Development of nano-scaled spin materials and its applications
- Title
- Development of nano-scaled spin materials and its applications
- Alternative Title
- 스핀 나노 물질의 개발과 응용 연구
- Author(s)
- Yunji Eom
- DGIST Authors
- Yunji Eom ; CheolGi Kim ; Jaejong Lee
- Advisor
- 김철기
- Co-Advisor(s)
- Jaejong Lee
- Issued Date
- 2022
- Awarded Date
- 2022/08
- Type
- Thesis
- Description
- Spin materials, Magnetic nanoparticles, Spin-crossover, On-chip magnetometer
- Abstract
- Table Of Contents
-
Ⅰ.Introduction 1
1.1 Spin materials 3
1.2 Magnetic nanoparticles 6
1.3 On chip magnetometer platform 9
1.4 In situ monitoring of synthesis nanoparticles 12
Ⅱ. Experiment detail 16
2.1 Synthesis of spin materials 17
2.1.1 Spin crossover nanoparticles 17
2.1.2 Fe3O4 magnetic nanoparticles 17
2.1.3 Au-Fe3O4 Janus magnetic nanoparticles 18
2.1.4 FePt-Fe3O4 hetero structure magnetic nanoparticles 20
2.2 Characterization for nanoparticles 21
2.2.1Transmission Electron Microscopy 21
2.2.2 X-ray diffraction 21
2.2.3 Vibrating Sample Magnetometer 22
2.2.4 Cell viability test 23
2.3 Fabrication of magnetometer platform 24
2.3.1 Photolithography 25
2.3.2 Magnetron sputtering system 27
2.3.3 Magnetoresistance measurement 29
Ⅲ. Theorical background 30
3.1 Basic of spin crossover materials 31
3.2 Formation of nanoparticles 32
3.3 Property of magnetic nanoparticles 34
3.4 Basics of PHMR Sensor 38
3.5 Detection of magnetic nanoparticles 40
Ⅳ. Results and discussion 43
4.1 Nano-scaled spin materials 44
4.1.1 Fe(pyrazine)[Pt(CN)4I] spin crossover nanoparticles 44
4.1.2 Au-Fe3O4 Janus magnetic nanoparticles 48
4.1.3 FePt-Fe3O4 hetero structure magnetic nanoparticles 54
4.2 Application of nano-scaled spin materials 64
4.2.1 Application as temperature sensing material 64
4.2.2 Application as targeting separation carrier 73
4.3 On chip magnetometer platform 76
4.3.1 Platform design for detection of magnetic nanoparticles 76
4.3.2 On chip magnetometer optimization 83
4.3.3 Validation test of on chip magnetometer 86
4.3.4 In situ monitoring of synthesis nanoparticles 89
Ⅴ. Summary 94
Reference 97
요약문 102
List of publications 104
- URI
-
http://dgist.dcollection.net/common/orgView/200000631043
http://hdl.handle.net/20.500.11750/16806
- Degree
- Doctor
- Department
- Department of Physics and Chemistry
- Publisher
- DGIST
- Related Researcher
-
-
Kim, CheolGi
- Research Interests Magnetic Materials and Spintronics; Converging Technology of Nanomaterials and Biomaterials; Bio-NEMS;MEMS
-
- Files in This Item:
-
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- Appears in Collections:
- Department of Physics and Chemistry Theses Ph.D.
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