Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Mark William Covington"'
Autor:
Lei Wang, Victor Boris Sapozhnikov, Qing He, Mark William Covington, Scott Stokes, Dion Song, Dimitar V. Dimitrov, Jiaoming Qiu, B. Miller, P. Kolbo, Yonghua Chen, Kaizhong Gao
Publikováno v:
IEEE Transactions on Magnetics. 46:697-701
We review the 2 Tbit/in2 reader design landscape based on existing knowledge and projection. We found that the reader signal-to-noise ratio (SNR) requirement will be highly challenging due to the rapid increase in noise and the additional requirement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64a98393a0ba7a3ebbc160e71457b4ff
https://doi.org/10.1109/tmag.2010.2041040
https://doi.org/10.1109/tmag.2010.2041040
Autor:
A. Rebei, N. J. Gokemeijer, Mark William Covington, M. AlHajDarwish, Michael Allen Seigler, Y. Ding, G. J. Parker
Publikováno v:
Journal of Magnetism and Magnetic Materials. 287:325-332
We present experimental and numerical micromagnetic data that illustrate manifestations of spin momentum transfer in current perpendicular to the plane spin valves. Noise measurements confirm predictions of current induced magnetization dynamics due
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fb21bd08f5130f67bdfa8445e65ec5b
https://doi.org/10.1016/j.jmmm.2004.10.053
https://doi.org/10.1016/j.jmmm.2004.10.053
Autor:
Mark William Covington, E.C. Johns, K. Minor, Billy Wayne Crue, Mark H. Kryder, Robert Earl Rottmayer, Thomas McLendon Crawford, P.A.A. van der Heijden, U. Tran, J. West, J. Jayashankar, Sharat Batra
Publikováno v:
IEEE Transactions on Magnetics. 38:157-162
In this paper, we discuss a single-pole perpendicular head design and process that is suitable for densities of the order of 100 Gb/in/sup 2/. The single-pole write head was integrated with a narrow-track bottom spin valve reader. The design uses a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65d9236c1765485a4bddded6e21cc132
https://doi.org/10.1109/tmag.2002.988929
https://doi.org/10.1109/tmag.2002.988929
In large magnetoresistance devices spin torque-induced changes in resistance can produce GHz current and voltage oscillations which can affect magnetization reversal. In addition, capacitive shunting in large resistance devices can further reduce the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f742cc624d4fd99ef98db3d454c4a04
http://arxiv.org/abs/0904.4159
http://arxiv.org/abs/0904.4159
Autor:
Yaroslaw B. Bazaliy, Samir Y. Garzon, Shehzaad Kaka, Mark William Covington, Richard A. Webb, Thomas M. Crawford
Publikováno v:
Physical Review B. 79
We show that the absence of preswitching oscillations (``incubation delay'') in magnetic tunnel junctions can be explained within the macrospin model by a sizable fieldlike component of the spin-transfer torque. It is further suggested that measureme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce2310f555e55c3556448845f1697388
https://doi.org/10.1103/physrevb.79.100402
https://doi.org/10.1103/physrevb.79.100402
Autor:
Shehzaad Kaka, Richard A. Webb, Mark William Covington, Thomas M. Crawford, Samir Y. Garzon, Longfei Ye
The magnetization orientation of a nanoscale ferromagnet can be manipulated using an electric current via the spin transfer effect. Time domain measurements of nanopillar devices at low temperatures have directly shown that magnetization dynamics and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69a4c5b1ce160541493a576e73107370
http://arxiv.org/abs/0806.2297
http://arxiv.org/abs/0806.2297
Autor:
Y. Yang, Thomas McLendon Crawford, N. J. Gokemeijer, Mark William Covington, Michael Allen Seigler
Publikováno v:
SPIE Proceedings.
A spin-polarized dc current can induce steady-state, microwave frequency magnetization dynamics in a nanoscale ferromagnet. The torque that drives these dynamics originates from the exchange of spin angular momentum between conduction electrons and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0e26f8d508a8de0f26df796e3938e0b
https://doi.org/10.1117/12.610641
https://doi.org/10.1117/12.610641
Publikováno v:
MRS Proceedings. 906
The resistance and magnetoresistance (MR) of three-dimensional current-perpendicular-to-plane (CPP) structures have been calculated via numerical finite element solutions of the Laplace equation. This model accounts for the non-uniform current paths
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1caefa0bfdda59e96d3ec2efa875ea45
https://doi.org/10.1557/proc-0906-hh01-07
https://doi.org/10.1557/proc-0906-hh01-07
Autor:
Mark William Covington, Andrew R. Eckert, T.M. Crawford, A.K. Langzettel, Michael Allen Seigler
Publikováno v:
Digest of INTERMAG 2003. International Magnetics Conference (Cat. No.03CH37401).
In this paper, we have characterized the magnetic field from waveguides with widths ranging from 1 /spl mu/m to < 100 nm, in both single and dual wire geometrics. Our Cu waveguides are fabricated by a combination of conventional optical lithography a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9a950f7658c18f31914ccd872d42b00
https://doi.org/10.1109/intmag.2003.1230670
https://doi.org/10.1109/intmag.2003.1230670
Autor:
R.J.M. van de Veerdonk, Thomas M. Crawford, Shingo Tamaru, James A. Bain, Mark H. Kryder, Mark William Covington
Publikováno v:
IEEE International Digest of Technical Papers on Magnetics Conference.
This work presents experimental results of magnetostatic mode excitation using scanning Kerr microscopy under continuous sinusoidal excitation in the microwave frequency range. This technique was applied to $100\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f780356486fcfb056514ba37fd0dc89f
https://doi.org/10.1109/intmag.2002.1001112
https://doi.org/10.1109/intmag.2002.1001112