Zobrazeno 1 - 10
of 57
pro vyhledávání: '"F. B. Humphrey"'
Autor:
M. Redjdal, F. B. Humphrey
Publikováno v:
physica status solidi (a). 201:1771-1776
Nano magnetic devices and current interest in nano-magnetism has motivated a new look at domain walls appropriate to such small sizes. Although the analytic expression for a Bloch wall in a soft magnetic material, such as Permalloy, was useful for la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::639861e9d39bffbd0b6950891c8fed8e
https://doi.org/10.1002/pssa.200304541
https://doi.org/10.1002/pssa.200304541
Autor:
W Escoffier, Juc Parrochon, F. B. Humphrey, H. Neal Bertram, Henry I. Smith, M. Farhoud, Walther Schwarzacher, T. A. Savas, M. Hwang, M. Redjdal, M. Shima, Caroline A. Ross
Publikováno v:
Journal of Magnetism and Magnetic Materials. 249:200-207
The fabrication and magnetic properties of arrays of short nanowires are reviewed. The arrays consist of electrodeposited ferromagnetic cylinders with aspect ratios of up to 3 and diameters of 57–180 nm. Their hysteresis loops are characterized and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe8c452d7a31f865687ab607c248838d
https://doi.org/10.1016/s0304-8853(02)00531-0
https://doi.org/10.1016/s0304-8853(02)00531-0
Publikováno v:
Journal of Applied Physics. 89:1310-1319
Large area arrays of cobalt and nickel particles with truncated conical shapes and diameters of 80–120 nm have been prepared using interference lithography combined with an evaporation and lift-off process. The magnetic hysteresis has been measured
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ce2643f0fcb3b59546ea293dc6841d2
https://doi.org/10.1063/1.1331656
https://doi.org/10.1063/1.1331656
Autor:
M. Hwang, Roy W. Chantrell, Yaowu Hao, F. B. Humphrey, M. Redjdal, Caroline A. Ross, M. Farhoud, Henry I. Smith, Frances M. Ross, T. A. Savas
Publikováno v:
Physical Review B. 62:14252-14258
The magnetic properties of a 100-nm-period large-area array of regular, 30-nm polycrystalline nickel particles have been studied. The particles are found to reverse incoherently, and their hysteresis behavior has been compared with a computational mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::151da38bc6b57b1b1b39c0e2e5b51dee
https://doi.org/10.1103/physrevb.62.14252
https://doi.org/10.1103/physrevb.62.14252
Publikováno v:
Journal of Applied Physics. 93:7933-7935
The effects of aspect ratio and interlayer coupling on the switching of 50 nm wide Co(5 nm)/Cu(3 nm)/Co(2 nm) rectangular elements with aspect ratios of 10, 5.0, 2.48, and 1.52 were studied using direct integration of the Landau–Lifshitz–Gilbert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c4012ef0331844c8d37af8557952de1
https://doi.org/10.1063/1.1558081
https://doi.org/10.1063/1.1558081
Publikováno v:
Journal of Applied Physics. 76:6204-6208
Changes in the impedance, ≊600%/Oe, at axial fields less than 1 Oe have been observed in the presence of a 90 kHz, few mA current through a soft, nearly zero magnetostrictive wire. In this 125 μm diameter CoFeSiB amorphous wire we observe a total
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23a3f779bcd3e66ded0ae90ecb753054
https://doi.org/10.1063/1.358536
https://doi.org/10.1063/1.358536
Autor:
M. Redjdal, F. B. Humphrey
Publikováno v:
Journal of Magnetism and Magnetic Materials. 133:11-15
A cross section of a wall in 10 μm thick material with Permalloy characteristics has been simulated on the massively parallel Thinking Machine system CM2 using direct integration of the LLG equation. A Cartesian lattice of 256 nodes representing 20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d12f2673deb7bf4a60a0f49f9074d102
https://doi.org/10.1016/0304-8853(94)90476-6
https://doi.org/10.1016/0304-8853(94)90476-6
Publikováno v:
Journal of Applied Physics. 89:7582-7584
The remanent state of truncated conical particles is investigated as a function of their size, aspect ratio, and anisotropy, using a micromagnetic model based on the Landau–Lifshitz–Gilbert equation. Particles with a base diameter smaller than th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb34bd147b91fbc274ace3c823918624
https://doi.org/10.1063/1.1361271
https://doi.org/10.1063/1.1361271
Publikováno v:
Journal of Applied Physics. 85:6193-6195
Direct integration of the Landau–Lifshitz–Gilbert equation in a three-dimensional rectangular lattice shows that fabrication asymmetry of tapered ends affects the magnetic switching behavior of the magnetic layers of a pseudospin valve (PSV) memo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3872f4b9dc649ff7f5430ff9727f5688
https://doi.org/10.1063/1.370218
https://doi.org/10.1063/1.370218
Publikováno v:
IEEE Transactions on Magnetics. 33:3999-4001
The dynamics of a single three dimensional 2/spl pi/-vertical Bloch line (2/spl pi/VBL) structure in a domain wall in garnet have been investigated using large scale numerical simulations. The domain wall distorts when a 2/spl pi/-VBL is present at e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9ab37339c425d4ac536802f8219c4b2
https://doi.org/10.1109/20.619642
https://doi.org/10.1109/20.619642