Zobrazeno 1 - 10
of 58
pro vyhledávání: '"M. Mirzamaani"'
Publikováno v:
IEEE Transactions on Magnetics. 45:2694-2700
We report a systematic study of the switching and recording characteristics of perpendicular magnetic recording media in which the exchange coupling between granular oxide and continuous cap layers was varied. The interfacial exchange coupling streng
Autor:
J. Risner-Jamtgaard, Qi-Fan Xiao, Xiaoping Bian, Kentaro Takano, X. Xu, M. Mirzamaani, Kai Tang, Gunn Choe, G. Wang, J. Zhang, Yoshihiro Ikeda
Publikováno v:
IEEE Transactions on Magnetics. 45:786-792
The core of the current granular perpendicular magnetic recording (PMR) media is the granular oxide magnetic layer (GOML). We observe that a fcc NiW seed layer, followed by a hcp Ru layer sputtered under low pressure (LP-Ru) and then by a hcp Ru laye
Publikováno v:
IEEE Transactions on Magnetics. 44:3507-3510
Exchange coupled composite (ECC) media have been proposed as a way to facilitate writing of perpendicular media to allow use of magnetic materials with higher magnetic anisotropy (Ku) to increase media thermal stability. This paper is an experimental
Publikováno v:
IEEE Transactions on Magnetics. 44:3480-3483
A new underlayer structure consisting of a magnetic seed was used to reduce the recording layer-to-soft magnetic underlayer (RTS) spacing and its effect on perpendicular recording characteristics was investigated. The RTS spacing is reduced by partia
Autor:
Mark F. Mercado, Kai Tang, R. Nimmagadda, N. Supper, M. Mirzamaani, M. Doerner, Li Tang, Qi-Fan Xiao, Eric E. Fullerton, Ching Tsang, Hoa Do, Xiaoping Bian, A. Polcyn, Hal J. Rosen, D. T. Margulies
Publikováno v:
IEEE Transactions on Magnetics. 41:642-647
Lamination of multiple isolated magnetic layers has been shown to be an effective method to significantly increase signal-to-noise ratio in longitudinal media. These laminated media, however, are accompanied by low overwrite and wide magnetic pulse w
Autor:
Tim Minvielle, Mark F. Mercado, Xiaoping Bian, Qi-Fan Xiao, Li Tang, M. Mirzamaani, Jizhong He, J. Zhang, A. Polcyn, M. Doerner, P. Dennig, Kai Tang, J. Hagan
Publikováno v:
IEEE Transactions on Magnetics. 39:2252-2257
This paper reports on the recent breakthrough of achieving high orientation ratio (OR) on directly textured glass substrates. The authors show the necessary structural conditions to obtain OR on glass substrates. They present a unique design of a med
Autor:
Xiaoping Bian, Michael Andrew Parker, Dieter Weller, Kurt A. Rubin, Eric E. Fullerton, Mary Frances Doerner, M. E. Schabes, Qingzhi Peng, S. Yuan, M. Mirzamaani, Kentaro Takano, Mustafa Pinarbasi, Michael J. Madison, Michael F. Toney, T.C. Arnoldussen, Kai Tang, A. Polcyn, D. T. Margulies
Publikováno v:
IEEE Transactions on Magnetics. 37:1052-1058
A recording density of 35 Gbits/in/sup 2/ was achieved in longitudinal recording media with high-sensitivity GMR heads. The media displayed excellent thermal stability as a result of a CoPtCrB alloy with high magnetocrystalline anisotropy and relativ
Autor:
Xiaoping Bian, J. Feng, Mary Frances Doerner, M. Mirzamaani, Kai Tang, M. Gatherwright, T.C. Arnoldussen
Publikováno v:
IEEE Transactions on Magnetics. 36:92-97
The thermal stability of data stored in thin film recording media is closely tied to signal-to-noise ratio (SNR), yet is not correlated in a simple way. Indeed grain size strongly affects both SNR and thermal stability, but macroscopic magnetic prope
Autor:
M. Mirzamaani, Mary Frances Doerner
Publikováno v:
IEEE Transactions on Magnetics. 32:3638-3641
A novel method for fabricating thin film disk media with controlled surface roughness via sputter deposition is described. This technique uses the deposition of a metal nitride such as AlN on a polished substrate to create discrete spherical features
Autor:
Eric E. Fullerton, Kai Tang, D. T. Margulies, M. Mirzamaani, Li Tang, Xiaoping Bian, M. Doerner, N. Supper, Mark F. Mercado, A. Polcyn, Ching Tsang
Publikováno v:
IEEE Transactions on Magnetics. 40:3548-3550
Longitudinal media with multiple isolated magnetic layers (laminated media) have been shown to have a significant signal-to-noise ratio (SNR) advantage over conventional media. However, the application of laminated media has been hindered by reduced