Magnetic resonance method and apparatus for detecting an atomic

Electricity: measuring and testing – Particle precession resonance – Spectrometer components

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

324300, G01R 3320

Patent

active

056191391

ABSTRACT:
A method and an apparatus are disclosed for detecting an atomic structure of a sample along a surface thereof. The method comprises arranging the sample in a constant magnetic field (B.sub.0) of predetermined field strength and high homogeneity and irradiating a high-frequency magnetic field (B.sub.1) of a predetermined frequency on the sample, wherein the fields (B.sub.0) and (B.sub.1) are oriented perpendicularly to each other. The method further comprises providing a force-sensitive sensor having a paramagnetic tip comprising a paramagnetic material. The sensor is placed in close vicinity to the sample such that the paramagnetic tip is in atomic interaction with the sample surface which means that the distance between the tip and the surface is in the order of between 1 and 10 .ANG.. The predetermined field strength and the predetermined frequency are set such that electron paramagnetic resonance (EPR) is excited within the tip paramagnetic material. The paramagnetic tip is then displaced parallel to the sample surface for mapping predetermined points on the sample surface. During displacing the tip the force exerted on the tip by a local inhomogeneous magnetic field (B.sub.loc) caused by atomic magnetic moments (m.sub.e,k) of the sample is measured.

REFERENCES:
patent: 5166615 (1992-11-01), Sidles
patent: 5266896 (1993-11-01), Rugar et al.
patent: 5319977 (1994-06-01), Quate et al.
patent: 5410910 (1995-05-01), Somlyo et al.
Zuger, "First images from a magnetic resonance force microscope" Applied Physics Letters, vol. 63, No. 18, pp. 2496-2498 (Nov. 1993).
Ruger et al, "A mechanical detection of magnetic resonance", Nature vol. 360, No. 6404 pp. 563-566, (Dec. 1992).
Binning et al., "Surface Studies by Scanning Tunneling Microscopy", Physical Review Letters, vol. 49, No. 1, The American Physical Society (5 Jul. 1982), pp. 56-61.
Binning et al., "7.times.7 Reconstruction on Si(III) Resolved in Real Space", Physical Review Letters, vol. 50, No. 2, The American Physical Society (10 Jan. 1983), pp. 120-123.
Binning et al., "Atomic Force Microscope", Physical Review Letters, vol. 56, No. 9, The American Physical Society (3 Mar.1986), pp. 930-933.
Manassen et al., "Direct Observation of the Precession of Individual Paramagnetic Spins on Oxidized Silicon Surfaces", Physical Review Letters, vol. 62, No. 21, The American Physical Society (22 May 1989), pp. 2531-2534.
Wiesendanger et al., "Observation of Vacuum Tunneling of Spin-Polarized Electrons with the Scanning Tunneling Microscope", Physical Review Letters, vol. 65, No. 2, The American Physical Society (9 Jul. 1990), pp. 247-250.
Sidles, J.A., "Noninductive detection of single-proton magnetic resonance", Applied Physical Letters, vol. 58, No. 24, The American Institute of Physics (17 Jun. 1991), pp. 2854-2856.
Sidles, J.A., "Folded Stern-Gerlach Experiment as a Means for Detecting Nuclear Magnetic Resonance in Individual Nuclei", Physical Review Letters, vol. 68, No. 8, The American Physical Society (24 Feb. 1992), pp. 1124-1127.
Rugar et al., "Mechanical detection of magnetic resonance", Nature, vol. 360 (10 Dec. 1992), pp. 563-566.
Zuger et al., "First images from a magnetic resonance force microscope", Applied Physical Letters, vol. 63, No. 18, American Institute of Physics (1 Nov. 1993), pp. 2496-2498.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Magnetic resonance method and apparatus for detecting an atomic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic resonance method and apparatus for detecting an atomic , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic resonance method and apparatus for detecting an atomic will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2399728

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.