Magnetic order and coupling phenomena: a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
Cham [u.a.]
Springer
2014
|
| Series: | Springer theses
|
| Subjects: | |
| Online Access: | Inhaltsverzeichnis Klappentext |
| Physical Description: | XXI, 121 S. Ill., graph. Darst. |
| ISBN: | 9783319071053 |
Staff View
MARC
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| 100 | 1 | |a Schubert, Christian |d 1984- |e Verfasser |0 (DE-588)1054553904 |4 aut | |
| 245 | 1 | 0 | |a Magnetic order and coupling phenomena |b a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures |c Christian Schubert |
| 264 | 1 | |a Cham [u.a.] |b Springer |c 2014 | |
| 300 | |a XXI, 121 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 0 | |a Springer theses | |
| 502 | |a Zugl.: Chemnitz, Technische Univ., Diss., [2013] | ||
| 650 | 4 | |a Magnetism | |
| 650 | 4 | |a Materials | |
| 650 | 4 | |a Physics | |
| 655 | 7 | |0 (DE-588)4113937-9 |a Hochschulschrift |2 gnd-content | |
| 776 | 0 | 8 | |i Erscheint auch als |n Online-Ausgabe |z 978-3-319-07106-0 |
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| 856 | 4 | 2 | |m Digitalisierung UB Regensburg - ADAM Catalogue Enrichment |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027524842&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA |3 Klappentext |
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Record in the Search Index
| _version_ | 1804152536638160896 |
|---|---|
| adam_text | Contents
1
Introduction
........................................ 1
References
......................................... 2
2
Thin Amorphous Fe-Tb Alloy Films
...................... 5
2.1
Phase Diagram
................................... 5
2.2
Intrinsic Magnetic Structure: Magnetic Anisotropy,
Exchange Coupling, and
Speri
magnetism
................ 7
2.3
Magnetic Properties with Regard to Alloy Composition,
Film Thickness, and Temperature
...................... 9
2.4
Magnetostriction
................................. 13
2.5
Fe-Tb Films for Application
.........................
І4
References
......................................... 16
3
Со
/Pt
Multilayers
.................................... 19
3.1
Origin of Magnetic Anisotropy
....................... 19
3.2
Magnetic Properties Depending on the Structure
of the Multilayers
................................. 21
References
......................................... 23
4
Exchange-Bias Effect in F/FI Rare-Earth-Transition-Metal
Heterostructures
..................................... 25
References
......................................... 28
5
Experimental Techniques
.............................. 31
5.1
Film Deposition Using Magnetron (Co-)Sputtering
from Element Targets
.............................. 31
5.2
The Fabrication of Nanodot Arrays by Pre-patterning
........ 34
5.3
Structural Characterization Techniques
.................. 35
5.3.1
Estimation of Film Thickness by X-Ray
Reflectometry
.............................. 35
5.3.2
Stoichometry Measurements by Rutherford
Backscattering Spectrometry
.................... 36
53.3
Determining Crystal Structures by X-Ray
Diffraction
................................ 37
ХШ
xiv
Contents
5.3.4
Film Morphology, Crystal Structure, and Topography
Investigations by Electron Microscopy
............. 39
5.3.5
Surface Imaging by Atomic Force Microscopy
....... 40
5.4
Investigation of Magnetic Properties
.................... 40
5.4.1
Magnetometry
by Magneto-Optical Kerr Effect
Measurements
.............................. 40
5.4.2
Х
-Ray Magnetic Circular Dichroism: An Element
Specific Probe for Magnetism
................... 42
5.4.3
Integral Magnetic Measurements Using
a Superconducting Quantum Interference Device
...... 45
5.4.4
Stray Field Imaging with Magnetic
Force Microscopy
........................... 48
References
......................................... 49
6
Magnetic Order in Thin Feioo-xTbx Films: A Temperature
and Stoichiometry Dependent Study
...................... 51
6.1
Morphology and Structural Properties
................... 51
6.2
Speri
magnetism and Its Properties at Room Temperature
..... 54
6.2.1
Net Saturation Magnetization, Coercivity,
and Magnetic Anisotropy with Respect to the Tb
Content of the Fe-Tb Alloy Film
................. 54
6.2.2
Magnetization Reversal in Fe—Tb Films Dominated
by the Fe
Sublattice
.......................... 56
6.2.3
Magnetization Reversal in Fe—Tb Films Dominated
by the Tb
Sublattice
.......................... 57
6.3
The Influence of Temperature on the Sperimagnetic
Configuration
.................................... 60
6.3.1
Magnetization Reversal for Various Temperatures
in Fe-Tb Films Dominated by the Fe
Sublattice
...... 64
6.3.2
Magnetization Reversal for Various Temperatures
in Fe—Tb Films Dominated by the Tb
Sublattice
...... 66
6.4
Reversal Mechanism in the Vicinity
of the Compensation Point
.......................... 68
6.5
Summary
....................................... 74
References
......................................... 75
Percolated
Fejoo-xTbx Nanodot
Arrays: Exchange Interaction
and Magnetization Reversal
............................ 77
7.
і
Morphology and Structural Properties of Thin Fe-Tb
Films on Pre-patterned Substrates
...................... 78
7.2
Magnetization Reversal and Pinning Effects
.............. 79
7.3 Lokal
Magnetic Properties and Domain Configuration
....... 80
7.4
Angular Dependency of the Switching Field for Nanodots
and Trench Material
............................... 84
Contents xv
7.5
Summary
....................................... 85
References
......................................... 86
8
Interfacial
Exchange Coupling in Heterostructures of Fe-Tb
Alloy Films and
Со
/Pt
Multilayers
....................... 87
8.1
Morphology and Structural Properties
................... 88
8.2
Interfacial
Exchange Coupling with Regard
to the Dominant Moment in the
Fe—Tb
Alloy System
........ 88
8.2.1
Interfacial
Exchange Coupling in Fe
Dominated Heterostructures
.................... 89
8.2.2
Interfacial
Exchange Coupling in Tb
Dominated Heterostructures
.................... 94
8.2.3
The
Interfacial
Exchange Energy as Function
of the Composition of the Fe—Tb Layer
............ 97
8.3
Interfacial
Exchange Coupling Depending on the Thickness
of the
F
Layer
................................... 97
8.4
Interfacial
Exchange Coupling Depending on the Thickness
of the
FI
Pinning Layer
............................. 99
8.5
Training Effect in EB Heterostructures Dominated
by an AF Exchange
............................... 101
8.5.1
Characteristic of the Training Effect with Respect
to the Temperature
........................... 103
8.5.2
Influence of the Cooling Field
on the Training Effect
........................ 104
8.5.3
Cycle Field Dependence of the EB Training Effect
.... 105
8.6
Summary
....................................... 106
References
......................................... 107
9
Interlayer Exchange Coupling Through Pt Spacer Layers
in Fe-Tb/Pt/CCo/Pt] Heterostructures
..................... 109
9.1
Morphology and Structural Properties
................... 109
9.2
Influence of Pt Spacer Layer Thickness on the EB Field
...... 113
9.3
Summary
.......................................
IÍ5
References
......................................... 115
10
Conclusions
........................................ 117
Curriculum
Vitae
.......................................
Π
9
This thesis presents recent developments in magnetic coupling phenomena
of ferrimagnetic rare-earth-transition-metal Tb-Fe alloys and coupled sys¬
tems consisting of ferri-fcromagnetic heterostructures. Taking advantage
of the tunability of the exchange coupling between ferrimagnetic and ferro¬
magnetic layers by means of stoichiometry of the Tb-Fe layer, the variable
number of repetitions in the
Со
/Pt
multilayer as well as the thickness of an
interlayer spacer, it is demonstrated that large perpendicular unidirectional
anisotropy can be induced at room temperature. This robust perpendicular
exchange bias at room temperature opens up a path towards applications ii
spmtromcs.
|
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| illustrated | Illustrated |
| indexdate | 2024-07-10T01:12:17Z |
| institution | BVB |
| isbn | 9783319071053 |
| language | English |
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| physical | XXI, 121 S. Ill., graph. Darst. |
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| publisher | Springer |
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| spelling | Schubert, Christian 1984- Verfasser (DE-588)1054553904 aut Magnetic order and coupling phenomena a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures Christian Schubert Cham [u.a.] Springer 2014 XXI, 121 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Springer theses Zugl.: Chemnitz, Technische Univ., Diss., [2013] Magnetism Materials Physics (DE-588)4113937-9 Hochschulschrift gnd-content Erscheint auch als Online-Ausgabe 978-3-319-07106-0 Digitalisierung UB Regensburg - ADAM Catalogue Enrichment application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027524842&sequence=000003&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis Digitalisierung UB Regensburg - ADAM Catalogue Enrichment application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027524842&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA Klappentext |
| spellingShingle | Schubert, Christian 1984- Magnetic order and coupling phenomena a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures Magnetism Materials Physics |
| subject_GND | (DE-588)4113937-9 |
| title | Magnetic order and coupling phenomena a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures |
| title_auth | Magnetic order and coupling phenomena a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures |
| title_exact_search | Magnetic order and coupling phenomena a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures |
| title_full | Magnetic order and coupling phenomena a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures Christian Schubert |
| title_fullStr | Magnetic order and coupling phenomena a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures Christian Schubert |
| title_full_unstemmed | Magnetic order and coupling phenomena a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures Christian Schubert |
| title_short | Magnetic order and coupling phenomena |
| title_sort | magnetic order and coupling phenomena a study of magnetic structure and magnetization reversal processes in rare earth transition metal based alloys and heterostructures |
| title_sub | a study of magnetic structure and magnetization reversal processes in rare-earth-transition-metal based alloys and heterostructures |
| topic | Magnetism Materials Physics |
| topic_facet | Magnetism Materials Physics Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027524842&sequence=000003&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027524842&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA |
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