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

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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

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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...
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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

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.