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Growth and Room Temperature Spin Polarization of Half-metallic Epitaxial CrO2 and Fe3O4 Thin Films
Potential applications of systems based on half-metallic ferromagnets (HMFs) in magneto- and spinelectronics including spin injectors, magnetic field...
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Magnetic Interactions in Granular Paramagnetic-Ferromagnetic GaAs:Mn/MnAs Hybrids
The paramagnetic-ferromagnetic hybrid structure with a Curie temperature above room temperature formed by metallic MnAs clusters embedded in a...
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Exchange Interactions and Magnetic Percolation in Diluted Magnetic Semiconductors
We propose a theory that combines first-principles evaluations of interatomic exchange interactions with a classical Heisenberg model and Monte Carlo...
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Carrier Induced Ferromagnetism in Concentrated and Diluted Local-Moment Systems
For modeling the electronic and magnetic properties of concentrated and diluted magnetic semiconductors we use the s-f model (ferromagnetic...
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The Role of Interstitial Mn in GaAs-Based Dilute Magnetic Semiconductors
Ferromagnetic (Ga,Mn)As continues to be the subject of intense research due to the interesting physical properties and possible spin-electronics...
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An Origin of CMR: Competing Phases and Disorder-Induced Insulator-to-Metal Transition in Manganites
We theoretically explore the mechanism of the colossal magnetoresistance in manganese oxides by explicitly taking into account the phase competition...
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Domain-Wall Dynamics in Nanowiresand Nanostrips
In nanowires or nanostrips, the magnetic domain walls have structures that depend sensitively on the transverse sizes of these samples. These...
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Domain-Wall Dynamicsin Magnetic Logic Devices
Domain walls propagate very well through magnetic nanowires and have been used to demonstrate a logic scheme in which the two stable magnetization...
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Growth and Magnetotransport Properties of Thin Co2MnGe Layered Structures
Co2MnGe and other related Heusler alloys are investigated in the context of magnetotransport properties in multilayer (ML) structures. The most...
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Chemical Solution Depositionof Layer-Structured Ferroelectric Thin Films
Ferroelectric rare-earth-doped Bi4Ti3O12 thin films have been successfully prepared on Si-based substrates by using metallo-organic precursor...
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Relaxor Superlattices: Artificial Control of the Ordered–Disordered State of B-Site Ions in Perovskites
We have developed a new superlattice technique to artificially control the B-site ordering state. The technique has been applied to Ba(Zr0.2Ti0.8)O3,...
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Pb-Based Ferroelectric Thin Films Prepared by MOCVD
This Chapter focuses on the preparation and ferroelectric properties of Pb-based thin films and nanostructures. First, the growth behavior of...
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Rhombohedral PZT Thin Films Prepared by Sputtering
PZT thin films with a rhombohedral perovskite structure were successfully grown on (111) PLT/Pt/Ti/SiO2/Si and (111) Ir/SiO2/Si substrates. The...
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Correlation Between Domain Structures and Dielectric Properties in Single Crystals of Ferroelectric Solid Solutions
In the present chapter, the growth of single crystals in relaxor–PbTiO3 (PT) solid solution system by the flux method and the solution Bridgman...
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General Theory of Superexchange in Molecules
After recalling the basic physical backgrounds, we examine the concept of magnetic orbital, which is very useful for treating the mechanism of...
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Synthesis of Single-molecule Magnets Using Metallocyanates
Cyanometallate building blocks are inert and stable molecules that may act as ligands towards metal complexes. A stepwise approach allows...
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Preparation of Novel Materials Using SMMs
Magnetic hysteresis is considered a distinctive feature of bulk magnetic materials, where it arises from long-range ordering and irreversible...
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Single-Chain Magnets:Theoretical Approach and Experimental Systems
Recently, a new class of nano-magnets has been discovered and called single-chain magnets (SCMs) by analogy to the single-molecule magnets (SMMs)....
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Introduction
The phenomenon of spontaneous collective order of the magnetic moments in some solid materials (ferro-, ferri-, antiferromagnetism), still attracts...
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Critical Behaviour of Heisenberg Ferromagnets with Dipolar Interactions and Uniaxial Anisotropy
In any real magnetic system, weak anisotropic long-range dipole-dipole interactions are invariably present besides crystal-field interactions and...