Search Results - (Author, Cooperation:T. M. Crawford)

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  1. 1
    M. McDonald ; M. Bayliss ; B. A. Benson ; R. J. Foley ; J. Ruel ; P. Sullivan ; S. Veilleux ; K. A. Aird ; M. L. Ashby ; M. Bautz ; G. Bazin ; L. E. Bleem ; M. Brodwin ; J. E. Carlstrom ; C. L. Chang ; H. M. Cho ; A. Clocchiatti ; T. M. Crawford ; A. T. Crites ; T. de Haan ; S. Desai ; M. A. Dobbs ; J. P. Dudley ; E. Egami ; W. R. Forman ; G. P. Garmire ; E. M. George ; M. D. Gladders ; A. H. Gonzalez ; N. W. Halverson ; N. L. Harrington ; F. W. High ; G. P. Holder ; W. L. Holzapfel ; S. Hoover ; J. D. Hrubes ; C. Jones ; M. Joy ; R. Keisler ; L. Knox ; A. T. Lee ; E. M. Leitch ; J. Liu ; M. Lueker ; D. Luong-Van ; A. Mantz ; D. P. Marrone ; J. J. McMahon ; J. Mehl ; S. S. Meyer ; E. D. Miller ; L. Mocanu ; J. J. Mohr ; T. E. Montroy ; S. S. Murray ; T. Natoli ; S. Padin ; T. Plagge ; C. Pryke ; T. D. Rawle ; C. L. Reichardt ; A. Rest ; M. Rex ; J. E. Ruhl ; B. R. Saliwanchik ; A. Saro ; J. T. Sayre ; K. K. Schaffer ; L. Shaw ; E. Shirokoff ; R. Simcoe ; J. Song ; H. G. Spieler ; B. Stalder ; Z. Staniszewski ; A. A. Stark ; K. Story ; C. W. Stubbs ; R. Suhada ; A. van Engelen ; K. Vanderlinde ; J. D. Vieira ; A. Vikhlinin ; R. Williamson ; O. Zahn ; A. Zenteno
    Nature Publishing Group (NPG)
    Published 2012
    Staff View
    Publication Date:
    2012-08-17
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    J. D. Vieira ; D. P. Marrone ; S. C. Chapman ; C. De Breuck ; Y. D. Hezaveh ; A. Weibeta ; J. E. Aguirre ; K. A. Aird ; M. Aravena ; M. L. Ashby ; M. Bayliss ; B. A. Benson ; A. D. Biggs ; L. E. Bleem ; J. J. Bock ; M. Bothwell ; C. M. Bradford ; M. Brodwin ; J. E. Carlstrom ; C. L. Chang ; T. M. Crawford ; A. T. Crites ; T. de Haan ; M. A. Dobbs ; E. B. Fomalont ; C. D. Fassnacht ; E. M. George ; M. D. Gladders ; A. H. Gonzalez ; T. R. Greve ; B. Gullberg ; N. W. Halverson ; F. W. High ; G. P. Holder ; W. L. Holzapfel ; S. Hoover ; J. D. Hrubes ; T. R. Hunter ; R. Keisler ; A. T. Lee ; E. M. Leitch ; M. Lueker ; D. Luong-Van ; M. Malkan ; V. McIntyre ; J. J. McMahon ; J. Mehl ; K. M. Menten ; S. S. Meyer ; L. M. Mocanu ; E. J. Murphy ; T. Natoli ; S. Padin ; T. Plagge ; C. L. Reichardt ; A. Rest ; J. Ruel ; J. E. Ruhl ; K. Sharon ; K. K. Schaffer ; L. Shaw ; E. Shirokoff ; J. S. Spilker ; B. Stalder ; Z. Staniszewski ; A. A. Stark ; K. Story ; K. Vanderlinde ; N. Welikala ; R. Williamson
    Nature Publishing Group (NPG)
    Published 2013
    Staff View
    Publication Date:
    2013-03-15
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Russek, S. E. ; Crawford, T. M. ; Silva, T. J.

    [S.l.] : American Institute of Physics (AIP)
    Published 1999
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Using the second-harmonic magneto-optic Kerr effect (SHMOKE), we have measured the interfacial magnetic properties of NiFe/Al/Al2O3 heterostructures as a function of Al2O3 thickness and processing conditions. The samples were prepared like magnetic tunnel junctions except that the top electrodes were not deposited. A large change in SHMOKE contrast was observed for different oxidation processes and Al2O3 thicknesses. The magnetic SHMOKE contrast from a plasma oxidized sample in which the oxidation front is thought to be inside the original NiFe film is 70%, whereas the SHMOKE contrast from a thermally oxidized NiFe/Al sample, in which the oxidation front is ∼1 nm from the Al/NiFe interface is only 15%. Further, the phase of the signal is reversed between the two structures. The SHMOKE data have been correlated with tunneling measurements on similarly fabricated structures. For the two samples listed above, the junction resistivity varied from 10−1 Ω cm2 (plasma oxidized) to 10−6 Ω cm2 (thermally oxidized). These results indicate that SHMOKE may be useful for assessing tunnel junction quality during processing.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.369852

    Articles: DFG German National Licenses
  4. 4
    Crawford, T. M. ; Rogers, C. T. ; Silva, T. J. ; Kim, Y. K.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1996
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We report second-harmonic magneto-optic Kerr measurements on air-exposed, polycrystalline Ni81Fe19 thin films, ranging in thickness from 1 nm to 2 μm, on Al2O3 coated Si (001). For samples thicker than 20 nm, in the transverse Kerr geometry, we observe a factor of 4 change in second-harmonic intensity upon magnetization reversal. For thin samples, we observe interference between second-harmonic fields from the various interfaces and deterioration of ferromagnetism in the 1 and 2 nm films. Modeling suggests that the Ni81Fe19/Al2O3 interface has a larger second-order susceptibility than the air/Ni81Fe19 surface. © 1996 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.115703

    Articles: DFG German National Licenses
  5. 5
    Crawford, T. M. ; Silva, T. J.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1999
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We have measured the in-plane magnetization dynamics of Ni81Fe19 films using the surface- and interface-sensitive second-harmonic magneto-optic Kerr effect. The dynamical magnetization was measured on patterned Ni81Fe19 stripes as a function of an in-plane magnetic field applied parallel to the anisotropy axis. The excitation sources were 100 ps risetime magnetic field impulses and steps. The minimum magnetization switching times were 〈300 ps, and precessional free-induction decay was observed. The dynamics for both impulse and step excitation are fitted to the Landau–Lifshitz equation, yielding values for the anisotropy field, gyroscopic splitting factor, and damping. The local surface precessional frequency and anisotropy are different from the average bulk values, demonstrating that this technique possesses the necessary sensitivity to detect variations in localized surface and interface dynamics. © 1999 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.123353

    Articles: DFG German National Licenses
  6. 6
    Crawford, T. M. ; Kabos, P. ; Silva, T. J.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 2000
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We demonstrate a method of eliminating overshoot and ringing in magnetization dynamics when the system bandwidth includes the intrinsic ferromagnetic resonance (FMR). The method employs staggered step excitation for the cancellation of FMR oscillations while maximizing the risetime of the magnetization response. The second-harmonic magneto-optic Kerr effect is used to measure the magnetic response at a localized spot on the sample. The measured response is adequately modeled with the Landau–Lifshitz–Gilbert differential equation. We explain the observed behavior in terms of destructive interference.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.126280

    Articles: DFG German National Licenses