Statistical study of zig-zag transition boundaries in longitudinal digital magnetic recording

In this paper, we study the statistics of zig-zag transition walls in digital magnetic recording and their relationship to transition noise defining quantities. We provide analytic results that link the statistics of zig-zag transitions to media/recording parameters. The basis of our study is the triangle zig-zag transition (TZ-ZT) model due to its well-defined triangle zig-zag shape and its cross-track stability. The results we derive here, however, are of a general nature, and given the right interpretation, apply to other zig-zag models as well, as we show in the paper. We also provide an interpretation of the cross-track correlation width, linking this quantity to the statistics of magnetized clusters in thin-film magnetic media. The paper concludes by showing how these results can be used in media noise modeling.

[1]  A. Kavcic.  Experimental Validation of The Triangle Zig-Zag Transition Model , 1997, 1997 IEEE International Magnetics Conference (INTERMAG'97).

[2]  Aleksandar Kavcic,et al.  Signal generation model for high density magnetic recording , 1996, Proceedings of GLOBECOM'96. 1996 IEEE Global Telecommunications Conference.

[3]  José M. F. Moura,et al.  Expedient media noise modeling: isolated and interacting transitions , 1996 .

[4]  Jack K. Wolf,et al.  New model for media noise in thin-film magnetic recording media , 1995, Other Conferences.

[5]  H. Neal Bertram,et al.  Theory of Magnetic Recording , 1994 .

[6]  Xiaodong Che,et al.  General analysis of noise in recorded transitions in thin film recording media , 1993 .

[7]  Pu-Ling Lu,et al.  Angular variation of coercivity in thin-film media by micromagnetic model , 1992 .

[8]  Jack K. Wolf,et al.  A simple statistical model of partial erasure in thin film disk recording systems , 1991 .

[9]  B. K. Middleton,et al.  Recorded magnetisation distributions in thin film media , 1991 .

[10]  B. K. Middleton,et al.  Sawtooth magnetisation transitions and the digital recording properties of thin film recording media , 1990 .

[11]  Jian-Gang Zhu,et al.  Recording and transition noise simulations in thin film media , 1988 .

[12]  David B. Bogy,et al.  Measurement of head/disk spacing with a laser interferometer , 1988 .

[13]  J. Miles,et al.  The digital recording properties of thin film media having sawtooth magnetisation transitions , 1988 .

[14]  H. Suhl,et al.  Relationship between the transition width and the zigzag wavelength , 1988 .

[15]  Jian-Gang Zhu,et al.  Micromagnetic studies of thin metallic films (invited) , 1988 .

[16]  Yaw-shing Tang,et al.  Zig-zag domains and metal film disk noise , 1987 .

[17]  Marcel W. Muller,et al.  Williams-Comstock type model for sawtooth transitions in thin film media , 1987 .

[18]  T. Arnoldussen,et al.  Zigzag transition profiles, noise, and correlation statistics in highly oriented longitudinal film media , 1986 .

[19]  John G. Proakis,et al.  Probability, random variables and stochastic processes , 1985, IEEE Trans. Acoust. Speech Signal Process..

[20]  Peter K. George,et al.  Noise in high performance thin-film longitudinal magnetic recording media , 1985 .

[21]  R. Baugh,et al.  Measurement of noise in magnetic media , 1983 .

[22]  M. Freiser,et al.  On the zigzag form of charged domain walls , 1979 .

[23]  Bruno O. Shubert,et al.  Random variables and stochastic processes , 1979 .