Essays about: "Ferromagnetic materials"

Showing result 11 - 15 of 17 essays containing the words Ferromagnetic materials.

1. 11. A Comparison of Three Time-stepping Methods for the LLG Equation in Dynamic Micromagnetics

   University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

   Author : Simon Wredh; Anton Kroner; Tomas Berg; [2017]
   Keywords : LLG equation; Micromagnetism; Implicit midpoint; Midpoint extrapolation; Projection method;

   Abstract : Micromagnetism is the study of magnetic materials on the microscopic length scale (of nano to micrometers), this scale does not take quantum mechanical effects into account, but is small enough to neglect certain macroscopic effects of magnetism in a material. The Landau-Lifshitz-Gilbert (LLG) equation is used within micromagnetism to determine the time evolution of the magnetisation vector field in a ferromagnetic solid. READ MORE

3. 12. Microstructure and Magnetic Properties for Mn-Al based Permanent Magnet Materials

   University essay from Uppsala universitet/Fasta tillståndets fysik

   Author : Axel Nyberg; [2017]
   Keywords : ;

   Abstract : Manganese-Aluminium is an alloy with attractive ferromagnetic propertieswhenL10-structured ( -phase). If sucient permanent magnetic propertiescan be achieved at a low cost, it has potential to be a new permanentmagnet material on the market. READ MORE

4. 13. Electrical Properties of planar Metal-GdN-Metal junctions for Spintronic Applications

   University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

   Author : Felicia Ullstad; [2015]
   Keywords : nitride; gadolinium; spintronic; rare earth nitride; ferromagnetism; ferromagnetic; Semiconductor; Physics and Astronomy;

   Abstract : In this thesis the properties of planar metal-gadolinium nitride-metal junctions have been studied with the aim of establishing ohmic and Schottky contacts to thin polycrystalline films of n-type gadolinium nitride (GdN). GdN is an intrinsic ferromagnetic semiconductor of the rare earth nitride series. READ MORE

5. 14. Simulation, design and experimental validation of a passive magnetic damper for ultra-fast actuators

   University essay from KTH/Elektroteknisk teori och konstruktion

   Author : Chen Chen; [2014]
   Keywords : Damping; Thomson actuator; eddy currents; magnets; ferromagnetic materials;

   Abstract : A contact system driven by a high energetic Thomson actuator requires to be decelerated from full speed down to zero. The forces originated from the interaction between a stationary copper tube and a moving array of magnets combined with plastic or ferromagnetic material are used to generate eddy-current damping. READ MORE

6. 15. Domain wall propagation in nanometric layers of (Ga,Mn)(As,P)

   University essay from KTH/Materialvetenskap

   Author : Syed Asad Hussain; [2011]
   Keywords : Domain Wall; Longitudinal Kerr Effect; Ga; Mn As; P ;

   Abstract : Domain wall dynamics is the one of the most interesting topics in the field of Spintronics because of its potential applications in the development of memory devices. These studies of dynamics are particularly focused on dilute magnetic semiconductors (DMS) or ferromagnetic semiconductors, which are believed to be one of the future materials for Spintronics devices. READ MORE