Artificial tilted of spin structure of a cobalt thin film within a Co/VOx magnetic heterostructure

목차 (Table of Contents)

• List of Contents
• Abstract i
• List of contents ii
• List of figures iv
• I. Introduction 1
• IⅠ. Theoretical backgrounds 7
• 2.1 Exchange interaction 7
• 2.1.1 Heisenberg exchange interaction 7
• 2.1.2 Dzyaloshinskii-Moriya interaction 9
• 2.2 Magnetic anisotropy energy 13
• 2.2.1 Magneto-crystalline anisotropy 13
• 2.2.2 Shape magnetic anisotropy 17
• 2.2.3 Interfacial magnetic anisotropy 21
• 2.3 The other magnetic energies 24
• 2.3.1 Zeeman energy· 24
• 2.3.2 Landau-Lifshitz-Gilbert equation 25
• 2.4 Spin wave 30
• 2.4.1 Basic concept of spin wave 30
• 2.4.2 Mechanism of inelastic scattered light 33
• 2.5 Hall effect 35
• IIⅠ. Fabrication process and Experiment tools 39
• 3.1 Magnetic multilayer deposition 39
• 3.2 Experimental tools 42
• 3.2.1 Magneto-optical Kerr effect 42
• 3.2.2 SQUID-VSM measurements 45
• 3.2.3 Physical properties measurement system and transport measure 46
• 3.2.4 Transmission Electron Microscope-Electron Energy Loss Spectroscopy 47
• ⅠV. Result and discussion 52
• Ferromagnetism of pure vanadium oxide and their magnetic properties 53
• 4.1 Overview 53
• 4.2 Introduction 54
• 4.3 Experimental results and discussion 56
• 4.4 Summary 75
• V. Result and discussion 77
• Unconventional energy occurring in vanadium oxide and the ferromagnetic layer 78
• 5.1 Overview 78
• 5.2 Introduction 79
• 5.3 Experimental result and discussion 81
• 5.4 Summary 90
• VI. References 92