Magnetic EXAFS: an experimental and theoretical investigation
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Aachen
Shaker
2000
|
| Schriftenreihe: | Berichte aus der Physik
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | VIII, 142 S. graph. Darst. : 21 cm |
| ISBN: | 3826570464 |
Internformat
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Datensatz im Suchindex
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| adam_text | BERICHTE AUS DER PHYSIK DIRK AHLERS MAGNETIC EXAFS AN EXPERIMENTAL AND
THEORETICAL INVESTIGATION SHAKER VERLAG AACHEN 2000 CONTENTS V CONTENTS
ABSTRACT I ACKNOWLEDGMENTS - DANKSAGUNG III CONTENTS V 1 INTRODUCTION 1
1.1 EXPERIMENTAL METHODS 3 1.2 X-RAY MAGNETIC CIRCULAR DICHROISM 6 1.3
AIM OF THIS WORK 8 2 THEORY OF SPIN-DEPENDENT ABSORPTION AND MAGNETIC
EXAFS 11 2.1 PHOTO EFFECT AND FERMI S GOLDEN RULE 11 2.2 A SIMPLE
DESCRIPTION OF EXAFS 13 2.3 A FULLY RELATIVISTS FORMULATION OF MEXAFS 16
2.3.1 THE ABSORPTION COEFFICIENT 16 2.3.2 CALCULATION OF * BY MEANS OF
BRILLOUIN ZONE INTEGRATION .... 19 2.3.3 CALCULATION OF R BY MEANS OF
MATRIX INVERSION 20 2.3.4 CALCULATION OF * BY MEANS OF SCATTERING PATH
EXPANSION .... 22 2.3.5 SUMMARY OF THE THEORETICAL DESCRIPTION 24 2.4
ABSORPTION OF CIRCULARLY POLARIZED LIGHT 25 2.5 A PHENOMENOLOGICAL MODEL
OF MEXAFS 29 VI CONTENTS 3 EXPERIMENTAL DETAILS 33 3.1 SYNCHROTRON
RADIATION 33 3.2 THE EXPERIMENTS 34 3.2.1 MEASUREMENTS IN THE HARD X-RAY
REGIME 35 3.2.2 MEASUREMENTS IN THE SOFT X-RAY REGIME 37 4 DATA
EVALUATION 41 4.1 DETERMINING THE EDGE ABSORPTION 41 4.2 ENERGY
CALIBRATION 43 4.3 ABSORPTION PROFILE AND NORMALIZATION 44 4.4 THE
MAGNETIC BACKGROUND 45 4.5 THE MAGNETIC MULTI-ELECTRON EXCITATION 46 4.6
THE FOURIER TRANSFORM 47 4.7 THE REVERSE FOURIER TRANSFORM (FOURIER
FILTERING) 49 4.8 THE DIFFERENCE METHOD 50 5 RESULTS AND DISCUSSION 53
5.1 MOTIVATION AND SAMPLE SELECTION 53 5.2 ORBITAL INFLUENCE AND
CHEMICAL SURROUNDING 55 5.2.1 THE METALS GD, TB, AND HO 55 5.2.2 THE HO
COMPOUNDS HOFE 2 AND HO3FE 5 0 12 59 5.2.3 THE SPIN-MOMENT CORRELATION
64 5.2.4 THE DIFFERENCE METHOD 68 5.2.5 APPLICATION OF THE
PHENOMENOLOGICAL MODEL 70 5.2.6 THE MAGNETIC BACKGROUND 73 5.2.7 THE
MULTI-ELECTRON EXCITATIONS 75 5.3 SPEXAFS AND NONMAGNETIC NEIGHBORS 77
5.3.1 THE IONIC CRYSTALS EUO, EUS, AND EU 3 FE 5 0I 2 77 5.3.2 FORWARD
SCATTERING AND FOCUSING EFFECT 84 CONTENTS VII 5.3.3 THE OXYGEN * EDGE
IN EUO AND EU 3 FE 5 0 12 85 5.3.4 COMPARISON WITH THEORY 87 5.3.5 FINAL
REMARKS 91 5.4 APPLICATION OF THEORY 92 5.4.1 THE COMPOUND PTFE 3 92
5.4.2 THE 4/ METAL GD 96 5.4.3 THE TRANSITION METALS FE, CO, AND NI 99
5.4.4 COMPARISON WITH THE PHENOMENOLOGICAL MODEL 104 5.5 THE SUM-RULES
FOR MAGNETIC EXAFS 108 5.5.1 THE SUM-RULES AT THE LI AND L 3 EDGES 108
5.5.2 THE SUM-RULES AT * AND L EDGES 115 6 SUMMARY 119 A THE DIFFERENCE
METHOD 123 LIST OF FIGURES 125 LIST OF TABLES 129 BIBLIOGRAPHY 131 INDEX
137 CURRICULUM VITAE - LEBENSLAUF 141
|
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| illustrated | Illustrated |
| indexdate | 2024-07-09T18:38:28Z |
| institution | BVB |
| isbn | 3826570464 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-008900115 |
| oclc_num | 76136266 |
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| physical | VIII, 142 S. graph. Darst. : 21 cm |
| publishDate | 2000 |
| publishDateSearch | 2000 |
| publishDateSort | 2000 |
| publisher | Shaker |
| record_format | marc |
| series2 | Berichte aus der Physik |
| spelling | Ahlers, Dirk Verfasser aut Magnetic EXAFS an experimental and theoretical investigation Dirk Ahlers Aachen Shaker 2000 VIII, 142 S. graph. Darst. : 21 cm txt rdacontent n rdamedia nc rdacarrier Berichte aus der Physik Zugl.: Würzburg, Univ., Diss., 1999 Seltenerdmetall (DE-588)4132099-2 gnd rswk-swf Übergangsmetall (DE-588)4078494-0 gnd rswk-swf EXAFS (DE-588)4015942-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content EXAFS (DE-588)4015942-5 s Übergangsmetall (DE-588)4078494-0 s Seltenerdmetall (DE-588)4132099-2 s DE-604 GBV Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008900115&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Ahlers, Dirk Magnetic EXAFS an experimental and theoretical investigation Seltenerdmetall (DE-588)4132099-2 gnd Übergangsmetall (DE-588)4078494-0 gnd EXAFS (DE-588)4015942-5 gnd |
| subject_GND | (DE-588)4132099-2 (DE-588)4078494-0 (DE-588)4015942-5 (DE-588)4113937-9 |
| title | Magnetic EXAFS an experimental and theoretical investigation |
| title_auth | Magnetic EXAFS an experimental and theoretical investigation |
| title_exact_search | Magnetic EXAFS an experimental and theoretical investigation |
| title_full | Magnetic EXAFS an experimental and theoretical investigation Dirk Ahlers |
| title_fullStr | Magnetic EXAFS an experimental and theoretical investigation Dirk Ahlers |
| title_full_unstemmed | Magnetic EXAFS an experimental and theoretical investigation Dirk Ahlers |
| title_short | Magnetic EXAFS |
| title_sort | magnetic exafs an experimental and theoretical investigation |
| title_sub | an experimental and theoretical investigation |
| topic | Seltenerdmetall (DE-588)4132099-2 gnd Übergangsmetall (DE-588)4078494-0 gnd EXAFS (DE-588)4015942-5 gnd |
| topic_facet | Seltenerdmetall Übergangsmetall EXAFS Hochschulschrift |
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