Presentation	2001/7/6 Sub-Micron Magnetic Imaging by Room Temperature Scanning Hall Probe Microscopy A. Sandhu, H. Masuda, A. Oral, S.J. Bending,
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Abstract(in English)	A new versatile room temperature scanning Hall probe microscope system (RT-SHPM) was used for magnetic imaging of localised magnetic field fluctuations in close proximity to the surfaces of longitudinal magnetic recording media, low coercivity perpendicularly anisotropic iron garnet epitaxial layers, and demagnetized strontium ferrite permanent magnets placed in externally applied magnetic fields. Magnetic field fluctuations were sensed using an ultra-high sensitive sub-micron GaAs Hall probe with an active area of ～0.8x0.8μm^2, room temperature Hall coefficient of 0.3Ω/G and field sensitivity of 0.04G/√. The Hall probe is not magnetized by magnetic fields hence enabling the real time (～1frame/sec) measurments in external magnetic fields. The results described include the observation of sharp magnetic transitions in written floppy disks to coalesce into small islands under external fields and the transformation of magnetic bubble lattices into striped-maze patterns in Bi-substituted iron garnet thin films in external bias fields. Results obtained using a Bi micro-Hall probe sensor are described.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	scanning Hall probe microscopy / magnetic recording / garnets / magnetic domains / permanent magnets
Paper #	MR2001-14
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Conference Information
Committee	MR
Conference Date	2001/7/6(1days)
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Paper Information
Registration To	Magnetic Recording (MR)
Language	ENG
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Sub-Micron Magnetic Imaging by Room Temperature Scanning Hall Probe Microscopy
Sub Title (in English)
Keyword(1)	scanning Hall probe microscopy
Keyword(2)	magnetic recording
Keyword(3)	garnets
Keyword(4)	magnetic domains
Keyword(5)	permanent magnets
1st Author's Name	A. Sandhu
1st Author's Affiliation	Dept. of Electrical and Electronic Engineering, Tokai University()
2nd Author's Name	H. Masuda
2nd Author's Affiliation	Toei Kogyo Ltd.
3rd Author's Name	A. Oral
3rd Author's Affiliation	Bilkent University
4th Author's Name	S.J. Bending
4th Author's Affiliation	University of Bath
Date	2001/7/6
Paper #	MR2001-14
Volume (vol)	vol.101
Number (no)	179
Page	pp.pp.-
#Pages	4
Date of Issue