Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Room temperature scanning micro-Hall probe microscope imaging of ferromagnetic microstructures in the presence of 2.5 Tesla pulsed magnetic fields generated by an integrated mini coil
Date
2002-12-01
Author
Sandhu, A
Masuda, H
Oral, Ahmet
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
139
views
6
downloads
Cite This
A unique magnetic imaging system comprising of a room temperature scanning Hall probe microscope with an integrated mini-coil capable of generating pulsed magnetic fields up to 2.5 Tesla (width of 3 ms) was developed for the direct and non-invasive magnetic imaging of ferromagnetic micro-domains in the presence of extremely large external pulsed magnetic fields without adverse vibrational disturbance of the sample during measurements. The system was successfully used for magnetic imaging of the erasure process of bit patterns on the surface of IAMB written floppy disks and the dynamics of micro-domain structures of demagnetized strontium ferrite permanent magnets under large external pulsed magnetic fields.
URI
https://hdl.handle.net/11511/94442
Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
DOI
https://doi.org/10.1143/jjap.41.l1402
Collections
Department of Physics, Article
Suggestions
OpenMETU
Core
Room temperature sub-micron magnetic imaging by scanning Hall probe microscopy
SANDHU, ADARSH; MASUDA, HİROSHİ; Oral, Ahmet; BENDİNG, SİMON J (IOP Publishing, 2001-06-01)
An ultra-high sensitive room temperature scanning Hall probe microscope (RT-SHPM) system incorporating a GaAs/AlGaAs micro-Hall probe was used for the direct magnetic imaging of localized magnetic field fluctuations in very close proximity to the surface of ferromagnetic materials. The active area, Hall coefficient and field sensitivity of the Hall probe were 0.8 mum x 0.8 mum, 0.3 Omega /G and 0.04G/root Hz, respectively. The use of a semiconducting Hall probe sensor enabled measurements in the presence of...
Room temperature scanning micro-Hall probe microscopy under extremely large pulsed magnetic fields
Sandhu, A; Masuda, H; Oral, Ahmet (2003-09-01)
The versatility of a room-temperature scanning Hall probe microscope system with an integrated minicoil capable of generating pulsed magnetic fields up to 2.9 T was demonstrated by imaging magnetic structures on the surface of 1.4-MB floppy disks and demagnetized strontium ferrite permanent magnets. Vibration isolation between the sample and minicoil was achieved by using a combination of quartz glass plates and silicone gel layers and enabled extremely fast measurements under fields as high as 2.9 T, witho...
Room temperature scanning Hall probe microscopy of localized magnetic field fluctuations on the surfaces of magnetic recording media, permanent magnets and crystalline garnet films in external bias fields
Sandhu, A; Iida, N; Masuda, H; Oral, Ahmet; Bending, SJ (2002-04-01)
A sub-micron room temperature scanning Hall probe microscope (RT-SHPM) was used for real-time imaging of surface magnetic domains of floppy disks, Sr ferrite magnets and Bi-substituted iron garnets placed in large external bias fields. Domain wall nucleation was observed in the garnets where bubble lattices expanded, collapsed and transformed into stripe domains in cyclic bias fields. Evolution of RT-SHPM images was compared with conventional vibrating sample magnetometer measurements.
Room temperature scanning Hall probe microscopy using GaAs/AlGaAs and Bi micro-hall probes
Sandhu, A; Masuda, H; Oral, Ahmet; Bending, S.J; Yamada, A; Konagi, M (2002-08-12)
A room temperature scanning Hall probe microscope system utilizing GaAs/AlGaAs and bismuth micro-Hall probes was used for magnetic imaging of ferromagnetic domain structures on the surfaces of crystalline thin film garnets and permanent magnets. The Bi micro-Hall probes had dimensions ranging between 0.25 and 2.8 mum(2) and were fabricated using a combination of optical lithography and focused ion beam milling. The use of bismuth was found to overcome surface depletion effects associated with semiconducting...
Room temperature scanning micro-Hall probe microscopy under extremely large pulsed magnetic fields
Sandhu, A.; Masuda, H.; Oral, Ahmet (2003-01-01)
© 2003 IEEE.In this paper, we describe the use of pulsed magnetic field as a well established method for producing extremely large fields but the integration of pulse coils and peripheral instrumentation with the RT-SHPM necessitates extreme care due to the adverse effects of external vibrations during continuous magnetic imaging measurements.
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
A. Sandhu, H. Masuda, and A. Oral, “Room temperature scanning micro-Hall probe microscope imaging of ferromagnetic microstructures in the presence of 2.5 Tesla pulsed magnetic fields generated by an integrated mini coil,”
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
, vol. 41, no. 12A, pp. 0–0, 2002, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/94442.