Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Dennis E. Speliotis"'
Autor:
Dennis E. Speliotis
Publikováno v:
Journal of Magnetism and Magnetic Materials. 193:29-35
Magnetic recording, beginning with Poulsen's experiments 100 years ago, is celebrating its centennial anniversary. After a spectacular growth during the past four decades it will achieve the celebrated goal of 10 Gbits/sq in by the end of this centur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f420da5e9f8a8144bfdaac7bca20fd4e
https://doi.org/10.1016/s0304-8853(98)00399-0
https://doi.org/10.1016/s0304-8853(98)00399-0
Autor:
Dennis E. Speliotis
Publikováno v:
Journal of Magnetism and Magnetic Materials. 120:11-15
Double-layer media employ two layers with different magnetic characteristics, with the objective of optimizing performance and/or reducing the overall cost. The idea has recently been applied to longitudinally oriented thin top layers of Ba-ferrite (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97b96f57fce13d3dcb806a1d8f017e8e
https://doi.org/10.1016/0304-8853(93)91275-c
https://doi.org/10.1016/0304-8853(93)91275-c
Autor:
S. L. Duan, Mahbub R. Khan, Dennis E. Speliotis, Bruno Marchon, Sang Y. Lee, Chandra Deshpandey, Jason Pressesky, M. R. Scheinfein
Publikováno v:
Journal of Magnetism and Magnetic Materials. 120:310-313
We report the modulation noise, magnetic microstructure, and transition region characteristics of two thin film media (CoCrTa and CoNi). The magnetic microstructure of these films was observed by using scanning electron microscopy with polarization a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c88f20d031c7dd84fdf9c0e0ed367c5
https://doi.org/10.1016/0304-8853(93)91349-c
https://doi.org/10.1016/0304-8853(93)91349-c
Autor:
Clark E. Johnson, Dennis E. Speliotis
Publikováno v:
Journal of Magnetism and Magnetic Materials. 120:112-115
Magnetic tapes used for credit cards and for identification and access control cards are migrating to extremely high coercivites (3000–4000 Oe) in order to avoid accidental erasure and demagnetization problems. These new media employ longitudinally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::117a355cd77b6a5fbd8223214b5e1cea
https://doi.org/10.1016/0304-8853(93)91299-m
https://doi.org/10.1016/0304-8853(93)91299-m
Autor:
H. F. Erskine, Jack H. Judy, Dennis E. Speliotis, M. S. Miller, B. M. Hagen, J. P. Walber, John M. Sivertsen, Yimin Hsu
Publikováno v:
Journal of Applied Physics. 70:7518-7523
The effect of magnetic layer deposition rate on longitudinal media’s magnetic, crystalline, and recording properties was studied. Slower deposition rates were found to produce a systematic reduction in media transition noise. X‐ray diffraction an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ce4886958b11b13a890ad8f18f014d1
https://doi.org/10.1063/1.349703
https://doi.org/10.1063/1.349703
Autor:
Dennis E. Speliotis
Publikováno v:
Journal of Magnetism and Magnetic Materials. 95:313-318
In recent years, there has been a strong movement away from the traditional Co-modified iron oxide particulate media and toward thin film metallic media used in small rigid disk systems. The main reason for this change is due-to the fact that these t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7313d8ec852a40ebb75088ffffa1609
https://doi.org/10.1016/0304-8853(91)90227-2
https://doi.org/10.1016/0304-8853(91)90227-2
Publikováno v:
Journal of Applied Physics. 81:3830-3832
The advent of magnetoresistance technology for read transducers should render the trend to higher remanence media counterproductive and undesirable because of demagnetization and nonlinear effects. In this investigation, we used magnetic force micros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7f0bbce65e81adc99d20acb48d675c0
https://doi.org/10.1063/1.364739
https://doi.org/10.1063/1.364739
Autor:
Dennis E. Speliotis
Publikováno v:
Journal of Magnetism and Magnetic Materials. 155:83-85
High-density magnetic tape recording has been expected to evolve from oxide particles to metal particles and ultimately to metal thin films which could provide the highest magnetization and the smallest thickness. Recent developments of very small me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23385a3ccdb5f4834ea3d8ecbe768dee
https://doi.org/10.1016/0304-8853(95)00682-6
https://doi.org/10.1016/0304-8853(95)00682-6
Publikováno v:
Journal of Applied Physics. 73:6689-6691
Hexagonal barium ferrite films have been grown on microcrystalline carbon substrates for the first time and thermally oxidized SiO2/Si wafers using dc facing targets sputtering. Si3N4 and SiO2/Cr underlayers were effective in preventing carbon diffus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a40fb98a3aa909825022b8889975d309
https://doi.org/10.1063/1.352503
https://doi.org/10.1063/1.352503
Autor:
Neil Heiman, Sun-Young Lee, Jason Pressesky, Mahbub R. Khan, M. R. Scheinfein, Dennis E. Speliotis, S. L. Duan
Publikováno v:
Journal of Applied Physics. 69:4745-4747
This paper reports on two thin‐film media alloys Co86Cr12Ta2 and Co75Ni25 which have very different noise characteristics. The magnetic microstructure of these films was observed with scanning electron microscopy with polarization analysis (SEMPA).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a72a9c7c22f50d43c0197a533ecbebf
https://doi.org/10.1063/1.348267
https://doi.org/10.1063/1.348267