Search for dissertations about: "magnetic order"
Showing result 6 - 10 of 633 swedish dissertations containing the words magnetic order.
-
6. Magnetism of Semiconductors and Metallic Multilayers
Abstract : Magnetic properties of diluted magnetic semiconductors and magnetic metallic multilayers are investigated by SQUID magnetometry. By doping GaAs with magnetic Mn2+ ions under well defined growth conditions, one obtains a diluted magnetic semiconductor, (Ga,Mn)As, in which the randomly-distributed magnetic ions act as acceptor centers. READ MORE
-
7. The Structural Basis for Magnetic Order in New Manganese Compounds
Abstract : Materials with new or improved properties are crucial for technological development. To provide the foundation for future successful products, it is important to prepare and characterise new chemical compounds that could show unusual properties. READ MORE
-
8. Impedance of Soft Magnetic Multilayers : Application to GHz Thin Film Inductors
Abstract : A theoretical approach to calculating impedance of metallicmagnetic/conductor layered structures is developed. Thefrequency range considered extends to the ferromagneticresonance region of soft magnetic films (of the order of 1GHz). READ MORE
-
9. Magnetic Order in Artificial Structures
Abstract : The topic of this thesis is the investigation of the magnetic properties of artificially created magnetic structures. Applying different characterization techniques, ranging from direct imaging methods to reciprocal space techniques, the properties of lithographically patterned arrays of magnetic thin film and multilayer elements are investigated by exploring their magnetic state, extending from the atomic scale up to collective ordering phenomena of nano-magnetic elements. READ MORE
-
10. Phase transitions in magnetic metamaterials
Abstract : Magnetic metamaterials consisting of arrays of densely packed, two-dimensional nanoscale magnetic islands have degrees of freedom on two separate length scales: inside the islands, and among them. These degrees of freedom can be tuned by e.g. size, shape, island separation and lattice geometry. READ MORE