Toward an understanding of grain-to-grain anisotropy field variation in thin film media

IEEE Transactions on Magnetics

Volumn 41, Issue 2, 2005, Pages 543-548

  Zhu, Jian Gang ^a   Peng, Yingguo ^a   Laughlin, David E ^a  

^a CARNEGIE MELLON UNIVERSITY   (United States)

Author keywords

Anisotropy field; Grain; Medium noise; Order parameter; Thin film media

Indexed keywords

CRYSTAL MICROSTRUCTURE; ELECTRON ENERGY LOSS SPECTROSCOPY; ENERGY DISPERSIVE SPECTROSCOPY; GRAIN BOUNDARIES; JITTER; MAGNETIC ANISOTROPY; MAGNETIC FIELDS; MAGNETIC RECORDING; MAGNETIZATION; TRANSMISSION ELECTRON MICROSCOPY;

ANISOTROPY FIELDS; GRAIN; MEDIUM NOISE; ORDER PARAMETERS; THIN FILM MEDIA;

THIN FILMS;

EID: 14544289064     PISSN: 00189464     EISSN: None     Source Type: Journal    
DOI: 10.1109/TMAG.2004.838074     Document Type: Article

References (20)

1. J. Zhu, unpublished results.
2. B. Lu and D. E. Laughlin, "Microstructure of longitudinal media," in The Physics of Ultrahigh-Density Magnetic Recording, ser. Springer Series in Surface Sciences, M. Plumer, J. Van Ek, D. Weller, and G. Ertl, Eds. New York: Springer-Verlag, 2001, vol. 41.
3. T. C. Arnoldussen, "Film media," in Magnetic Recording Technology, C. D. Mee and E. D. Daniel, Eds. Piscataway, NJ: IEEE Press, 1995, ch. 4, pp. 4.1-4.59.
4. T. Yogi, T. A. Nguyen, S. E. Lambert, G. L. Gorman, and G. Castillo, "Role of atomic mobility in the transition noise of longitudinal media," IEEE Trans. Magn., vol. 26, no. 5, pp. 1578-1580, Sep. 1990.
5. I. L. Sanders, T. Yogi, J. K. Howard, S. E. Lambert, G. L. Gorman, and C. Hwang, "Dependence of magnetics, microstructures and recording properties on underlayer thickness in CoNiCr/Cr media," IEEE Trans. Magn., vol. 25, no. 5, pp. 3869-3869, Sep. 1989.
6. T. Shimizu, Y. Ikeda, and S. Takayama, "CoPtCr composite magnetic thin films," IEEE Trans. Magn., vol. 28, no. 5, pp. 3102-3104, Sep. 1992.
7. S. Sun, C. B. Murray, D. Weller, L. Folks, and A. Moser, "Monodisperse FePt nanoparticles and ferromagnetic FePt nanocrystal superlattices," Science, vol. 287, pp. 1989-1991, 2000.
8. S. Jeong, Y.-N. Hsu, D. E. Laughlin, and M. E. McHenry, "Magnetic properties of nanostructured CoPt and FePt thin films," IEEE Trans. Magn., vol. 36, no. 5, pp. 2336-2338, Sep. 2000.
9. M. Futamoto, N. Inaba, Y. Hirayama, K. Ito, and Y. Honda, "Compositional microstructure and micromagnetics of Co-based thin film recording media," in Proc. Mat. Res. Soc. Symp., vol. 517, 1998, pp. 243-254.
10. M. R. Kim, S. Guruswamy, and K. E. Johnson, "Experimental observation of solute segregation in longitudinal CoPtCr/cr magnetic thin films," IEEE Trans. Magn., vol. 29, no. 6, pp. 3673-3675, Nov. 1993.
11. N. Inaba, T. Yamamoto, Y. Hosoe, and M. Futamoto, "Microstructural segregation in CoCrTa and CoCrPt longitudinal magnetic recording media," J. Magn. Magn. Mater., vol. 168, pp. 222-231, 1997.
12. J. E. Wittig, T. P. Nolan, C. A. Ross, M. E. Schabes, K. Tang, R. Sinclair, and J. Bentley, "Chromium segregation in CoCrTa/Cr and CoCrPt/Cr thin films for longitudinal recording media," IEEE Trans. Magn., vol. 34, no. 4, pp. 1564-1567, Jul. 1998.
13. W. Yang, "Determining co-alloy anisotropy constants via epitaxial unicrystal film," Ph.D. dissertation, Dept. Electr. Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, 2000.
14. R. T. DeHoff, Thermodynamics in Materials Science. New York: McGraw-Hill, Inc., 1993.
15. S. Jeong, "Structure and magnetic properties of polycrystalline fept and copt thin films for high density recording media," Ph.D. dissertation, Carnegie Mellon Univ., Pittsburgh, PA, 2002.
16. K. Sato and Y. Hirotsu, "Long-range order parameter of oriented Llo-FePt nanoparticles determined by elecron diffraction," Mater. Translations, vol. 44, no. 8, pp. 1518-1522, 2003.
17. R. A. Ristau, K. Barmak, L. H. Lewis, K. R. Coffey, and J. K. Howard, "On the relationship of high coercivity and L10 ordered phase in CoPt and FePt thin films," J.Appl. Phys., vol. 86, pp. 4527-4533, 1999.
18. S. Wang, S. S. Kang, D. E. Nikles, J. W. Harrell, and X. W. Wu, "Magnetic properties of self-organized L10 FePtAg nanoparticle arrays," J. Magn. Magn. Mater., vol. 266, pp. 49-56, 2003.
19. x nanoparticles," IEEE Trans. Magn., vol. 39, no. 5, pp. 2753-2757, Sep. 2003.
20. 1-xalloys," J. Appl. Phys., vol. 91 (10), pp. 8822-8824, May 2002.