Dynamic domains in strongly driven ferromagnetic films [Elektronische Ressource] / by Katherine Mayes

Institut F|R Angewandte Physik, Germany, © Volker Gerheim, Licht- Und Teilchenoptik, Tu Darmstadt

Description

Dynamic Domainsin Strongly Driven Ferromagnetic FilmsA dissertation accepted bythe Department of Physics ofDarmstadt University of Technologyfor the degree ofDoktor der Naturwissenschaften(Dr. rer. nat.)byKatherine Mayes, B.A., M.Sc.from DublinMain Supervisor: Prof. Dr. H. SauermannSecond Supervisor: Prof. Dr. B. DrosselDate of submission: 4th December 2002Date of examination: 27th January 2003Darmstadt 2002D17Contents1 Introduction 42 The Landau-Lifshitz Equation 82.1 Effective Magnetic Field . . . . . . . . . . . . . . . . . . . . . . . . 92.2 Rotating Reference Frame . . . . . . . . . . . . . . . . . . . . . . . 10I Numerical Simulation 123 Notes on Computation and Representation 134 Numerical Dynamic Domains 174.1 Homogeneous State . . . . . . . . . . . . . . . . . . . . . . . . . . . 174.2 Stripes and Bubbles . . . . . . . . . . . . . . . . . . . . . . . . . . . 184.3 Wall Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.4 Bistability and Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . 234.5 Nature of Critical Threshholds . . . . . . . . . . . . . . . . . . . . . 24II Analytical Investigation 275 Homogeneous Solution 285.1 Calculation of Homogeneous Solution . . . . . . . . . . . . . . . . . 285.2 Linear Stability Analysis . . . . . . . . . . . . . . . . . . . . . . . . 306 Domain Features far from the Wall 376.1 Magnetization far from the Wall . . . . . . . . . . . . . . . . . . . . 376.

Sujets

• Physik
• Astronomie

Informations

• Publié par: technischen_universitat_darmstadt
• Publié le: 01 janvier 2002
• Nombre de lectures: 80
• Langue: English

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