Magnetic Materials and HighTemperature Superconductors Using the Faraday Effect in Ferrimagnetic Garnet Films (Invited paper).- In Situ Deposition of HTSC YBCO Thin Films by High Temperature Spray Pyrolysis.