Dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x-ray microscopy:
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| Main Author: | |
|---|---|
| Format: | Thesis/Dissertation Book |
| Language: | English |
| Published: |
Göttingen
Cuvillier
2014
|
| Edition: | 1. Aufl. |
| Subjects: | |
| Links: | http://deposit.dnb.de/cgi-bin/dokserv?id=4707875&prov=M&dok_var=1&dok_ext=htm http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027461445&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| Physical Description: | II, 121 S. Ill., graph. Darst. |
| ISBN: | 9783954047376 |
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Record in the Search Index
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| adam_text | CONTENTS
1. INTRODUCTION 1
2. THEORETICAL BACKGROUND 5
2.1. MAGNETISM IN SOLIDS 5
2.2. MICROMAGNETIC MODEL AND LANDAU-LIFSHITZ EQUATION 7
2.2.1. EXCHANGE ENERGY 8
2.2.2. ZEEMAN ENERGY 9
2.2.3. DEMAGNETIZATION ENERGY 10
2.2.4. LANDAU-LIFSHITZ-GILBERT EQUATION AND THIELE EQUATION 12
2.2.5. DOMAIN WALLS AND MAGNETIC VORTICES 15
2.2.6. SPIN-TRANSFER TORQUE 16
2.3. X-RAY MAGNETIC CIRCULAR DICHROISM 17
3. METHODS 21
3.1. NUMERICAL SOLUTION OF ORDINARY DIFFERENTIAL EQUATIONS 22
3.2. MICROMAGNETIC SIMULATIONS 23
3.3. MULTIPHASICS SIMULATION WITH THE FINITE ELEMENT METHOD 28
3.4. SAMPLE PREPARATION 30
3.5. MAGNETIC FORCE MICROSCOPY 32
3.6. FERROMAGNETIC ABSORPTION SPECTROSCOPY 33
3.7. MAGNETIC TRANSMISSION X-RAY MICROSCOPY 36
3.7.1. STATIC IMAGING 37
3.7.2. TIME-RESOLVED IMAGING 38
3.8. GENERATION OF ROTATIONAL CURRENTS 43
4. RESULTS 47
4.1. LINEAR DYNAMICS OF MAGNETIC VORTICES AND ANTIVORTICES 47
4.1.1. THIELE EQUATION FOR VORTICES AND ANTIVORTICES 48
4.1.2. FREE GYRATION IN PARABOLIC POTENTIALS 50
4.1.3. ZEEMAN ENERGY IN EXTERNAL MAGNETIC FIELDS 55
4.1.4. DEFLECTION BY A STATIC MAGNETIC FIELD 57
4.1.5. DYNAMICS DRIVEN BY HOMOGENEOUS IN-PLANE FIELDS AND CURRENTS 59
4.1.6. SOLUTION FOR ROTATIONAL EXCITATION 62
4.1.7. TIME-RESOLVED X-RAY MICROSCOPY OF ROTATIONAL ANTIVORTEX
EXCITATION 71
4.2. NONLINEAR DYNAMICS AND POLARIZATION REVERSAL 76
4.2.1. EXPERIMENTAL INDICATIONS FOR NONLINEAR DYNAMICS 77
4.2.2. NONLINEAR EXTENSION OF THE THIELE MODEL 80
HTTP://D-NB.INFO/1053672055
CONTENTS
4.2.3. DEPENDENCE ON THE AMPLITUDE OF EXCITATION 83
4.2.4. DEPENDENCE ON THE BACKGROUND FIELD 92
5. CONCLUSION 97
A. ANALYTICAL CALCULATIONS 99
B. SUPPLEMENTARY RESULTS 103
C. PROCESS PARAMETERS 105
D. LIST OF PUBLICATIONS 107
D.L. PUBLICATIONS 109
D.2. AUTHOR CONTRIBUTIONS ILL
BIBLIOGRAPHY 113
|
| any_adam_object | 1 |
| author | Martens, Michael |
| author_facet | Martens, Michael |
| author_role | aut |
| author_sort | Martens, Michael |
| author_variant | m m mm |
| building | Verbundindex |
| bvnumber | BV042019739 |
| ctrlnum | (OCoLC)884575376 (DE-599)DNB1053672055 |
| dewey-full | 538.44 |
| dewey-hundreds | 500 - Natural sciences and mathematics |
| dewey-ones | 538 - Magnetism |
| dewey-raw | 538.44 |
| dewey-search | 538.44 |
| dewey-sort | 3538.44 |
| dewey-tens | 530 - Physics |
| discipline | Physik |
| edition | 1. Aufl. |
| format | Thesis Book |
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| illustrated | Illustrated |
| indexdate | 2024-12-20T17:00:15Z |
| institution | BVB |
| isbn | 9783954047376 |
| language | English |
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| oclc_num | 884575376 |
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| physical | II, 121 S. Ill., graph. Darst. |
| publishDate | 2014 |
| publishDateSearch | 2014 |
| publishDateSort | 2014 |
| publisher | Cuvillier |
| record_format | marc |
| spellingShingle | Martens, Michael Dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x-ray microscopy Ferromagnetikum (DE-588)4154129-7 gnd Flussschlauch (DE-588)4326682-4 gnd Magnetschicht (DE-588)4262876-3 gnd Röntgenmikroskopie (DE-588)4178315-3 gnd |
| subject_GND | (DE-588)4154129-7 (DE-588)4326682-4 (DE-588)4262876-3 (DE-588)4178315-3 (DE-588)4113937-9 |
| title | Dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x-ray microscopy |
| title_auth | Dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x-ray microscopy |
| title_exact_search | Dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x-ray microscopy |
| title_full | Dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x-ray microscopy vorgelegt von Michael Martens |
| title_fullStr | Dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x-ray microscopy vorgelegt von Michael Martens |
| title_full_unstemmed | Dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x-ray microscopy vorgelegt von Michael Martens |
| title_short | Dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x-ray microscopy |
| title_sort | dynamics of magnetic vortices and antivortices studied by ferromagnetic absorption spectroscopy and transmission x ray microscopy |
| topic | Ferromagnetikum (DE-588)4154129-7 gnd Flussschlauch (DE-588)4326682-4 gnd Magnetschicht (DE-588)4262876-3 gnd Röntgenmikroskopie (DE-588)4178315-3 gnd |
| topic_facet | Ferromagnetikum Flussschlauch Magnetschicht Röntgenmikroskopie Hochschulschrift |
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