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Cryogenic magnetic force microscope

Rev. Sci. Instrum. 71, 3782 (2000); doi:10.1063/1.1290039

Issue Date: October 2000

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M. Roseman and P. Grütter
Centre for the Physics of Materials, Department of Physics, McGill University, Montréal, Canada
We describe our cryogenic magnetic force microscope, operating between 4.2 and 300 K, in fields of 0–8 T. The system uses a fiber optic interferometer to measure cantilever deflections, permitting the tracking of the resonance frequency through the use of a phase locked loop. Piezoelectric positioners, capable of operation in high magnetic fields, perform in situ tip and fiber approaches. As an effective means of vibration isolation, we suspend the microscope from a soft bellows which attenuates vibrations by more than an order of magnitude. A detailed noise analysis indicates that although the microscope is thermally limited, the system frequency resolution is currently limited by the shot noise of the interferometer. ©2000 American Institute of Physics.
History: Received 16 March 2000; accepted 27 June 2000
Permalink: http://link.aip.org/link/?RSINAK/71/3782/1
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KEYWORDS and PACS

Keywords
PACS
  • 07.79.Pk
    Instruments, apparatus, components, and techniques common to several branches of physics and astronomy Scanning probe microscopes, components, and techniques Magnetic force microscopes
  • 07.20.Mc
    Instruments, apparatus, components, and techniques common to several branches of physics and astronomy Thermal instruments, apparatus, and techniques Cryogenics, refrigerators; low-temperature techniques
  • 07.60.Vg
    Instruments, apparatus, components, and techniques common to several branches of physics and astronomy Optical instruments, equipment, and techniques Fiber-optic instruments
  • 07.60.Ly
    Instruments, apparatus, components, and techniques common to several branches of physics and astronomy Optical instruments, equipment, and techniques Interferometers
  • 07.10.Fq
    Instruments, apparatus, components, and techniques common to several branches of physics and astronomy Mechanical instruments, equipment, and techniques Vibration isolation
  • 06.60.Sx
    Metrology, measurements, and laboratory procedures Laboratory procedures Positioning and alignment; manipulating, remote handling
  • 42.81.Pa
    Optics Fiber optics Sensors, gyros
  • YEAR: 2000

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PUBLICATION DATA

ISSN:
0034-6748 (print)   1089-7623 (online)
Publisher:
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REFERENCES (33)
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